A New Polytype of Taaffeite--a Rare Beryllium Mineral from the Granulites of Central Australia PDF Download

Author: D. R. Hudson
Publisher:
ISBN:
Category : Beryllium
Languages : en
Pages : 5

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Author: Edward S. Grew
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501508849
Category : Science
Languages : en
Pages : 704

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Book Description
Volume 50 of Reviews in Mineralogy and Geochemistry treats Beryllium and its cosmogenic isotopes. This volume includes an overview of Be studies in the earth sciences and a systematic classification of Be minerals based on their crystal structure. It treats the analysis of these minerals by the secondary ion mass spectroscopy as well as experimental studies of systems involving Be. Moreover, this volume reviews the behavior of Be in the Solar System, with an emphasis on meteorites, the Moon and Mars, and the implications of this behavior for the evolution of the solar system. It gives an overview of the terrestrial geochemistry of Be and discusses the contamination of the environment by this anthropogenic toxin. It reports use of the longer lived Be-10 to assess erosion rates and other surficial processes and how this isotope can yield independent temporal records of geomagnetic field variations for comparison with records obtained by measuring natural remnant magnetization, be a chemical tracer for processes in convergent margins, and can date events in Cenozoic tectonics. It reviews applications of the shorter lived isotope Be-7 in environmental studies as well. Residual phases include acidic plutonic and volcanic rocks, whose geochemistry and evolution are covered, while granitic pegmatites, which are well-known for their remarkable, if localized, Be enrichments and a wide variety of Be mineral assemblages, are reviewed. Not all Be concentrations have obvious magmatic affinities; for example, one class of emerald deposits results from Be being introduced by heated brines. Pelitic rocks are an important reservoir of Be in the Earth's crust and their metamorphism plays a critical role in recycling of Be in subduction zones, eventually, anatectic processes complete the cycle, providing a source of Be for granitic rocks.

Author:
Publisher:
ISBN:
Category : Gemology
Languages : en
Pages : 828

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Vols. for July 1964 include Proceedings of the Gemmological Association of Great Britain.

Author:
Publisher:
ISBN:
Category : Precious stones
Languages : en
Pages : 564

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Vols. for July 1964 include Proceedings of the Gemmological Association of Great Britain.

Author: Geological Society of Australia
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 526

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Author: R.G. Taylor
Publisher: Elsevier
ISBN: 0444597905
Category : Nature
Languages : en
Pages : 556

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Developments in Economic Geology, 11: Geology of Tin Deposits focuses on the principles, methodologies, and approaches involved in the study of the geology of tin deposits. The book first tackles metallogenic provinces, primary tin deposits, and tin in the geochemical cycle. Topics include tin distribution, deposits associated with anorogenic granites and passive and/or batholithic magmatic environments, deposits related with terrestrial acid lava flows, classification of provinces and province analysis, and plate tectonics and tin provinces. The manuscript then ponders on the relationship between granitoids and tin concentration, significant geological features of tin deposits and their application in search techniques, and observations on large low grade tin ores. Concerns include tonnage-grade curves of various deposit types, porphyry tin deposits, geochemical prospecting, vein analysis, tin distribution and concentration mechanisms in the igneous environment, and trace element specialization. The text takes a look at the transport of tin in the formation of ore deposits, mineralogy and aspects of the crystal chemistry of tin, aspects of secondary deposits, and economic and management considerations. The publication is a dependable reference for researchers interested in the geology of tin deposits.

Author: Leonard James Spencer
Publisher:
ISBN:
Category : Mineralogy
Languages : en
Pages : 698

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Author:
Publisher:
ISBN:
Category : Mineralogy
Languages : en
Pages : 684

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 600

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Book Description
Vols. for 1964-v. 2, no. 1, 1965 include selected articles translated from geochemical papers from other languages, but primarily from Russian, German, French and Japanese.

Author: Geological Society of Australia
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 414

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