Uranous mineralogy of hypergene reduction region : using electron microscopy data / / Olga Alexandrovna Doynikova

• Autore: Doynikova Olga Alexandrovna
• Pubblicazione: Cham, Switzerland : , : Springer, , [2021]; ©2021
• Descrizione fisica: 1 online resource (222 pages)
• Disciplina: 553.4932
• Soggetto topico: Uranium ores
• Nota di contenuto: Intro -- Annotation -- Introduction -- Contents -- Chapter 1: Practices of Dispersed Uranium Minerals Study by AEM Methods -- 1.1 Transmission Electron Microscopy Possibilities in Minerals Study -- 1.1.1 SAED Method in Dispersed Minerals Study -- 1.1.1.1 Comparative Possibilities of Electron Microdiffraction and X-Ray Diffraction in Dispersed Uranium Minerals Study -- 1.1.1.2 General Principles and Techniques for Electronograms Interpretation -- 1.1.1.3 Methodical Techniques for Decoding SAED-Patterns -- 1.1.2 Composition Analysis of Dispersed Minerals in EM -- 1.2 Scanning Electron Microscopy Possibilities in Minerals Study -- 1.3 Objects of Research, Equipment -- 1.4 Electron Microscopy Contribution to Uranium Mineralogy (some History) -- References -- Chapter 2: U-Ore Mineralization of Hypergenesis Reduction Zone: Uranium ``Blacks´´ -- 2.1 Regularities of Black´s Uranium Mineralization Manifestation in Hypergenesis Region -- 2.1.1 Formation of Uranium-Ore Deposits in Hypergenesis Region (after L.N. Belova 2000) -- 2.1.2 Processes of Hypergenic Zonality Formation by Uranium Minerals (after L.N. Belova 2000) -- 2.1.3 General Regularities of Uranium Mineral-Formation in the Hypergenesis Region -- 2.2 Examples of Uranium Deposits with Commercial Black U Ores -- 2.2.1 Examples of Complete Substitution of Primary U Ores in Hypergenic Environment (Taboshar and Tuya-Muyun Deposits, Central... -- 2.2.2 Stratum-Infiltration Deposits (Chu-Sarysu Type) -- 2.2.3 Paleochannel Basal Type Deposits (New Phosphate Type of U Black Ores) -- 2.2.4 Ground-Infiltration Weathering Deposit (Secondary Ores of Kosachinoye) -- 2.2.5 Participation of Microbiological Factor in Black´s Uranium Ores Formation -- 2.3 Mineral Composition of Uranium Blacks -- 2.3.1 Brief Historical Background on ``Uranium Black´´ Study. ; 2.3.2 Results of Uranium Black Mineral Composition Studies -- 2.3.2.1 Uraninite -- 2.3.2.2 Coffinite -- 2.3.2.3 Ningyoite -- 2.3.2.4 Microbiological Factors in Ningyoite Ores Formation -- 2.4 Conclusions -- References -- Chapter 3: New Minerals Family: U4+-Phosphates -- 3.1 Ningyoite: CaU4+(PO4)2. nH2O-of Rhabdophane Group Mineral -- 3.1.1 Morphological and Optical Characteristics -- 3.1.2 Crystallochemical Characteristics -- 3.1.2.1 Diffraction Data -- 3.1.2.2 New Structural Data on Ningyoite -- 3.1.2.3 About Uranium Valence in Ningyoite -- 3.1.2.4 Chemical Composition -- 3.1.2.5 Isomorphism of Ningyoite Composition -- 3.1.3 Tristramite Is Analogue of Ningyoite -- 3.1.4 Ningyoite Occurrences (Deposit Types, Mineral Associations) -- 3.1.5 About Ningyoite Formation Conditions -- 3.1.6 Conclusions -- 3.2 Mineral Group of Lermontovite -- 3.2.1 Lermontovite: (U4+0.94 T0.4 Ca0.02) [4]3- ()1.20.4 2 -- 3.2.1.1 Morphological and Optical Characteristics -- 3.2.1.2 Crystal-Chemical Characteristics -- 3.2.1.3 Location (Finds, Mineral Associations) -- 3.2.2 Vyacheslavite: U4+(P4)(OH)n2 -- 3.2.2.1 Morphological and Optical Characteristics -- 3.2.2.2 Crystal-Chemical Characteristics -- 3.2.2.3 Location (Finds, Mineral Associations) -- 3.2.3 Urphoite: U6(PO4)7(OH)3.nH2O -- 3.2.3.1 Morphological and Optical Characteristics -- 3.2.3.2 Crystal-Chemical Characteristics -- 3.2.3.3 Location (Finds and Mineral Associations) -- 3.2.3.4 Brief Historical Information of Paperwork for Urphoite -- 3.2.4 Conclusions -- References -- Chapter 4: Some Aspects of Uranous (U4+) Mineralogy in the Light of Crystallochemical ATEM Data -- 4.1 Genetic Crystallochemistry of Uranous Minerals -- 4.1.1 Obtaining Genetic Information through Available Crystallochemical Data -- 4.1.2 Genetic Analysis of Crystallochemical Data. ; 4.1.3 Genetic Conclusions from Uranous Minerals´ Crystallochemical Data -- 4.2 Questions of Isomorphism and Systematics of Phosphates in Rhabdophane Mineral Group -- 4.2.1 Mineral Composition of Rhabdophane Group -- 4.2.2 Isomorphism in Rhabdophane Group Phosphates -- 4.2.3 Cationic Isomorphism Schemes -- 4.2.3.1 Relationship Between Isomorphism and Mineral Formation -- 4.2.4 On the Structural Position of Isomorphic Cations -- 4.2.4.1 On Issue of Formation Conditions of Rhabdophane Group Minerals -- 4.2.5 Summary -- 4.3 On Question of Mineralogy Tetravalent Uranium U4+ -- 4.3.1 AEM Data on Widely-Known Tetravalent Uranium Minerals -- 4.3.2 Preconditions for Discovery of New Uranium Minerals -- 4.3.2.1 Mineral Phase of the Phosphosilicate Composition -- 4.3.2.2 About Uranium-Titanium Mineralization -- 4.3.3 About Ca Place in Tetravalent Uranium Minerals -- 4.4 Conclusions -- References -- Chapter 5: Paleochannel Sandstone-Type Uranium Deposits of Vitim Ore Region -- 5.1 Paleochannel Deposits of Khiagda Ore Field, Vitim Plateau, Russia -- 5.2 Composition of Uranium Ores on Khiagda Ore Field Deposits -- 5.3 Conclusions -- References -- Chapter 6: Nature of Uranous Ore Formation in Hypergenesis Region -- 6.1 Biogenic Aspect of Uranous Ore Formation -- 6.2 Phosphorus Source for Ningyoite Formation -- 6.3 Phosphate Uranous Ores Composition as Indicator of their Biogenic Origin -- 6.4 The Reasons for Different Uranous Ores Composition -- 6.5 Geochemical Law Named after V.I. Vernadsky -- 6.6 Conclusions -- References -- Conclusion.
• Titolo autorizzato: Uranous Mineralogy of Hypergene Reduction Region
• ISBN: 3-030-67183-6
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9910484920303321
• Lo trovi qui: Univ. Federico II
• Serie: Springer Mineralogy