Download or read book Mineral association in granitic pegmatites a statistical study written by O. Brotzen and published by . This book was released on 1959 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mineral association in Granitic Pegmatites written by Otto Brotzen and published by . This book was released on 1959 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geology and Petrochemistry of Granitic Pegmatite in Jema a Pegmatite Field Kaduna State written by Ahmed Isah Haruna and published by GRIN Verlag. This book was released on 2012-09-27 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: Doctoral Thesis / Dissertation from the year 2012 in the subject Geography / Earth Science - Geology, Mineralogy, Soil Science, grade: "none", Abubakar Tafawa Balewa University (School of Science), course: Economic Geology-Mineral Exploration, language: English, abstract: The research work “Geology and Petrochemistry of Granitic Pegmatites in Jema’a Field” is a systematic study of the pegmatites in relation to the adjoining granitoids (biotite muscovite granite, albite granite and granite aplite) with a view to understanding their geological and geodynamic evolution and subsequent economic potential through the behavior of rare elements. The field work was conducted on a scale of 1:50, 000. 33 rocks and mineral separates extracted from pegmatites were analyzed. The samples were subdivided into two parts; one part was analyzed using X-Ray Fluorescence to generate data on major and minor elements, while Instrumental Neutron Activation Analysis was used to generate data on trace elements. The other part of the samples was made into thin section for petrographic studies. Petrochemical and petrographic interpretations concur on the changes in colour of micas from brown biotite in granitoids to blue muscovite, to purplish green mica to purple mica in the pegmatites corresponding to increase in rare elements (Rb, Cs, Na, Ta, Nb, Ga) and volatiles (P, H2O, F) from the granitoids into the pegmatites. This constitute a fractionation trend. This is also strongly supported by fairly consistent increase in Aluminum Saturation Index (A/CNK), normative corundum, normative albite, Lost on Ignition (LOI), differentiation Index (DI) and corresponding decrease in Ba, Zr and Ti. The pegmatites contains more fluxes and liquidus depressing elements (P, H2O, F) especially phosphorus. The granitoids (biotite muscovite granite, albite granite and granite aplite) are therefore fertile, peraluminous, siliceous and S-type and are parental to the pegmatites. The feldspars display perthitic textures which show incomplete solid solution and lowering of liquidus. The tectonic discrimination of the granitoids and the pegmatites show that they were formed within syncollisional, peraluminous, and active continental margin. The research suggest fractionation as a metallogenetic process. The genetic model presents the granitoids ; biotite muscovite granite, albite granite and granite aplite as products of internal chemical differentiation of a fractionating batholiths where NaO replaces K2O as the system is cooling. This is common to most granite-rare-elements-pegmatites systems all over the world. Fractionation via rare elements accumulations is therefore an exploration tool.
Download or read book Micas written by S.W. Bailey and published by Walter de Gruyter GmbH & Co KG. This book was released on 2018-12-17 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 13 of Reviews in Mineralogy attempts to gather together much of our knowledge of micas, the most abundant phyllosilicate, and to indicate promising areas of future research. Chapters 1-3 lay the foundations of the classification, structures, and crystal chemistry of micas. Chapter 4 treats bonding and electrostatic modeling of micas. Chapters 5 and 6 cover spectroscopic and optical properties. Chapters 7-13, the bulk of the volume, are devoted to geochemistry and petrology. These include phase equilibria and the occurrences, chemistry, and petrology of micas in igneous, metamorphic, and sedimentary rocks, pegmatites, and certain ore deposits. Some treatments are exhaustive. All are at the forefront of our present knowledge, and indicate clearly the practical applications'of the study of micas to ascertaining various parameters of origin and crystallization history, as well as the many problems that still exist. The aim of this type of treatment is to provide a reference volume for teachers and students and to enable researchers to pick more easily those directions and problems for which future research is most needed or is apt to be most productive or most challenging.
Download or read book Granitic Pegmatites in Science and Industry written by P. Černý and published by . This book was released on 1982 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lanthanides Tantalum and Niobium written by Peter Möller and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare Earth Elements (REE) as well as tantalum and niobium are of tremendous importance because of their specific high-technology applications. The contributions gathered in this volume give an up-to-date survey on the mineralogy, primary ore deposits, prospecting, processing and applications of REE, Ta, and Nd, making this volume a useful handbook for practitioners and students. Finally, the comprehensive coverage of the fundamental aspects, especially as regards REE as tracers of geological phenomena, will prove extremely helpful.
Download or read book Rock Forming Minerals written by William Alexander Deer and published by Geological Society of London. This book was released on 1997 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: This part deals mainly with the disilicates and ring silicates including the epidote, melilite, cordierite and tourmaline groups. In addition to the minerals dealt with in the first edition, some of the rarer but typical minerals in the calc-silicate rocks and the accessory minerals of nepheline-syenites and related rocks have been included. The orthosilicates, in particular the olivine, garnet and humite groups are covered in Volume 1A.
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1973 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of the Geology and Mineralogy of the Rare Earths and Scandium to 1971 written by John Wagstaff Adams and published by . This book was released on 1973 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internal Structure of Granitic Pegmatites written by Eugene Nathan Cameron and published by . This book was released on 1949 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Th Thorium written by Reiner Ditz and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: In connection with the recent treatment of radium and the actinides, the Gmelin Institute is carrying out the description of thorium and its compounds. The Supplement Volumes A 2, A 3, A 4, and A 5 with the history, isotopes, uses, the recovery of thorium and general properties of thorium atom and ions, the thermodynamics of its compounds and solutions, spectroscopic data and analytical chemistry, biological behavior, health protection and safety control have already been published. The Supplement Volumes C 1, C 2 and C 3 describing the compounds with the noble gases, hydrogen, oxygen compounds and nitrogen compounds are also available; also have been published Supplement Volumes C 5 and C 7 describing the compounds with sulfur, selenium, tellurium, and boron, carbonates, thiocynates, alkoxides, and carboxylates. The Supplement Volumes D 1, D 2, and D 3 describing the properties of thorium ions in solution and the solvent extraction of thorium as well as Supplement Volume E describing the coordination compounds also have been published. The present volume begins, in a summary fashion, with a description of the natural occurrence of the element Th. Especially stressed are those facts that are most important in understanding its geological distribution on Earth (as, e.g., mode of occurrence and distribution among minerals) and its behavior in minerals (as, e.g., mode of occurrence and distribution among minerals) and its behavior in minerals (as, e.g., diadochy and metamictization of minerals). Attached is a tabulation of the highest reported Th or ThO2 content in minerals that normally (by their crystal-chemical formula) do not contain Th. The main part of the present volume describes the minerals of Th. As can be seen from the crystal-chemical formulas, there are, in addition to a few minerals containing Th as the sole cation, a number of minerals that contain Th as an additional cation or as a diadochic element. In the case of diadochic substitution the mineral may represent a Th-rich end member of a solid-solution series and, therefore, is described as a separate Th mineral, or may only sporadically contain higher amounts of Th (no mineral description is given). The mineral descriptions, in this volume including oxides, carbonates and phosphates/siliconphosphates of Th, comprise the following topics: occurence; chemistry; crystal form and structure; optical and other physical properties; and chemical and thermal behavior. The silicates of Th and the deposits of Th will be described in the volume "Thorium" Suppl. Vol. A 1b, that also contains a mineral index for both volumes.
Download or read book Pegmatites written by David London and published by . This book was released on 2008 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accompanying CD-ROM contains all illustrations of volume and PDF of chapters of "Graranitic pegmatites, short course handbook 7" published in 1982, edited by Petr Černý, P.
Download or read book Internal Structure of Granitic Pegmatites written by Eugene Nathan Cameron and published by . This book was released on 1949 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of strategic mineral deposits in the major domestic pegmatite districts by the U.S. Geological Survey from 1939-1945 resulted in the clarification of many problems related to the internal structure, mineralogy and origin of granitic pegmatites. This report summarises about 68 man years of work in the pegmatite districts of New England, the Southeastern States, South Dakota, Idaho, Montana, Wyoming, Colorado, and New Mexico.
Download or read book A Collector s Guide to Granite Pegmatites written by Vandall T. King and published by Schiffer Pub Limited. This book was released on 2010 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Granite pegmatite crystals have long been admired by gem and mineral collectors as a source of fine specimens and gem materials. Pegmatites can host important deposits of ore minerals and industrial commodities, such as feldspar and mica. Their physical and chemical complexity presents daunting challenges to researchers who seek to better understand their nature and origins. With 209 stunning color photos and clear, authoritative text, this book provides a thorough discussion. Chapters cover pegmatite forms and distributions, interior structures, crystal, mineral, and gem pockets, and references for further study. Examples are from North America as well as worldwide.
Download or read book Research papers written by and published by . This book was released on 1968 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quartz Deposits Mineralogy and Analytics written by Jens Götze and published by Springer Science & Business Media. This book was released on 2012-04-23 with total page 365 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book will include contributions of the state of the art of quartz raw materials (deposits and properties) and their analytics. The chapters are presented by leading scientists in the quartz field. The presentations cover the main interrelations between genesis of quartz - formation of specific properties - analytics - industrial applications of SiO2 raw materials.
Download or read book Economic Geology and the Bulletin of the Society of Economic Geologists written by and published by . This book was released on 1963 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
