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Journal articles on the topic 'Nickel sulfide New Zealand'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Zhang, Ya Hui, and Qing Wang. "The New Progress of Nickel Sulfide Synthesis." Advanced Materials Research 366 (October 2011): 318–21. http://dx.doi.org/10.4028/www.scientific.net/amr.366.318.

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Nickel sulfide has been the subject of considerable interest because of its potential applications in many fields. In this paper, the synthesis of nickel sulfide nanostructures is described. The Morphologies of as prepared nickel sulfide nanostructures are summarized. And the applications and prospects of nickel sulfide in this field also are analyzed.

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2

Barnes, Lachlan, Katrina Hall, Craig Blount, Madelaine Hooper, David van Senden, Andrew Costen, Chris Scraggs, David Provis, and Daniel Pygas. "Monitoring marine effects of produced formation water discharge in Bass Strait." APPEA Journal 59, no. 1 (2019): 1. http://dx.doi.org/10.1071/aj18226.

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Esso Australia Pty Ltd (Esso), in a joint venture with BHP Petroleum Pty Ltd, operates 23 oil and gas production platforms and subsea facilities off the Victorian coast near Gippsland, Australia. The underlying reservoirs have multi-darcy sands and a strong aquifer water drive, so in addition to oil and gas, the extraction activities result in substantial amounts of produced formation water (PFW). Following on-platform treatment, PFW containing a variety of hydrocarbons, ions and inorganics, such as calcium, ammonia, sulfate and trace metals, is discharged into the receiving environment. This paper reports on a study undertaken to investigate the potential effects of PFW discharges from two platforms (Tuna (TNA) and West Kingfish (WKF)) on the receiving environment. Four complementary sampling approaches were used to address the objectives of the study: (1) measure and estimate the dilution of Rhodamine FWT dye solution in the receiving environment following injection into the PFW discharge line, (2) collect and analyse undiluted PFW samples before discharge, (3) collect and analyse marine water samples from within the discharge plume and (4) collect and analyse sediment and benthic infauna samples at various distances away from platforms and at reference locations. Results indicate the rate of PFW dilution within the receiving environment is more rapid than predicted by existing numerical models and that the concentration of all analytes present in PFW were below Australian and New Zealand Environment Conservation Council (ANZECC) 2000 guideline trigger values for 80% protection; moreover, with one exception, analytes were not detected above background levels more than 59 m from the platform. With the exception of a few samples containing metals, specifically arsenic, copper, lead, zinc and nickel, concentrations of analytes in the majority of sediment samples collected were below the ANZECC 2000 and revised 2013 sediment quality guidelines. A diverse range of benthic infauna were sampled, with the abundance of a limited number of taxa influenced by distance from individual platforms. No substantial differences in abundances of benthic infauna were detected at distances greater than 1.3 km from TNA and 1.0 km from WKF, compared with reference locations. These results indicate that PFW discharges from TNA and WKF likely represent a low risk to the receiving environment.

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Bates, Michael N., Ian L. Bailey, Robert B. DiMartino, Karl Pope, Julian Crane, and Nick Garrett. "Lens Opacity and Hydrogen Sulfide in a New Zealand Geothermal Area." Optometry and Vision Science 94, no. 4 (April 2017): 487–95. http://dx.doi.org/10.1097/opx.0000000000001049.

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4

Yan, Caihong, Enshan Han, Yanzhen He, and Shun Lu. "Vanadium Doped Nickel Sulfide@ Nickel Foam Electrode for Hybrid Supercapacitors." ECS Meeting Abstracts MA2022-02, no. 7 (October 9, 2022): 2570. http://dx.doi.org/10.1149/ma2022-0272570mtgabs.

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Abstract With the depletion of energy sources, people are gradually deepening the development of new energy sources. However, energy storage devices are limiting the pace of the development of new energy sources.[1] Considering the potential of supercapacitors as a supplement or alternative to rechargeable batteries for fast energy harvesting and high power transfer has become a research focus recently. Hybrid supercapacitors (HSCs) can bridge the gap between supercapacitors and batteries. It is well known that the main components of HSC devices are anode and cathode. The anode mainly provides high electrochemical performance, while the cathode can supply a wide potential window and good stability.[2] The energy density calculation equation (E = 0.5 CV2 ) is known and deduced that can control the energy density of HSC by the operating voltage window (V) and specific capacitance (C). Obviously, constructing anode materials with high capacitance is one of the effective ways to achieve the high energy density of HSC. In addition, previous experimental results show that reasonable ion doping is beneficial to change the electronic structure of electrode materials and improving the energy storage performance of electrode materials.[3-5] One of the elements with more than one oxidation state can form two (or more) ions of different valence states under the action of a reducing agent, which will be called mixed-valence ions. Boosting the specific capacitance of the electrode, ions with mixed-valence states have higher charge storage capacity and more abundant redox reactions than most other transition metal ions. In this regard, vanadium has various stable oxidation states (+ 2, + 3, + 4, and + 5). In particular, its high oxidation states (+ 4 and + 5) can store charge in the positive potential range, thus providing a favorable pseudo-capacitance. Here, we chose Ni3S2 with high theoretical capacitance and prepared vanadium-doped nickel sulfide (V-Ni3S2, denoted as VNS) anode electrodes using vanadium ions as dopant ions (Figure 1). Using nickel foam as the nickel source, prepared the VNS electrode by a one-step hydrothermal method. Since the electrode is grown in situ on the surface of nickel foam, the electrode material can be employed as an electrode sheet directly after preparation without further fabrication. Figure 1. Schematic diagram of synthesis process of VNS electrode, and Electrochemical storage performance: (a) CV curves of the VNS and NS electrodes at 2 mV s-1 scan rate, (b) GCD curves of the VNS and NS electrodes at 1 A g-1, (c) GCD curves of VNS with different V doping amounts at 1 A g-1, (d) The Ragone plots, (e) Self-discharge of NS//AC device and VNS//AC device for five hours, and (f) Cycle performance of the VNS//AC hybrid supercapacitor with a voltage of 1.6 V at a current density of 2 A g-1. [6] The most direct effect of avoiding the use of binder and thus increasing the conductivity is that the specific capacitance of the prepared VNS electrodes is further enhanced (2072 F g− 1 at 1 A g− 1). In addition, the structure of the surface of the prepared VNS electrode material is nanoflower morphology. Integrating two-dimensional nanosheets into three-dimensional nanoflower morphologies increases the number of active sites while improving the structural stability (capacitance retention of 86.4% after 10,000 cycles, Figure 1a-f). Finally, using the VNS and activated carbon electrodes as anode and cathode to assemble the VNS//AC hybrid supercapacitors delivers an excellent energy density of 81.33 Wh kg− 1 at a power density of 160 W kg− 1. This simple preparation method and significantly enhanced performance of the electrode materials have far-reaching potential for application in HSC devices. References [1] C. Li et al. MOF-derived NiZnCo-P nano-array for asymmetric supercapacitor, Chem. Eng. J. 446 (2022) 137108. [2] K. Tao et al. Epitaxial grown self-supporting NiSe/Ni3S2/Ni12P5 vertical nanofiber arrays on Ni foam for high performance supercapacitor: Matched exposed facets and re-distribution of electron density, Nano Energy, 55 (2019) 65-81. [3] G. Li et al. One-pot synthesis of Cu-doped Ni3S2 nano-sheet/rod nanoarray for high performance supercapacitors, Chem. Eng. J. 388 (2020) 124319. [4] Y. Ruan et al. Al-doped β-NiS Mesoporous Nanoflowers for Hybrid-type Electrodes toward Enhanced Electrochemical Performance, Electrochim. Acta, 236 (2017) 307-318. [5] Y. Cheng et al. A novel electrode for supercapacitors: Spicules-like Ni3S2 shell grown on molybdenum nanoparticles doped nickel foam, Appl. Surf. Sci. 467-468 (2019) 1113-1121. [6] C. Yan et al. Hydrothermal synthesis of vanadium doped nickel sulfide nanoflower for high-performance supercapacitor, J. Alloy. Compd. (2022) 167189. Figure 1

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5

Kotok, Valerii, Vadym Kovalenko, Rovil Nafeev, and Olena Melnyk. "Investigation of the characteristics of sulfurized electrochromic Ni(OH)2-PVA films deposited on transparent substrates." Eastern-European Journal of Enterprise Technologies 1, no. 6(115) (February 28, 2022): 24–30. http://dx.doi.org/10.15587/1729-4061.2022.252634.

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Obtaining new types of composite coatings for various purposes is the most important direction in chemistry. The synthesis of composite hydroxide-sulfide compounds can be useful in various areas of applied electrochemistry. Using a simple two-step method, thin films composed of nickel hydroxide sulfide-polyvinyl alcohol were formed. The production of nickel hydroxide sulfide-polyvinyl alcohol composite was carried out by holding the nickel hydroxide-polyvinyl alcohol composite coating formed on the glass electrode with an electrically conductive substrate in a solution of 0.03 M Na2S for 10 minutes. The formation of nickel sulfide on the surface of nickel hydroxide was shown indirectly. It was shown that there were no changes in morphology after the treatment of the electrode in sodium sulfide solution. As a result of the treatment, the electrochemical and electrochromic characteristics changed. There was some deterioration in the average coloration depth from 55 % to 49 % for the electrode containing nickel sulfide. The electrochemical characteristics also deteriorated slightly after the formation of the sulfide film, namely, the specific capacitance, which went to the passage of anodic and cathodic processes. However, the capacitance efficiency increased from 83 % to 87 % for the sulfide-treated film. Despite this, this simple method is considered to be potentially promising for the formation of electrodes for use in other electrochemical devices. In addition, due to the treatment in a sodium sulfide solution, it became possible to roughly determine the size of the nickel hydroxide clusters in the nickel hydroxide-polyvinyl alcohol composite coating. These clusters did not exceed 430 nm in size, which was almost equal to the lower limit of the wavelength of the visible spectrum.

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6

Sathiyaraj, E., S. Thirumaran, Samuele Ciattini, and S. Selvanayagam. "Synthesis and characterization of Ni(II) complexes with functionalized dithiocarbamates: New single source precursors for nickel sulfide and nickel-iron sulfide nanoparticles." Inorganica Chimica Acta 498 (December 2019): 119162. http://dx.doi.org/10.1016/j.ica.2019.119162.

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7

Manin, Iaroslav. "New Zealand Subsoil Using Legal Regime." NB: Административное право и практика администрирования, no. 4 (April 2022): 1–27. http://dx.doi.org/10.7256/2306-9945.2022.4.38661.

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The object of the study is the relations of subsurface use in New Zealand, the subject is the legal regulation of the exploitation of New Zealand natural resources contained in the subsurface and on the seabed - in sulfide fields. The author examines in detail the state mechanism of environmental management, paying special attention to the role of local authorities and the indigenous Maori population in the procedure for granting the right to use mineral deposits, as well as the specifics of the search and production of hydrocarbons on the continental shelf, the legal regime of Antarctica, New Zealand subantarctic territories and water areas. The article examines the institution of ownership of land and subsoil, the permissive procedure for the use of natural objects. The relevance of the work is due to its practical significance and reflects domestic economic interests in Oceania. The scientific novelty of the article lies in the originality of the work containing fundamentally new information on the subject of research - the only one in Russia and one of the few published scientific works on New Zealand natural resource law in the world. The publication analyzes the laws in the current year's edition, it can be used for comparative jurisprudence, in the legislative process, for educational, scientific and other purposes, the article contains conclusions on the text and at the end of the study. The conclusion about the sovereignty of the British Crown over the exclusive economic zone and the continental shelf of New Zealand, the proclamation of the New Zealand sovereign as the owner of the natural resources of the relevant waters, contrary to the norms of international maritime law, is important for ensuring peace and global security. The experience of municipal and parliamentary control, specialized environmental justice of New Zealand can be used by the Russian Federation.

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8

Pitcairn, I. K., G. R. Olivo, D. A. H. Teagle, and D. Craw. "SULFIDE EVOLUTION DURING PROGRADE METAMORPHISM OF THE OTAGO AND ALPINE SCHISTS, NEW ZEALAND." Canadian Mineralogist 48, no. 5 (October 1, 2010): 1267–95. http://dx.doi.org/10.3749/canmin.48.5.1267.

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9

Serdyukov, S. I., M. I. Kniazeva, I. A. Sizova, Y. V. Zubavichus, P. V. Dorovatovskii, and A. L. Maximov. "A new precursor for synthesis of nickel-tungsten sulfide aromatic hydrogenation catalyst." Molecular Catalysis 502 (February 2021): 111357. http://dx.doi.org/10.1016/j.mcat.2020.111357.

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10

Chemyshev, N. M. "A NEW TYPE OF NICKEL SULFIDE MINERALIZATION IN THE VORONEZH CRYSTALLINE MASSIF." International Geology Review 27, no. 7 (July 1985): 859–69. http://dx.doi.org/10.1080/00206818509466472.

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11

Gahtar, A., S. Benramache, C. Zaouche, A. Boukacham, and A. Sayah. "Effect of Temperature on the Properties of Nickel Sulfide Films Performed by Spray Pyrolysis Technique." Advances in Materials Science 20, no. 3 (September 1, 2020): 36–51. http://dx.doi.org/10.2478/adms-2020-0015.

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AbstractIn this work, we have prepared new materials of the nickel sulfide thin films by using the spray pyrolysis technique for promising co-catalyst to improve the photocatalytic performance or superconductivity. The effect of deposition temperature (523, 573 and 623 K) on structural, optical and electrical properties was investigated. The XRD diffraction shows that the prepared nickel sulfide at 523, 573 and 623 K having an orthorhombic, hexagonal and hexagonal structure, which were Ni3S2, Ni17S18 and NiS2, respectively. The minimum value of crystallite size (45,9 nm) was measured of deposited film at 573K. The thin films prepared at 523 and 573 K have an average transmittance is about 20 %. The prepared Ni1S2 thin film at T=623 K has the lowest calculated optical band gap and Urbach energy. The Ni1S2 thin film also has the best calculated of the refractive index and the extinction coefficient. The FTIR spectrums of the nickel sulfide have various bands such as Ni-S, C-H, O-H, N–H and C-S. The maximum electrical conductivity is 4,29x105 (Ω.cm)−1 was obtained at 573K of the Ni17S18. The nickel sulfide thin films sprayed at 573K have good structural, optical and electrical properties.

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12

Boschen, RE, AA Rowden, MR Clark, SJ Barton, A. Pallentin, and JPA Gardner. "Megabenthic assemblage structure on three New Zealand seamounts: implications for seafloor massive sulfide mining." Marine Ecology Progress Series 523 (March 16, 2015): 1–14. http://dx.doi.org/10.3354/meps11239.

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13

Siegel, S. M., Pauline Penny, B. Z. Siegel, and David Penny. "Atmospheric hydrogen sulfide levels at the sulphur bay wildlife area, Lake Rotorua, New Zealand." Water, Air, and Soil Pollution 28, no. 3-4 (April 1986): 385–91. http://dx.doi.org/10.1007/bf00583502.

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14

Mohamed, Doha S., and Khlaed M. Lotfy. "Biocompatibility of nickel titanium versus nitrided nickel titanium in bone and bone marrow of male New Zealand rabbits." Egyptian Journal of Histology 38, no. 3 (September 2015): 629–36. http://dx.doi.org/10.1097/01.ehx.0000470823.75469.71.

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15

Osakada, Kohtaro, Atushi Taniguchi, Etsuo Kubota, Somanath Dev, Kuniaki Tanaka, Kenji Kubota, and Takakazu Yamamoto. "New organosols of copper(II) sulfide, cadmium sulfide, zinc sulfide, mercury(II) sulfide, nickel(II) sulfide and mixed metal sulfides in N,N-dimethylformamide and dimethyl sulfoxide. Preparation, characterization, and physical properties." Chemistry of Materials 4, no. 3 (May 1992): 562–70. http://dx.doi.org/10.1021/cm00021a014.

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16

Urosevic, Milovan, Ganesh Bhat, and Marcos Hexsel Grochau. "Targeting nickel sulfide deposits from 3D seismicreflection data at Kambalda, Australia." GEOPHYSICS 77, no. 5 (September 1, 2012): WC123—WC132. http://dx.doi.org/10.1190/geo2011-0514.1.

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The greenstone belts of the Yilgarn Craton, Western Australia, host numerous Archaean gold, nickel, and iron ore deposits. These deposits typically are found in complex geologic structures hidden by a deep, heterogeneous, and often conductive regolith profile. This added complexity limits the depth of penetration for the potential field methods, but at the same time opens new revenue possibilities through the application of seismic methods. To explore this opportunity, we acquired high-resolution, experimental, 3D seismic data over Lake Lefroy in Kambalda, Western Australia. The main objective was to map exceptionally complex, deep structures associated with Kambalda dome. Survey design used 3D ray tracing to improve the distribution of the common reflection points across ultramafic-basalt contacts which host numerous small, high-grade nickel sulfide deposits. A combination of small explosive sources, high-shot/receiver density, and exceptionally good coupling over the ultrasalty lake surface produced seismic data of very high quality. Processing focused on computation of accurate static and dynamic corrections, whereas imaging was helped by the existing geologic model. Advanced volumetric interpretation supported by seismic forward modeling was used to guide mapping of the main lithological interfaces and structures. Forward modeling was carried out using rock properties obtained from ultrasonic measurements and one borehole, drilled in the proximity of the 3D seismic volume. Using this information, geometric constraints based on the typical size of ore bodies found in this mine and a simple window-based seismic attribute, several new targets were proposed. Three of these targets subsequently have been drilled and new zones of mineralization were intercepted. The case study presented demonstrates that high-quality, high-resolution, 3D seismic data combined with volumetric seismic interpretation could become a primary methodology for exploration of deep, small, massive sulfide deposits distributed across the Kambalda area.

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Sunshine, Steven A., and James A. Ibers. "Structure and physical properties of the new layered ternary chalcogenides tantalum nickel sulfide (Ta2NiS5) and tantalum nickel selenide (Ta2NiSe5)." Inorganic Chemistry 24, no. 22 (October 1985): 3611–14. http://dx.doi.org/10.1021/ic00216a027.

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18

Wilson, Peter S., and Kay Vopel. "Assessing the Sulfide Footprint of Mussel Farms with Sediment Profile Imagery: A New Zealand Trial." PLOS ONE 10, no. 6 (June 17, 2015): e0129894. http://dx.doi.org/10.1371/journal.pone.0129894.

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19

Ikehata, K., S. Arai, and K. Notsu. "Geochemistry and origin of sulfide minerals in peridotite xenoliths from the North Island, New Zealand." Geochimica et Cosmochimica Acta 70, no. 18 (August 2006): A276. http://dx.doi.org/10.1016/j.gca.2006.06.559.

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20

Denholme, Saleem J., Jamie B. Gallagher, Phillip S. Dobson, John M. R. Weaver, and Duncan H. Gregory. "New Surface-Directed Vapour Transport Methods for the Controlled Growth of Nickel Sulfide Nanomaterials." Israel Journal of Chemistry 50, no. 4 (October 2010): 515–23. http://dx.doi.org/10.1002/ijch.201000061.

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21

Brathwaite, Robert L., and Kevin Faure. "The Waihi Epithermal Gold-Silver-Base Metal Sulfide-Quartz Vein System, New Zealand: Temperature and Salinity Controls on Electrum and Sulfide Deposition." Economic Geology 97, no. 2 (March 2002): 269–90. http://dx.doi.org/10.2113/gsecongeo.97.2.269.

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22

Heift, Dominikus. "Iron Sulfide Materials: Catalysts for Electrochemical Hydrogen Evolution." Inorganics 7, no. 6 (June 19, 2019): 75. http://dx.doi.org/10.3390/inorganics7060075.

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The chemical challenge of economically splitting water into molecular hydrogen and oxygen requires continuous development of more efficient, less-toxic, and cheaper catalyst materials. This review article highlights the potential of iron sulfide-based nanomaterials as electrocatalysts for water-splitting and predominantly as catalysts for the hydrogen evolution reaction (HER). Besides new synthetic techniques leading to phase-pure iron sulfide nano objects and thin-films, the article reviews three new material classes: (a) FeS2-TiO2 hybrid structures; (b) iron sulfide-2D carbon support composites; and (c) metal-doped (e.g., cobalt and nickel) iron sulfide materials. In recent years, immense progress has been made in the development of these materials, which exhibit enormous potential as hydrogen evolution catalysts and may represent a genuine alternative to more traditional, noble metal-based catalysts. First developments in this comparably new research area are summarized in this article and discussed together with theoretical studies on hydrogen evolution reactions involving iron sulfide electrocatalysts.

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23

Robinson, B. H., R. R. Brooks, and M. J. Hedley. "Cobalt and nickel accumulation inNyssa(tupelo) species and its significance for New Zealand agriculture." New Zealand Journal of Agricultural Research 42, no. 3 (January 1999): 235–40. http://dx.doi.org/10.1080/00288233.1999.9513374.

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24

Morris, M. C., L. Morrison, M. A. Joyce, and B. Rabel. "Trapping sheep blowflies with lures based on bacterial cultures." Australian Journal of Experimental Agriculture 38, no. 2 (1998): 125. http://dx.doi.org/10.1071/ea97088.

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Summary. Baits of Proteus mirabilis cultured in a commercial medium or in a gut mucus mixture were tested in New Zealand sheep pasture for their ability to trap sheep strike flies. Liver–sodium sulfide baits were used for comparison. At the start of the flystrike season, medium cultures were as effective as liver–sodium sulfide baits in trapping flies. As the season progressed, the liver–sodium sulfide mixture trapped a significantly higher number of Lucilia cuprina and Calliphora stygia than medium cultures, though they trapped significantly fewer Chrysomya rufifacies. In one case the medium culture trapped a significantly higher proportion of gravid L. cuprina than the liver–sodium sulfide mixture. Adding dimethyl sulfoxide to the medium culture significantly reduced its efficacy. The gut mucus culture was significantly less effective than the liver–sodium sulfide bait in trapping gravid L. cuprina, and significantly more effective in trapping Chrysomya rufifacies. This is the first published record of sheep strike flies being attracted by bacterial odours in the field.

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25

Denholme, Saleem J., Jamie B. Gallagher, Phillip S. Dobson, John M. R. Weaver, and Duncan H. Gregory. "Corrigendum: New Surface-Directed Vapour Transport Methods for the Controlled Growth of Nickel Sulfide Nanomaterials." Israel Journal of Chemistry 51, no. 1 (January 2011): 6. http://dx.doi.org/10.1002/ijch.201190002.

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Lizotte, Martine, Maurice Levasseur, Cliff S. Law, Carolyn F. Walker, Karl A. Safi, Andrew Marriner, and Ronald P. Kiene. "Dimethylsulfoniopropionate (DMSP) and dimethyl sulfide (DMS) cycling across contrasting biological hotspots of the New Zealand subtropical front." Ocean Science 13, no. 6 (November 23, 2017): 961–82. http://dx.doi.org/10.5194/os-13-961-2017.

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Abstract. The oceanic frontal region above the Chatham Rise east of New Zealand was investigated during the late austral summer season in February and March 2012. Despite its potential importance as a source of marine-originating and climate-relevant compounds, such as dimethyl sulfide (DMS) and its algal precursor dimethylsulfoniopropionate (DMSP), little is known of the processes fuelling the reservoirs of these sulfur (S) compounds in the water masses bordering the subtropical front (STF). This study focused on two opposing short-term fates of DMSP-S following its uptake by microbial organisms (either its conversion into DMS or its assimilation into bacterial biomass) and has not considered dissolved non-volatile degradation products. Sampling took place in three phytoplankton blooms (B1, B2, and B3) with B1 and B3 occurring in relatively nitrate-rich, dinoflagellate-dominated subantarctic waters, and B2 occurring in nitrate-poor subtropical waters dominated by coccolithophores. Concentrations of total DMSP (DMSPt) and DMS were high across the region, up to 160 and 14.5 nmol L−1, respectively. Pools of DMSPt showed a strong association with overall phytoplankton biomass proxied by chlorophyll a (rs = 0.83) likely because of the persistent dominance of dinoflagellates and coccolithophores, both DMSP-rich taxa. Heterotrophic microbes displayed low S assimilation from DMSP (less than 5 %) likely because their S requirements were fulfilled by high DMSP availability. Rates of bacterial protein synthesis were significantly correlated with concentrations of dissolved DMSP (DMSPd, rs = 0.86) as well as with the microbial conversion efficiency of DMSPd into DMS (DMS yield, rs = 0.84). Estimates of the potential contribution of microbially mediated rates of DMS production (0.1–27 nmol L−1 day−1) to the near-surface concentrations of DMS suggest that bacteria alone could not have sustained DMS pools at most stations, indicating an important role for phytoplankton-mediated DMS production. The findings from this study provide crucial information on the distribution and cycling of DMS and DMSP in a critically under-sampled area of the global ocean, and they highlight the importance of oceanic fronts as hotspots of the production of marine biogenic S compounds.

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Lee, Robert James, Jithendra Ratnayake, Arthi Veerasamy, Carolina Loch, Peter Cathro, and Paul A. Brunton. "Demographics, Practising Arrangements, and Standards: Survey among New Zealand Dentists." International Journal of Dentistry 2018 (November 18, 2018): 1–8. http://dx.doi.org/10.1155/2018/7675917.

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Background. To determine the demographic profile and practising arrangements of general dentists in New Zealand.Methods. A questionnaire comprising 19 sections with 125 questions was distributed via mail to 351 general dentists in New Zealand who were selected, at random, from the Dental Council of New Zealand’s 2016 register.Results. Two hundred and four questionnaires were returned, of which 188 were usable giving a response rate of 53.5%. The majority of the respondents (63.5%) were male and practice principals (56.8%). Fifty-nine percent of the practices were located in city or town centres with a wide geographic distribution. Sole practitioners accounted for 24.1% of respondents, with the mean number of dentists per practice being 3.2. The majority of respondents (71.6%) attended five or more continuing professional development courses in the past year. Ninety-one percent of respondents used a computerized management system, and 95.3% used the Internet. The use of nickel-titanium endodontic files (83.9%) and digital imaging (82.2%) was the most frequently cited clinical innovations. Articaine was the most popular local anaesthetic of choice.Conclusions. Dentistry is an ever-changing profession, with evidence that NZ dentists continue to develop, learn, and embrace advancements in technologies to supply high-quality evidence-based treatment.

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Chareev, D. A., A. V. Kurnosov, L. S. Dubrovinsky, O. V. Narygina, P. G. Gavrilenko, E. Yu Zarechnaya, N. A. Dubrovinskaya, Yu A. Litvin, and E. G. Osadchii. "New synthetic high-density nickel sulfide: A plausible component of the Earth’s core and terrestrial planets." Doklady Earth Sciences 432, no. 2 (June 2010): 771–74. http://dx.doi.org/10.1134/s1028334x10060139.

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Yamamoto, T., A. Taniguchi, S. Dev, E. Kubota, K. Osakada, and K. Kubota. "New organosols of nickel sulfides, palladium sulfides, manganese sulfide, and mixed metal sulfides and their use in preparation of semiconducting polymer-metal sulfide composites." Colloid & Polymer Science 269, no. 10 (October 1991): 969–71. http://dx.doi.org/10.1007/bf00657425.

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30

Peters, Adam, Graham Merrington, Jenny Stauber, Lisa Golding, Graeme Batley, Francesca Gissi, Merrin Adams, et al. "Empirical Bioavailability Corrections for Nickel in Freshwaters for Australia and New Zealand Water Quality Guideline Development." Environmental Toxicology and Chemistry 40, no. 1 (November 17, 2020): 113–26. http://dx.doi.org/10.1002/etc.4900.

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31

Mandon, Celine L., Bruce W. Christenson, Terry M. Seward, and C. Ian Schipper. "Magma mixing, degassing and late sulfide saturation: Insights into the 1976–2000 eruptive sequence at White Island, New Zealand." Journal of Volcanology and Geothermal Research 417 (September 2021): 107299. http://dx.doi.org/10.1016/j.jvolgeores.2021.107299.

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Saint-Macary, Alexia D., Neill Barr, Evelyn Armstrong, Karl Safi, Andrew Marriner, Mark Gall, Kiri McComb, Peter W. Dillingham, and Cliff S. Law. "The Influence of Ocean Acidification and Warming on DMSP & DMS in New Zealand Coastal Water." Atmosphere 12, no. 2 (January 29, 2021): 181. http://dx.doi.org/10.3390/atmos12020181.

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The cycling of the trace gas dimethyl sulfide (DMS) and its precursor dimethylsulfoniopropionate (DMSP) may be affected by future ocean acidification and warming. DMSP and DMS concentrations were monitored over 20-days in four mesocosm experiments in which the temperature and pH of coastal water were manipulated to projected values for the year 2100 and 2150. This had no effect on DMSP in the two-initial nutrient-depleted experiments; however, in the two nutrient-amended experiments, warmer temperature combined with lower pH had a more significant effect on DMSP & DMS concentrations than lower pH alone. Overall, this indicates that future warming may have greater influence on DMS production than ocean acidification. The observed reduction in DMSP at warmer temperatures was associated with changes in phytoplankton community and in particular with small flagellate biomass. A small decrease in DMS concentration was measured in the treatments relative to other studies, from −2% in the nutrient-amended low pH treatment to −16% in the year 2150 pH and temperature conditions. Temporal variation was also observed with DMS concentration increasing earlier in the higher temperature treatment. Nutrient availability and community composition should be considered in models of future DMS.

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33

Habashi, F. "Recent trends in extractive metallurgy." Journal of Mining and Metallurgy, Section B: Metallurgy 45, no. 1 (2009): 1–13. http://dx.doi.org/10.2298/jmmb0901001h.

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While pyrometallurgical processes are old technology and were the dominant and logical route used to treat sulfide concentrates they are now challenged by new hydrometallurgical processes. In these new processes there have been attempts in the past few years to avoid using autoclaves in the treatment of concentrates of zinc, copper, and nickel. The situation has been recently reversed and pressure hydrometallurgy is being applied in many operations. An outline of these processes is given and the future trend is discussed.

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34

Stauber, Jenny, Lisa Golding, Adam Peters, Graham Merrington, Merrin Adams, Monique Binet, Graeme Batley, et al. "Application of Bioavailability Models to Derive Chronic Guideline Values for Nickel in Freshwaters of Australia and New Zealand." Environmental Toxicology and Chemistry 40, no. 1 (November 17, 2020): 100–112. http://dx.doi.org/10.1002/etc.4885.

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35

Potapenko, Ksenia O., Evgeny Yu Gerasimov, Svetlana V. Cherepanova, Andrey A. Saraev, and Ekaterina A. Kozlova. "Efficient Photocatalytic Hydrogen Production over NiS-Modified Cadmium and Manganese Sulfide Solid Solutions." Materials 15, no. 22 (November 14, 2022): 8026. http://dx.doi.org/10.3390/ma15228026.

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In this work, new photocatalysts based on Cd1−xMnxS sulfide solid solutions were synthesized by varying the fraction of MnS (x = 0.4, 0.6, and 0.8) and the hydrothermal treatment temperature (T = 100, 120, 140, and 160 °C). The active samples were modified with Pt and NiS co-catalysts. Characterization was performed using various methods, including XRD, XPS, HR TEM, and UV-vis spectroscopy. The photocatalytic activity was tested in hydrogen evolution from aqueous solutions of Na2S/Na2SO3 and glucose under visible light (425 nm). When studying the process of hydrogen evolution using an equimolar mixture of Na2S/Na2SO3 as a sacrificial agent, the photocatalysts Cd0.5Mn0.5S/Mn(OH)2 (T = 120 °C) and Cd0.4Mn0.6S (T = 160 °C) demonstrated the highest activity among the non-modified solid solutions. The deposition of NiS co-catalyst led to a significant increase in activity. The best activity in the case of the modified samples was shown by 0.5 wt.% NiS/Cd0.5Mn0.5S (T = 120 °C) at the extraordinary level of 34.2 mmol g−1 h−1 (AQE 14.4%) for the Na2S/Na2SO3 solution and 4.6 mmol g−1 h−1 (AQE 2.9%) for the glucose solution. The nickel-containing samples possessed a high stability in solutions of both sodium sulfide/sulfite and glucose. Thus, nickel sulfide is considered an alternative to depositing precious metals, which is attractive from an economic point of view. It worth noting that the process of photocatalytic hydrogen evolution from sugar solutions by adding samples based on Cd1−xMnxS has not been studied before.

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36

Barker, Shaun L. L., Jonathan P. Kim, Dave Craw, Russell D. Frew, and Keith A. Hunter. "Processes affecting the chemical composition of Blue Lake, an alluvial gold-mine pit lake in New Zealand." Marine and Freshwater Research 55, no. 2 (2004): 201. http://dx.doi.org/10.1071/mf03174.

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Blue Lake is an abandoned, water-filled alluvial gold-mine pit in Central Otago, New Zealand. Alluvial gold mining is generally considered to be chemically benign, unless mercury is added to assist gold separation. The major element, trace metal and isotopic composition of the pit lake was compared to nearby, unaffected streams. Blue Lake was found to be enriched in the major cations, with levels that were 2–5 times higher than in unaffected streams. Furthermore, Cu, Ni and Zn concentrations exceeded 10 nmol L–1 in Blue Lake; these levels were 2–30 times higher than those in nearby, unaffected streams. Processes affecting the lake’s characteristics include evaporative concentration, and the oxidation and dissolution of locally derived sulfide and sulfate minerals. Localised acidification in surface and ground waters around the lake leads to the mobilisation of Zn and Ni, resulting in lake waters being strongly enriched in these trace metals (concentrations greater than 40 nmol L–1), whereas surrounding stream waters have much lower Ni and Zn concentrations (less than 5 nmol L–1). Ongoing evaporative concentration, and the continuing mobilisation of trace metals, implies that metal enrichment in lake waters will continue to occur. The present study demonstrated that the ‘benign’ process of alluvial gold mining can have significant chemical consequences in resulting water bodies.

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37

Bates, Michael N., Julian Crane, John R. Balmes, and Nick Garrett. "Investigation of Hydrogen Sulfide Exposure and Lung Function, Asthma and Chronic Obstructive Pulmonary Disease in a Geothermal Area of New Zealand." PLOS ONE 10, no. 3 (March 30, 2015): e0122062. http://dx.doi.org/10.1371/journal.pone.0122062.

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38

Brathwaite, R. L., R. J. Sewell, and A. B. Christie. "Nature and tectonic setting of massive sulfide mineralisation and associated sediments and volcanics in the Matakaoa Volcanics, Raukumara Peninsula, New Zealand." New Zealand Journal of Geology and Geophysics 51, no. 4 (December 2008): 349–66. http://dx.doi.org/10.1080/00288300809509870.

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39

Hewlett, L., D. Craw, and A. Black. "Comparison of arsenic and trace metal contents of discharges from adjacent coal and gold mines, Reefton, New Zealand." Marine and Freshwater Research 56, no. 7 (2005): 983. http://dx.doi.org/10.1071/mf05018.

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Historic gold and coal mines in the same catchment near Reefton, New Zealand allow comparison of environmental effects of the different mines in the same climate and topography. Gold mine discharge waters (neutral pH) deposit hydrated iron oxide (HFO) abundantly at mine entrances, whereas coal mine discharge waters (low pH) precipitate HFO tens to hundreds of metres downstream as pH rises. Waters leaving historic mines have up to 59 mg L−1 dissolved arsenic, and HFO at gold mines has up to 20 wt% arsenic. Coal mine discharge waters have low dissolved arsenic (typically near 0.01 mg L−1) and HFO has <0.2 wt% arsenic. Minor dissolved Cu, Cr, Ni, and Zn are being leached from background host rocks by acid solutions during sulfide oxidation, and attenuated by HFO downstream of both gold and coal mines. A net flux of 30 mg s−1 arsenic is leaving the catchment, and nearly all of this arsenic flux is from the gold mining area, but >90% of that flux is from background sources. The present study demonstrates that elevated trace metal concentrations around mines in a wet climate are principally from non-anthropogenic sources and are readily attenuated by natural processes.

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40

Deutscher, N. M., N. B. Jones, D. W. T. Griffith, S. W. Wood, and F. J. Murcray. "Atmospheric carbonyl sulfide (OCS) variation from 1992–2004 by ground-based solar FTIR spectrometry." Atmospheric Chemistry and Physics Discussions 6, no. 2 (March 2, 2006): 1619–36. http://dx.doi.org/10.5194/acpd-6-1619-2006.

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Abstract. Analysis of ground-based high-resolution solar FTIR absorption spectra from four sites was performed to determine trends and variability in OCS columns over the period 1992–2004. The sites were Wollongong, Australia (34.45° S, 150.88° E), Lauder, New Zealand (45.0° S, 169.7° E), Arrival Heights, Antarctica (77.8° S, 166.6° E) and Mauna Loa, Hawaii (19.5° N, 155.6° W). Small but significant long-term trends of −0.18±0.02% yr-1 above Hawaii, −0.30±0.12% yr-1 above Wollongong and −0.29±0.14% yr-1 above Lauder, were seen. No significant trend was seen above Arrival Heights. A large peak-to-peak seasonal difference observed in 1996–1997 above Wollongong and reported earlier was confirmed, but not repeated in later years. This seasonal feature correlated with particularly high water vapour columns present during late summer and early autumn, and suggests a link to warm oceanic airmasses. Seasonal variation of approximately 6% per year is observed in the total column in other years for all four locations.

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41

Anil Kumar, Yedluri, Anuja A. Yadav, Bandar Ali Al-Asbahi, Seok-Won Kang, and Md Moniruzzaman. "Sulfur Nanoparticle-Decorated Nickel Cobalt Sulfide Hetero-Nanostructures with Enhanced Energy Storage for High-Performance Supercapacitors." Molecules 27, no. 21 (November 2, 2022): 7458. http://dx.doi.org/10.3390/molecules27217458.

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Transition-metal sulfides exaggerate higher theoretical capacities and were considered a type of prospective nanomaterials for energy storage; their inherent weaker conductivities and lower electrochemical active sites limited the commercial applications of the electrodes. The sheet-like nickel cobalt sulfide nanoparticles with richer sulfur vacancies were fabricated by a two-step hydrothermal technique. The sheet-like nanoparticles self-combination by ultrathin nanoparticles brought active electrodes entirely contacted with the electrolytes, benefiting ion diffusion and charges/discharges. Nevertheless, defect engineers of sulfur vacancy at the atomic level raise the intrinsic conductivities and improve the active sites for energy storage functions. As a result, the gained sulfur-deficient NiCo2S4 nanosheets consist of good specific capacitances of 971 F g−1 at 2 A g−1 and an excellent cycle span, retaining 88.7% of the initial capacitance over 3500 cyclings. Moreover, the values of capacitance results exhibited that the fulfilling characteristic of the sample was a combination of the hydrothermal procedure and the surface capacitances behavior. This novel investigation proposes a new perspective to importantly improve the electrochemical performances of the electrode by the absolute engineering of defects and morphologies in the supercapacitor field.

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42

Zhao, Kaile, Guohua Gu, Changliang Wang, Xiying Rao, Xiaohui Wang, and Xiaxu Xiong. "The effect of a new polysaccharide on the depression of talc and the flotation of a nickel–copper sulfide ore." Minerals Engineering 77 (June 2015): 99–106. http://dx.doi.org/10.1016/j.mineng.2015.02.014.

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43

Singh, Satya Pal, Archana Kumari Singh, and Priya Yadav. "SYNTHESIS AND CHARACTERIZATION OF STRUCTURAL AND OPTICAL PROPERTIES OF NI-DOPED ZINC SULFIDE NANOPARTICLES." Journal of Advanced Scientific Research 13, no. 04 (May 31, 2022): 87–93. http://dx.doi.org/10.55218/jasr.202213416.

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The band-gaps of wide band gap metal sulfide semiconductors such as ZnS, are significantly reduced when doped with transition metal ions Ni2+.The new composite materials offer promising and versatile applications in spintronic devices, solar cells and other optoelectronic devices, and in photonics etc. It has led to substantial modifications in methods of synthesis for ZnS nanoparticles. In this research work, we have synthesized ZnS nanoparticles via simple chemical precipitation method. ZnS nanoparticles have been characterized using UV-visible spectra and Raman spectroscopy. For morphological studies we have used scanning electron microscopy (SEM). The optical band gap has been evaluated from UV-vis-nir absorption spectrum of the particles. Raman spectroscopy is used to study the rotational, vibrational and other modes of the sample, as we are interested to reveal properties of nanoclusters treating as those as nano-molecules. We correlate the variations in properties with their structures. Our investigations confirm formation of large single crystals (nanomolecules) yielding resonant Raman peaks. It is further confirmed from SEM images of the samples. Nanoparticles have special properties other than bulk. Their surface energy contributions are entirely different from their bulk counterparts and play dominant role in its stability. Thus, we assign a special phase for them as “Nanophase”. The phenomenon of nano-cluster (aggregates) formation of nickel atoms via nucleation is also confirmed for high doping concentrations of nickel, which results into inverse trend for band-gap.

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44

Ebel, D. S., and A. J. Naldrett. "Crystallization of sulfide liquids and the interpretation of ore composition." Canadian Journal of Earth Sciences 34, no. 4 (April 1, 1997): 352–65. http://dx.doi.org/10.1139/e17-031.

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We have been exploring ways to quantitatively assess the extent to which fractionation of sulfide melt has effected variations in composition within magmatic sulfide ore bodies. Our approach has been to determine by experiment the crystallization paths of sulfide liquids in temperature and composition dimensions. In this paper, the results of new major-element partitioning experiments below 1050 °C in the nickel-free system are presented and summarized along with new and previous work in the Fe–Ni–Cu–S quaternary. The partition coefficients D for Cu between monosulfid solid solution (mss) and sulfide liquid in the Ni-free system (DCu = (wt.% Cu in mss)/(wt.% Cu in liquid)) cluster near 0.3, but decrease to nearly 0.1 for Cu-rich, S-poor liquids near 1000 °C. DNi also declines with decreasing sulfur content of the liquid, but increases with decreasing temperature. Preliminary data indicate that DNi exceeds 1.0 in low-Ni liquids with greater than 16 wt.% Cu, at 1050 °C. The quality of available data on the Fe–Ni–Cu–S system currently exceeds the sensitivity of crystallization models based on the distribution coefficient approximation for major elements. However, we present equations for variable distribution coefficients for Ni and Cu that can be incorporated into calculations of the ratio of trapped initial liquid to fractionated solid for bulk ore samples, using D values for platinum group elements from the literature. Fractionation can then be modeled quite well using an iterative approach, with D values changing in response to liquid composition with each increment of crystallization along an assumed temperature path.

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45

Pearson, Andrew J., and Ellen Ashmore. "Risk assessment of antimony, barium, beryllium, boron, bromine, lithium, nickel, strontium, thallium and uranium concentrations in the New Zealand diet." Food Additives & Contaminants: Part A 37, no. 3 (December 27, 2019): 451–64. http://dx.doi.org/10.1080/19440049.2019.1704445.

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46

Hattula, Aimo, and Timo Rekola. "Exploration geophysics at the Pyhäsalmi mine and grade control work of the Outokumpu Group." GEOPHYSICS 65, no. 6 (November 2000): 1961–69. http://dx.doi.org/10.1190/1.1444879.

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The power of geophysics is often realized while surveying barren exploration holes. Integrated interpretation of borehole electromagnetic (EM) and lithogeochemical data led to the discovery of a new volcanogenic massive sulfide (VMS) ore deposit at 500 m depth in the Pyhäsalmi area, which belongs to the Main Sulfide ore belt in Finland. In the deep exploration program, wide‐band multifrequency EM ground surveys were successfully used to detect both new ore lenses and geological structures. Mise‐a‐la‐masse (MAM) borehole and ground surveys as well as borehole EM surveys were effectively used to correlate intersections between drill holes and to locate new orebodies. The latest modeling of MAM data resulted in an exploration target at 700 m depth. The use of geophysics for exploration has been extended to mine production at Outokumpu. Geophysical logging detects ore‐waste boundaries, reduces expensive core drilling, and obtains physical property information quickly on ore intersections. Depending on ore type, geophysical borehole logging can also be applied to classify mineralization, interpret lithology, and sometimes to transform physical responses to metal grades in ore. At the Pyhäsalmi zinc‐copper‐sulfur mine, density logging in percussion boreholes is used to locate mineable ore boundaries and to classify drillhole intersections as massive or semimassive sulfide ore types. Pyrrhotite‐bearing zones are separated from other sulfides by inductive conductivity logs. The use of geophysical logging for grade estimation and control has been most effective in the nickel mines at Enonkoski, Finland, and Namew Lake, Canada (using conductivity logs), and in the Kemi chromium mine, Finland (using gamma‐gamma density logs).

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47

Al-Qahtani, Salhah D. "Solution and Solid State Study of Nickel(II) Ternary Complexes Containing 5-Aminolevulinic Acid Drug and Amino Acids." Asian Journal of Chemistry 32, no. 7 (2020): 1563–68. http://dx.doi.org/10.14233/ajchem.2020.22658.

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Solution equilibria of the systems Ni(II)-5-aminolevulinic acid as ligand (A) and the amino acids [alanine (Ala), valine (Val), methylamine (Met), imidazole (Imi), Histidine (His), serine (Ser), cysteine (Cys) and penicillamine (Pen)] as ligands (L) have been studied pH-metrically. The stability constants of mixed ligand complexes were calculated with I = 0.10 mol L-1 KNO3 using HYPERQUAD program at 25 ± 0.1 ºC. The log10 X values showed a higher stabilities for the mixed ligand complexes compared to the binary analogues. The synthesis and characterization of the new amino acid mononuclear Ni(II) binary complex [NiA] (1) and ternary complex [NiAL] (2) were achieved via molar conductance, elemental analysis UV-vis, IR, 1H NMR, thermal analysis and magnetic moment. The thermogravimetric analysis of complexes were investigated by TG-DTA suggests that the complexes possess high thermal stability formation and their respective nickel oxide for 1 and nickel sulfide for 2 as final chemical entities, which are thermally stable. The nickel(II) chelates were found to be non-electrolytes, diamagnetic moments and the geometry around Ni(II) ion in complexes 1 and 2 is square planar

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48

Zitoun, R., S. D. Connell, C. E. Cornwall, K. I. Currie, K. Fabricius, L. J. Hoffmann, M. D. Lamare, et al. "A unique temperate rocky coastal hydrothermal vent system (Whakaari–White Island, Bay of Plenty, New Zealand): constraints for ocean acidification studies." Marine and Freshwater Research 71, no. 3 (2020): 321. http://dx.doi.org/10.1071/mf19167.

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In situ effects of ocean acidification are increasingly studied at submarine CO2 vents. Here we present a preliminary investigation into the water chemistry and biology of cool temperate CO2 vents near Whakaari–White Island, New Zealand. Water samples were collected inside three vent shafts, within vents at a distance of 2m from the shaft and at control sites. Vent samples contained both seawater pH on the total scale (pHT) and carbonate saturation states that were severely reduced, creating conditions as predicted for beyond the year 2100. Vent samples showed lower salinities, higher temperatures and greater nutrient concentrations. Sulfide levels were elevated and mercury levels were at concentrations considered toxic at all vent and control sites, but stable organic and inorganic ligands were present, as deduced from Cu speciation data, potentially mediating harmful effects on local organisms. The biological investigations focused on phytoplankton, zooplankton and macroalgae. Interestingly, we found lower abundances but higher diversity of phytoplankton and zooplankton at sites in the direct vicinity of Whakaari. Follow-up studies will need a combination of methods and approaches to attribute observations to specific drivers. The Whakaari vents represent a unique ecosystem with considerable biogeochemical complexity, which, like many other vent systems globally, require care in their use as a model of ‘future oceans’.

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49

Liu, Yu, Chun Hai Yi, Jia Yang Hu, and Bo Lun Yang. "Gasoline Desulfurization with Two Catalytic Distillation Columns." Advanced Materials Research 550-553 (July 2012): 550–53. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.550.

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A new approach was proposed to remove sulfuric compounds from fluid catalytic cracking (FCC) gasoline by combining an alkylation desulfurization catalytic distillation (ADCD) column with a hydrodesulfurization catalytic distillation (HDS-CD) column. In the ADCD column, isobutylene (IB) and 3-methylthiophene (3MT) were designated as the model compounds for olefin and sulfide, respectively; NKC-9 cation exchange resin was used as the catalyst. In the HDS-CD column, dibenzothiophene (DBT) was chosen as the model sulfides; Nickel phosphide supported on the TiO2-Al2O3 composite oxide prepared by our laboratory were designated as the HDS catalyst. Simulations for these two CD columns were carried out by RADFRAC module of Aspen Plus. The optimization results revealed that the ADCD column had an alkylation selectivity of 96%, and the sulfur content in the overhead stream was less than 8 μg/g. The simulation results of the HDS-CD process showed that the sulfide in the bottom stream of ADCD column can be removed practically by 100% and the clean oil stream from the bottom of HDS-CD column has hardly any sulfur.

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Krivolutskaya, Nadezhda, Yana Bychkova, Bronislav Gongalsky, Irina Kubrakova, Oksana Tyutyunnik, Elena Dekunova, and Vladimir Taskaev. "New Geochemical and Mineralogical Data on Rocks and Ores of the NE Flank of the Oktyabr’skoe Deposit (Norilsk Area) and a View on Their Origin." Minerals 11, no. 1 (December 31, 2020): 44. http://dx.doi.org/10.3390/min11010044.

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The Oktyabr’skoe deposit in the Norilsk ore district is the largest platinum-copper-nickel deposit in the world. It contains a huge main orebody (2.4 km3) of massive sulfide ores and some smaller sulfide bodies. Almost all publications on this deposit are devoted to the main orebody. However, to solve the problems of the deposit genesis, it is necessary to take into account the geological structure of the entire area and the composition of all orebodies. For the first time we present data on the inner structure, geochemical and mineralogical characteristics of the intrusive body, and related the disseminated and massive sulfide ores (orebody number C-5) in the northeastern flank of the deposit. The intrusion studied in the core of the borehole RG-2 consists of several horizons including the following rock varieties (from bottom to top): olivine gabbro-dolerites, taxitic gabbro-dolerites, picritic gabbro-dolerites, troctolites, olivine-free gabbro-dolerites, ferrogabbro, and leucogabbro. The intrusion shows a strong differentiated inner structure where high-Mg rocks (up to 25 wt.% MgO troctolites and picritic gabbro-dolerites) in the bottom are associated with low-Mg rocks (6–7 wt.%, gabbro-dolerites, leucogabbro, ferrogabbro) without intermediate differentiated members (8–12 wt.% MgO olivine gabbro-dolerites). Rocks are characterized by low TiO2 content (≤1 wt.%). Taxitic gabbro-dolerites, picritic gabbro-dolerites, and troctolites contain disseminated sulfide chalcopyrite-pyrrhotite mineralization (32 m thick). Cu and Ni concentrations reach up 0.74 and 0.77 wt.%, respectively. Massive ores (27 m) occur in the bottom part of the intrusion. The ores consist of pentlandite, chalcopyrite and pyrrhotite, the latter mineral dominates. Their chemical composition is stable: Cu/Ni ~1, Pd/Pt varies from 5 to 6. The C-5 orebody is similar to the C-3 orebody in terms of mineral and chemical compositions, and differ from the nearby the C-4 orebody which is characterized by a Cu/Ni ratio changing from 5 to 8. On the basis of geochemical and mineralogical data, it is assumed that orebodies C-3 and C-5 are associated with one intrusion, while the orebody number C-4 is related to another intrusive body. Thus, the deposit has a more complex structure and includes several more intrusions than is usually considered.

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