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Author: L. A. N. Iyer
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 112
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Author: L. A. N. Iyer
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 112
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Book Description
Author: Lakshinarayanpuran Anantkrishna Narayana IYER
Publisher:
ISBN:
Category :
Languages : en
Pages : 100
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Author:
Publisher:
ISBN:
Category : Textile fabrics
Languages : en
Pages : 476
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Author: A.J. Barber
Publisher: Geological Society of London
ISBN: 1862399697
Category : Science
Languages : en
Pages : 769
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Book Description
Myanmar is a country vastly rich in gold, silver, base metals, tin–tungsten, gems and hydrocarbons and is one of the last exploration frontiers remaining in the world. Tectonically Myanmar lies at the eastern end of the Himalayan Mountain Chain and over the last 50 Ma has been profoundly affected by the collision between India and Eurasia, which is still ongoing, with frequent destructive earthquakes. Recent advances have been made in understanding the results of the collision, through the study of geochronology, seismicity, stratigraphy and structure. The development of a systematic mapping programme has been restricted by problems of access, due to limited infrastructure and armed insurgencies, meaning that large areas of the country have not been explored adequately. Recent political changes and reforms, with reconciliations with various ethnic groups, however, will permit access to large areas in Kayin, Kayah, Shan and Kachin States, enabling further research and exploration in new crustal blocks and terranes. In this Memoir a group of Myanmar and international geologists have combined to include all that is currently known about the geology of Myanmar, its mineral and energy resources and its tectonic development.
Author: A.R. Woolley
Publisher: Geological Society of London
ISBN: 1786204452
Category : Science
Languages : en
Pages : 578
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Book Description
The alkaline igneous rocks and carbonatites are compositionally and mineralogically the most diverse of all igneous rocks and, apart from their scientific interest, are of major, and growing, economic importance. They are important repositories of certain metals and commodities, indeed the only significant sources of some of them, and include Nb, the rare earths, Cu, V, diamond, phosphate, vermiculite, bauxite, raw materials for the manufacture of ceramics, and potentially Th and U. The economic potential of these rocks is now widely appreciated, particularly since the commencement of the mining of the Palabora carbonatite for copper and a host of valuable by-products. Similarly, the crucial economic dominance of rare earth production from carbonatite-related occurrences in China, has stimulated the world-wide hunt for similar deposits. This volume describes and provides ready access to the literature for all known occurrences of alkaline igneous rocks and carbonatites of Antarctica, Asia and Europe excluding the former USSR, Australasia and oceanic islands. More than 1,200 occurrences from 59 countries are outlined together with those of 57 oceanic islands and island groups. The descriptions include geographical coordinates and information on general geology, rock types, petrography, mineralogy, age and economic aspects with the principal references cited. There are 429 geological and distribution maps and a locality index. As has been demonstrated by the three earlier volumes, the present book is likely to be of considerable interest to mineral exploration companies, as there are no comprehensive published reviews of the economic aspects of the alkaline rocks. It will also interest research scientists in the fields of igneous petrology and volcanology, and geologists concerned with the regional distribution of igneous rocks and their geodynamic relationships.
Author: Seriwat Saminpanya
Publisher: Cambridge Scholars Publishing
ISBN: 1036406466
Category : Science
Languages : en
Pages : 306
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Book Description
This book provides a comprehensive review of gem corundum origins worldwide, highlighting the enduring value of rubies and sapphires despite synthetic alternatives. By delving into natural corundum origins and associated minerals, this knowledge boosts corundum prices and intensifies market trade. The book explores formation conditions and key evidence such as trace elements, mineral inclusions, and stable isotopes. These findings elucidate corundum’s origin, linking to the rock types and geological occurrences. Drawing from high-impact journals, books, and the author’s research, it offers valuable insights into synthetic processes and treatments. Catering to mineralogists, geologists, gemmologists, students, and gem traders, the book serves as a valuable reference for identifying gemstone origins. Its rarity in the market makes it particularly valuable for enthusiasts and professionals. As researches in this field continue to grow, this book bridges the gap by making complex terminology accessible to a wide audience.
Author: Lee Andrew Groat
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 330
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Author: Frederick Lin Sutherland
Publisher: MDPI
ISBN: 3039436155
Category : Science
Languages : en
Pages : 234
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Book Description
Ruby, red corundum, is a gem mineral with mineral properties, gem characteristics and chemistry that are reliant on critical trace element substitutions in its aluminum oxide crystal structure. Ruby has attracted scientific and economic interest. It has already been studied extensively regarding its widespread global distribution and the diversity of its geological associations, as revealed by exploration and exploitation. Researchers are becoming increasingly aware that geographic typing of ruby characteristics and its host assemblages may guide further exploration and provide checks on reputed sources of both rough and cut stones. Genetic pointers, based on fluid and solid mineral inclusions, oxygen and other isotope values and pressure and temperature estimates, have already yielded much genetic information. Rare ruby in mantle xenoliths, TP ~1100o C, 2GPa, epitaxial diamond in ruby and ruby in diamond have special interest. Amid the present extensive documentation on this singular gem mineral, new insights and co-existing associations remain to be discovered. Although ruby largely appears in metamorphic and metasomatic source rocks, newer studies suggest it may also arise from magmatic sources. Age-dating of a range of mineral inclusions in ruby now allows more precise modelling of ruby genesis. Tectonic aspects of ruby genesis related to early collisional plate events on Earth are also a frontier for further understanding. In addition, ruby growth remains an important phase in metamorphic studies of events in some young collisional zones. This Special Issue planned for Minerals aims to attract further studies on this multi-origin gem mineral. Investigations at the ‘economic border’ of ruby and sapphire nomenclature and relevant treatments affecting ruby color will be considered.
Author: Michael O'Donoghue
Publisher: Springer Science & Business Media
ISBN: 9400911912
Category : Science
Languages : en
Pages : 395
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Book Description
Gemstones is the first attempt in English to bring together the geological, mineralogical and gemmological developments that have taken place during the last thirty years. Though there have been many gemstone books published in that time, most have been concerned, understandably and rightly, with the science of gem testing and have covered that area very well. Details of the geological occurrence of many of the classic gemstones, and of nearly all those which have only recently been discovered, have been less adequately dealt with. Coverage has been restricted to a number of papers in a wide variety of geological and mineralogical journals. Gemstones hopes to get the balance right. In the preparation of the book all the journals and monographs in the field have been consulted so that the book should stand for some years as the authority to which gemmologists and others turn in the first instance. Ease of reference and depth of coverage make Gemstones both a reference book and a bench book. Acknow ledgements I am grateful to Brian Jackson of the Department of Geology, Royal Museums of Scotland who read the manuscript and painstakingly indicated places where amendment or alteration was needed. I am also grateful to the publishers of the books on which the line illustrations are based. The colour plates present in the book derive from a number of sources, which I would like to acknowledge as follows. Plates 1, 4-15 and 17 Crown copyright reserved.
Author: Ted Themelis
Publisher: Ted Themelis
ISBN:
Category : History
Languages : en
Pages : 280
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Book Description
