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Добірка наукової літератури з теми "040306 Mineralogy and Crystallography"

Автор: Grafiati
Опубліковано: 10 грудня 2022
Оновлено: 28 січня 2023

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Статті в журналах з теми "040306 Mineralogy and Crystallography"

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SUGIYAMA, Kazumasa, and Akihiko NAKATSUKA. "Mineralogy and Crystallography." Nihon Kessho Gakkaishi 56, no. 3 (2014): 149. http://dx.doi.org/10.5940/jcrsj.56.149.

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2

Gurzhiy, Vladislav V. "Mineralogical Crystallography." Crystals 10, no. 9 (September 11, 2020): 805. http://dx.doi.org/10.3390/cryst10090805.

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Gurzhiy, Vladislav V. "Mineralogical Crystallography Volume II." Crystals 12, no. 11 (November 13, 2022): 1631. http://dx.doi.org/10.3390/cryst12111631.

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4

Hawthorne, Frank C. "Mathematical crystallography, reviews in mineralogy, vol. 15." Geochimica et Cosmochimica Acta 50, no. 7 (July 1986): 1565. http://dx.doi.org/10.1016/0016-7037(86)90333-9.

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5

Alves, Carlos, Carlos Figueiredo, and Jorge Sanjurjo-Sánchez. "Virtual Models for Crystallography Teaching in Mineralogy: Some Suggestions." Environmental Sciences Proceedings 5, no. 1 (December 1, 2020): 10. http://dx.doi.org/10.3390/iecg2020-08738.

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Crystallography concepts are usually among the most demanding subjects for Mineralogy students. Traditional onsite teaching of Mineralogy starts with physical models of crystal polyhedra and frequently also includes the observation of models of crystal structures. These teaching strategies could be difficult to implement under pandemic situations like the present one. But they also have other disadvantages under the usual access conditions as their use by the students is restricted by the number of students in relation to the number of models and by the availability of the models and teaching staff. Additionally, onsite teaching can pose challenges to both students and teachers with temporal or permanent disabilities. We consider here some possibilities of teaching with virtual models of crystal polyhedra, twinning, and crystal structures, based on some of the available freeware options and considering the main concepts taught in the usual Mineralogy syllabus.
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6

Voytehovskiy, Yuri. "From teaching experience. XI. History and philosophy at the crystallography and mineralogy courses." Vestnik of geosciences, no. 6 (August 12, 2022): 44–52. http://dx.doi.org/10.19110/geov.2022.6.5.

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The article is devoted to the history and philosophy of crystallography and mineralogy. Composed from individual plots, in general, it shows a wide range of topics advisable to discuss with geological students at the Crystallography and Mineralogy courses. This can be done in the framework of the lectures during pauses recommended by the current pedagogical methods, or optionally. An extensive list of primary sources and fresh literature is given to prepare conversations. Their goal is attracting students to read a serious literature on the history and philosophy of the studied sciences.
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Yuan, Xue, Li Guowu, and Yang Guangming. "Mineralogy and Crystallography of Stokesite From Inner Mongolia, China." Canadian Mineralogist 55, no. 1 (January 2017): 63–74. http://dx.doi.org/10.3749/canmin.1600045.

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8

Plášil, Jakub. "Mineralogy, Crystallography and Structural Complexity of Natural Uranyl Silicates." Minerals 8, no. 12 (November 27, 2018): 551. http://dx.doi.org/10.3390/min8120551.

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Naturally occurring uranyl silicates are common constituents of the oxidized parts (i.e., supergene zone) of various types of uranium deposits. Their abundance reflects the widespread distribution of Si4+ in the Earth’s crust and, therefore, in groundwaters. Up to date, 16 uranyl silicate minerals are known. Noteworthy is that the natural uranyl silicates are not extremely diverse regarding their crystal structures; it is a result of possible concentrations (activity) of Si4+ in aqueous solutions derived from dissolution of primary Si minerals or the composition of late hydrothermal fluids. Therefore, in natural systems, we distinguish in fact among two groups of uranyl silicate minerals: uranophane and weeksite-group. They differ in U:Si ratio (uranophane, 1:1; weeksite, 2:5) and they form under different conditions, reflected in distinctive mineral associations. An overview of crystal-chemistry is provided in this paper, along with the new structure data for few members of the uranophane group. Calculations of the structural complexity parameters for natural uranyl silicates are commented about as well as other groups of uranyl minerals; these calculations are also presented from the point of view of the mineral paragenesis and associations.
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Kahlenberg, Volker, Clivia Hejny, and Johan P. R. deVilliers. "How crystallography can assist process mineralogy – two metallurgical examples." Acta Crystallographica Section A Foundations and Advances 72, a1 (August 28, 2016): s60. http://dx.doi.org/10.1107/s2053273316099095.

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Nakamura, Tomoki, Takaaki Noguchi, and Masahiko Tanaka. "Mineralogy and crystallography of return samples from primitive asteroids." Acta Crystallographica Section A Foundations and Advances 73, a2 (December 1, 2017): C1299. http://dx.doi.org/10.1107/s2053273317082766.

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Дисертації з теми "040306 Mineralogy and Crystallography"

1

Foley, Jeffrey A. "The use of optimization methods and thermodynamic implications in mineralogy." Oxford, Ohio : Miami University, 2001. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami997447312.

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Becker, Megan. "The mineralogy and crystallography of pyrrhotite from selected nickel and PGE ore deposits and its effect on flotation performance." Thesis, Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-09272009-100136/.

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Morrison, Shaunna M., and Shaunna M. Morrison. "Crystal Chemistry of Martian Minerals." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625376.

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The NASA Mars Science Laboratory (MSL) rover, Curiosity, began exploring Gale crater, Mars in August, 2012 with the primary goal of assessing the past and present habitability of the martian surface. To meet this goal, Curiosity is equipped with an advanced suite of scientific instruments capable of investigating the geology, geochemistry, and atmospheric conditions on Mars. Among these instruments is the CheMin (Chemistry and Mineralogy) X-ray diffractometer whose function is to identify mineral phases present in sediments and rocks by means of X-ray diffraction (XRD). Characterizing the mineralogical make-up of a rock unit is an important step in determining its geologic history. Primary igneous minerals, such as feldspar, olivine, and pyroxene, give information about parental magmas - their composition, temperature, depth and so on. Secondary alteration minerals, like jarosite or akaganeite, point to distinct weathering or diagenetic processes. As such, understanding the mineral occurrence and abundance in Gale crater provides the MSL team with a robust foundation from which to make geologic interpretations. This dissertation details the methods used to determine the chemical composition of selected mineral phases based solely on XRD patterns from CheMin. Curiosity is equipped with instruments capable of measuring bulk composition of a sample [e.g., APXS (Alpha Particle X-ray Spectrometer)] but has no instrument capable of measuring the composition of a single phase in a multi-phase sample. Therefore, we developed crystal chemical algorithms and calibrations based on refined unit-cell parameters in order to predict mineral phase compositions. We have calculated algorithms for plagioclase, alkali feldspar, Mg-Fe-Ca clinopyroxene, Mg-Fe orthopyroxene, Mg-Fe olivine, Fe-oxide spinel, and alunite-jarosite group minerals. Furthermore, we use the estimated compositions of crystalline material in conjunction with bulk sample chemistry from APXS to estimate of the composition of the X-ray amorphous material present in each of the samples analyzed by CheMin in Gale crater.
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Watkins, JJ. "Regional settings of structurally hosted gold mineralization in the Mudgee-Gulgong District, N.S.W." 1997. http://eprints.utas.edu.au/3043.

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The Mudgee-Gulgong district is located within the exposed northeastern margin of the Lachlan Fold Belt in New South Wales. The district was an important gold mining centre in the 1800's and produced up to 1 million ounces of gold, mostly from deep leads. Re-mapping of the area has resulted in a major revision to the stratigraphy and structural knowledge of the area. Significant changes include the recognition of the formerly known Early Devonian Burranah Formation as a Late Ordovician volcanic unit with significant exploration potential for Au-Cu mineralization. Also recognised is a Late Silurian shelf sequence with potential for Au-Cu and base metals overlying the Burranah Formation. The Burranah Formation is a dominantly submarine, volcano-sedimentary succession with a complex internal stratigraphy. Two main lithofacies associations can be recognised on the magnetic images. A lower package, composed mostly of primary volcanic rocks and minor volcaniclastics is overlain by a package composed dominantly of volcaniclastics and sediments. Small elongate intrusive bodies occur throughout the sequence. Structural interpretation of the area reveals one dominant D2 deformation (Early Carboniferous) that produced meridional to northwest-trending folds, cleavage, thrust faults and oblique-slip faults. A zone of higher strain is developed within the Burranah Formation and is characterised by overturned, tight, F2 folds and considerable shortening. Mapping and interpretation of the area has been greatly assisted by the availability of high resolution gravity, magnetic and radiometric data. The interpretation of magnetic data has considerably enhanced the structural interpretation. Volcanic and intrusive rocks of the Burranah Formation comprise a coherent calcalkaline suite with a dominantly shoshonitic character. In MORB-normalized plots, they display patterns typical of many modern subduction-related volcanics with a marked depletion of Ta and Nb and similar or lower abundances of the heavy REE and Ti. Positive εNd values indicate a mantle source for the shoshonites with little or no crustal contamination. Primary gold mineralization in the district occurs in veins and as disseminations in the structurally more competent rocks adjacent to faults and shear zones in the higher strain zone. Host rocks are generally intrusive monzodiorites, diorites or coherent volcanics and range in age from Late Ordovician to Early Devonian. Sulphur and lead isotope data support a syndeformational model for mineralization with fluids and gold derived from the host rock sequence.
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Sung, Yoo Hyun. "The Nature of Gold Mineralization in the Multistage Archean Sunrise Dam Gold Deposit, Eastern Yilgarn Craton, Western Australia." 2008. http://arrow.unisa.edu.au/vital/access/manager/Repository/unisa:36670.

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This thesis presents the results of a detailed study of the mineralogy and paragenesis of gold at the Sunrise Dam gold deposit. The Sunrise Dam mine is the largest gold deposit in the Archean Laverton Tectonic Zone of the Eastern Goldfields Province, Yilgarn Craton, Western Australia. A number of previous studies have established the geology, geochemistry and geochronology, but the nature of the gold mineralogy and distribution has remained poorly characterized. Mineralogical studies have established a paragenetic sequence consisting of five hydrothermal stages (D1, D2, D3, D4a and D4b) which are generally in accord with the major deformation events at Sunrise Dam gold deposit. The D4a stage was the dominant episode of Au deposition, followed, in importance by the D4b stage, which is characterized by more diverse ore mineralogy including base metal sulfides, sulfosalts, and telluride minerals. Based on EPMA results, native gold in D4a stage has higher purity, with a small range of Ag variations (fineness 923 ~ 977, average 945), than that of the D4b stage (fineness 596 ~ 983, average 899), in which fineness values decrease systematically in accord with mineral paragenesis, reflecting that gold deposition was from a progressively compositionally evolving hydrothermal fluid with respect to Au/Ag ratios. The occurrences of As-rich pyrites are restricted to steeply-dipping ore bodies, which are most likely structurally connected at various level by channel ways through which As-rich (D4a) hydrothermal fluid migrating upward. There is a systematic variation in composition of the tetrahedrite-group minerals ranging from Sb to As end-members with highly variable Zn:Fe ratios, which correlates with the later paragenetic stages (D3, D4a, and D4b) and mineral associations. The composition of the tetrahedrite-group minerals is useful as a petrogenetic indicator of the evolution of the hydrothermal mineralizing systems with time. A total of thirteen telluride mineral species, including two unnamed phases, were identified in the D4 veins. Among them nagyágite, the complex Pb-Sb-Au tellurosulfide is most abundant. The deposit is the second occurrence of this mineral in the Yilgarn Craton. Compositionally, nagyágite from Sunrise Dam conforms to ideal stoichiometry, with negligible As content and Au/(Au+Te) ratio of 0.325. The diverse mineralogy of the post-D4 veinlets relative to the host veins is attributed to small-scale reaction fronts established along zones of replacement. The presence of Au-Ag tellurides in D4 veins and the character of their breakdown products have implications for the gold recovery as well as for the genetic interpretation of the deposit. During the D4b stage, Au-richer telluride and Au-richer native gold mineralization formed earlier than Ag-(Au)-telluride and Ag-richer gold mineralization. Values of f(Te2) and f(S2) for the early telluride assemblages were determined at 300°C to be -10.7 to -7.8 (log fTe2) and 11.4 to -8.6( log fS2 ). The Au content of arsenian pyrite and arsenopyrite from four mineralizing stages (D1, D3, D4a and D4b) was measured using in-situ LA-ICP-MS. The average Au concentration is 44.5 ppm in pyrite (n = 224) with maximum value of 3,067 ppm, and 1,483 ppm in arsenopyrite (n = 35) with maximum value of 5,767 ppm, which are the highest concentrations reported for the Yilgarn Craton. The concentrations of invisible Au in arsenian pyrite at Sunrise Dam varies with mineralizing events, mineral paragenesis, and textural type. Gold is strongly enriched in D4a stage pyrite (average 80.8 ppm) and to a lesser extent in D4b pyrite (average 16.8 ppm). Pyrite from D1 (average 3.55 ppm) and D3 (average 2.96 ppm) show much lower levels of Au enrichment. The presence of metallic Au below the Au solubility limit in the Sunrise Dam pyrite is interpreted as evidence of an epigenetic origin for Au mineralization. Small-scale remobilization during dissolution-reprecipitation (D4a) and recrystallization (post-D4b) processes resulted in the Au enrichment and the upgrading of Au during successive hydrothermal events in the deposit. The speciation of Au at Sunrise Dam and the exceptional size of the deposit are the result of multiple fluid flow and multiple Au-precipitating mechanisms over a single plumbing system.
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Sedeva, Iliana. "Probing the adsorption of polymer depressants on hydrophobic surfaces using the quartz crystal microbalance." 2010. http://arrow.unisa.edu.au:8081/1959.8/92477.

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The hydrophobicity of a surface is an important property in many areas of science and engineering. This is especially the case in mineral processing, where differences in surface hydrophobicity lie at the heart of the separation process of flotation. Chemicals are used to increase and decrease the natural hydrophobicity of minerals to attain a better separation between valuable and worthless material. Polymers are often used to reduce mineral surface hydrophobicity. Decades of empirically based decision making have produced a list of effective depressants. However the detailed study of how these polymer depressants affect surface hydrophobicity and mineral recovery lags behind applied investigations. The aim of this thesis was to study the adsorption of commonly used depressants on model surfaces and to interrogate the action of these polymers in reducing surface hydrophobicity. We have modelled the degree of hydrophobicity of common minerals in order to study polymer depressants with methods not commonly used in studies of surface characterisation in flotation. The model surfaces (self-assembled monolayers, SAMs) allowed us to use the quartz crystal microbalance with dissipation monitoring (QCM-D) to study the adsorption of polymers. The QCM-D can be used to obtain adsorption isotherms, adsorption kinetics, water content of adsorbed layers, and information on the conformation of the adsorbed polymer. The results from the QCM-D were correlated with the contact angle data from the captive bubble measurements, with which we assessed the hydrophobicity of the surface before and after polymer adsorption. Three of the polymers layers were probed with dynamic dewetting studies, in order to test other modes of depressant action. Three types of polymers were studied - a polyacrylamide (Polymer-H), a polyelectrolyte CMC (carboxymethyl cellulose) and a group of dextrins (Dextrin-TY, a phenyl succinate substituted dextrin (PS Dextrin) and a styrene oxide substituted dextrin (SO Dextrin)). These polymers are commonly used or have potential to be used in the depression of talc and graphite. Polymer-H was used to investigate the hydrophobic bonding between a non-ionic polymer depressant and chemically inert and non charged surfaces by probing the influence of substrate hydrophobicity on polymer adsorption and reduction of contact angle. Three different model surfaces were used (mixed self-assembled 0.5 SAM, 0.7 SAM or single self-assembled 1.0 SAM monolayers) with advancing contact angles between 75?? and 119??. The study of Polymer-H found that the substrate hydrophobicity is an important factor in adsorption of this polymer and the change in contact angle upon adsorption depends on adsorbed amount. The effectiveness of Polymer-H to reduce surface hydrophobicity was established to correlate with its conformation and morphology. CMC was investigated to find out how a stimulus responsive polymer depressant can be used in flotation. It was established that the adsorbed amount and rate of adsorption of CMC increase with decreasing of pH or increasing of ionic strength. It was shown that the surface hydrophobicity of a CMC pre-adsorbed layer changes with the environment and these alterations are fully reversible. A switch of ionic strength (from 10-2 M KCl to 10-1 M KCl) caused partial dehydration of the adsorbed layer and a decrease of the receding contact angle by 20??. A pH switch (pH = 9 to pH = 3) resulted in a 40?? change in receding contact angle. The CMC investigation showed that the use of a stimulus responsive polymer presents opportunities for exploiting solution conditions as a means to effect a better mineral separation in flotation The adsorption of three dextrin-based polymers on a model hydrophobic surface has been characterized using the quartz crystal microbalance with dissipation monitoring (QCM-D). The three polymers (one standard dextrin and two dextrins with different aromatic group substitutions) exhibited varying affinities and capacity for adsorption on the hydrophobic substrate. The effect of the three polymers on the static contact angle of the surface was studied using captive bubble contact angle measurements. The three polymers were seen to reduce the receding contact angle by similar amounts (approximately 14 degrees) in spite of having varying adsorbed amounts and differences in adsorbed layer water content. Although no differences were observed in the ability of the polymers to reduce the static contact angle, measurements of the dewetting dynamics between a rising air bubble and the polymer covered substrate yielded stark differences between the polymers, with one polymer slowing the dewetting dynamics by an order of magnitude more than the other two polymers. The differences in dewetting behaviour correlate with the adsorbed layer characteristics determined by QCM-D.
Thesis (PhD)--University of South Australia, 2010
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Книги з теми "040306 Mineralogy and Crystallography"

1

Borchardt-Ott, Walter. Crystallography. 2nd ed. Berlin: Springer, 1995.

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2

Crystallography. 3rd ed. Germany: Springer, 2011.

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3

Crystallography. Berlin: Springer-Verlag, 1993.

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4

al-Maqṣūd, Muḥammad ʻAlī ʻAbd. ʻIlm al-ballūrāt wa al-maʻādin. al-Dawḥah: Jāmiʻat Qaṭar, Lajnat al-Taʻrīb, 1998.

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5

1906-, Hurlbut Cornelius Searle, and Dana James Dwight 1813-1895, eds. Manual of mineralogy: (after James D. Dana). 2nd ed. New York: Wiley, 1985.

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6

G, Abramovich M., та Afonina G. G, ред. Fiziko-khimicheskie prevrashchenii͡a︡ realʹnykh kristallov v mineralʹnykh sistemakh: V.L. Tauson, M.G. Abramovich. Novosibirsk: Izd-vo "Nauka," Sibirskoe otd-nie, 1988.

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7

1906-, Hurlbut Cornelius Searle, and Dana James Dwight 1813-1895, eds. Manual of mineralogy: (after James D. Dana). 2nd ed. New York: J. Wiley, 1999.

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8

1906-, Hurlbut Cornelius Searle, and Dana James Dwight 1813-1895, eds. Manual of mineralogy: (after James D. Dana). 2nd ed. New York: Wiley, 1993.

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9

Vainshtein, Boris K. Modern Crystallography 2: Structure of Crystals. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000.

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10

Hurlbut, Cornelius Searle. Dana's minerals and how to study them. 4th ed. New York: Wiley, 1997.

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Частини книг з теми "040306 Mineralogy and Crystallography"

1

Gribble, C. D., and A. J. Hall. "Transmitted-light crystallography." In Optical Mineralogy, 215–42. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-9692-9_4.

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2

Gribble, C. D. "The elements of crystallography." In Rutley’s Elements of Mineralogy, 47–80. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-011-6832-8_3.

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3

Gribble, C. D., and A. J. Hall. "Transmitted-light crystallography." In A Practical Introduction to Optical Mineralogy, 180–201. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-011-7804-4_4.

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4

Brodskaya, R. L., and E. L. Kotova. "Petrographic Crystallography in Solving Problems of Applied Mineralogy." In Proceedings of the 10th International Congress for Applied Mineralogy (ICAM), 81–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27682-8_11.

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5

Effenberger, Herta Silvia. "The Mineral Collection of the Department of Mineralogy and Crystallography." In Academic Showcases, 127–30. Wien: Böhlau Verlag, 2015. http://dx.doi.org/10.7767/9783205201519-037.

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6

Marcos, Celia. "Methods and Applications of X-ray Diffraction in Crystallography and Mineralogy." In Springer Textbooks in Earth Sciences, Geography and Environment, 383–436. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-030-96783-3_17.

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7

"Transmitted-light crystallography." In Optical Mineralogy, 215–42. CRC Press, 1993. http://dx.doi.org/10.1201/b12647-5.

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8

"REVIEWS IN MINERALOGY." In Mathematical Crystallography, edited by Monte B. Boisen and Gerald V. Gibbs, III. Berlin, Boston: De Gruyter, 1990. http://dx.doi.org/10.1515/9781501508912-002.

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9

"Brief Review of Crystallography and Crystal Chemistry." In Meteorite Mineralogy, 58–65. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108613767.004.

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10

Krivovichev, S. "Structure description, interpretation and classification in structural mineralogy." In Mineralogical Crystallography, 1–77. Mineralogical Society of Great Britain & Ireland, 2017. http://dx.doi.org/10.1180/emu-notes.19.2.

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Тези доповідей конференцій з теми "040306 Mineralogy and Crystallography"

1

Omran, Mohamed, and Mahmoud Khalifeh. "Development of Low Carbon Dioxide Intensive Rock-Based Geopolymers for Well Cementing Applications – One-Part Geopolymer." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-78535.

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Abstract This study aims to reveal the development of short-term mechanical and chemical properties of one-part geopolymers for utilization in well construction and well abandonment activities. These geopolymers are heat-cured rock-based one-part products. The rock-based geopolymer precursor was activated by solid powders of potassium silicate. To enhance the setting time and early strength development of the geopolymers, a small portion of alkaline solution (KOH) was used as an accelerator. Properties of the slurry were characterized through investigating mechanical and chemical techniques. Sonic strength and uniaxial compressive strength of the specimens were studied. In addition, the mineralogy of the solidified samples was analyzed through crystallography to better understand their microstructure. Moderate compressive strength of ca. 7 to 10 MPa within 24 hours and up to 7 days were developed for the investigated one-part geopolymer mixes that have been activated by a solid activator with a modulus ratio of 2.4. One-part geopolymers not only could provide user-friendly slurries, but also can facilitate their commercialization and large-scale application in petroleum and civil engineering sectors.
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