Download or read book Artisanal Diamond Mining written by Koen Vlassenroot and published by Academia Press. This book was released on 2008 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Effective development of artisanal diamond mining communities must be based on a thorough understanding of the inherent complexities that characterise the sector. This research coordinated by the Egmont Institute and undertaken in support of the KPCS Working Group on Alluvial/Artisanal Producers (currently chaired by Angola), involved many of the leading thinkers in this field. It makes a significant contribution to our knowledge on the sector, laying the foundations for a concerted work programme. This study does not underestimate the challenges this sector poses. However, it emphasises the critical importance of this task because the integrity of the KPCS and all it stands for are dependent upon addressing the developmental dimensions of the diamond trade not just policing it.
Download or read book The Diamond Mines of South Africa written by Gardner Fred Williams and published by . This book was released on 1902 with total page 838 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Marine Mineral Deposits written by David Spencer Cronan and published by Routledge. This book was released on 2017-10-19 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook summarizes the main advances in our understanding of marine minerals and concentrates on the deposits of proven economic potential. In cases where our knowledge may be too limited to allow defining of their economic potential, those minerals are covered regionally or by deposit type. Handbook of Marine Mineral Deposits is divided into three sections; Marine placers, manganese nodules and crusts, and deep-sea hydrothermal mineralization. All of these mineral deposits have great potential importance to economic geologists and marine mines. Edited by an acknowledged expert in the field, this handbook includes work by internationally renowned contributors. The new United Nations Law of the Sea, ratified by over 100 countries within the past two years, provides a framework and guidelines for deep-sea mineral exploration that increases international interest in this book. The Handbook serves as a platform from which to launch the more detailed evaluation studies that will need to take place in the 21st century before recovery can continue or commence. Handbook of Marine Mineral Deposits is useful to mineralogists, economic geologists, marine geologists, marine miners, and conservationists. Features
Download or read book Impacts of artisanal gold and diamond mining on livelihoods and the environment in the Sangha Tri National Park landscape written by Tieguhong Julius Chupezi and published by CIFOR. This book was released on 2009 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Visit to Sydney and the Cudgegong Diamond Mines With a map written by Angus MACKAY (M.L.A.) and published by . This book was released on 1870 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diamond Genesis Mineralogy and Geochemistry written by Karen Smit and published by Walter de Gruyter GmbH & Co KG. This book was released on 2023-05-03 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diamond is the record-setter in many mineralogical properties such as hardness, diffusivity, thermal conductivity, purity, and covalency of bonding. Similarly, diamond, as the premier gemstone of the mantle holds primacy for geological features such as age and depth of origin. Diamond was among the first crystalline structures to be solved by X-ray diffraction and the first materials measured for their Raman spectrum. At more than 80 billion USD in yearly commercial value, diamond sets the record for the most traded, valuable mineral on the planet. Despite its chemical simplicity, diamond has been the object of more research effort, and had more scientific and popular press pages written about it, than any other mineral.
Download or read book Industrial Diamond written by Henry P. Chandler and published by . This book was released on 1964 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Diamond Fields of Southern Africa written by Percy Albert Wagner and published by . This book was released on 1914 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geoscience and Exploration of the Argyle Bunder Diavik and Murowa Diamond Deposits written by Andy T. Davy and published by . This book was released on 2018 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Diamond Deposits of the Gold Coast with Notes on Other Diamond Deposits in West Africa written by Norman Ross Junner and published by . This book was released on 1943 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Black Diamond Mines Regional Preserve written by Traci Parent and published by Arcadia Publishing. This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the 1860s to the turn of the 20th century, the Mount Diablo Coal Field was the largest coal-producing region in California and once boasted five thriving communities. With the decline of coal mining some residents turned to ranching. Later rich deposits of sand were mined for glass and foundry use. In 1973, the East Bay Regional Park District acquired the land. Today visitors to Black Diamond Mines Regional Preserve, located 45 miles east of San Francisco, can explore miles of trails, tour the Hazel-Atlas silica sand mine, and visit historic Rose Hill Cemetery.
Download or read book Diamond Deposits written by Minh Chi Ngo and published by . This book was released on 2016-08-01 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The diamond is the hardest natural substance known. It is found in a type of igneous rock known as kimberlite. The diamond itself is essentially a chain of carbon atoms that have crystallized. The stone's unique hardness is a result of the densely concentrated nature of the carbon chains. Like other igneous rocks, kimberlite was formed over the course of thousands of years by volcanic action that occurred during the formation of the earth's crust. It is thought that diamonds were first discovered in India about 6,000 years ago in the riverbeds of the region. India was the only known source of the rocks for over a thousand years, until they were unearthed in Borneo around A.D. 600. During the Middle Ages, the diamond was overshadowed by some of the more colorful gems like the ruby and emerald. In the 18th century, diamond deposits were discovered in Brazil in small quantities, and later in Australia, Russia, and the United States. Block caving is the most commonly used method in excavating diamonds from kimberlite deposits. This method offers the highest yield and thus is the most cost effective. In the crushing operation, which occurs in the below-ground mining facilities, large chunks of kimberlite are broken up into more easily transportable segments. Diamonds will continue to be used in industry and hightechnology enterprises, but synthetically produced facsimiles--first manufactured in 1953--may accomplish some of the tasks originally the exclusive province of the real stone. These ""manufactured"" gems have the same properties of hardness and durability, and while they will never be as popular as the real diamond for adomment purposes, they are well suited for industrial applications.This book provides comprehensive overview on origin, exploration, and history of diamond.
Download or read book Diamonds in Arkansas written by Arkansas Diamond Company and published by . This book was released on 1908 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book When Did Plate Tectonics Begin on Planet Earth written by Kent C. Condie and published by Geological Society of America. This book was released on 2008-01-01 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Inspired by a GSA Penrose Conference held in Lander, Wyoming, June 14-18, 2006, this volume discusses the beginning and evolution of plate tectonics on Earth, and gives readers an introduction to some of the uncertainties and controversies related to the evolution of the planet. In the first three sections of the book, which cover isotopic, geochemical, metamorphic, mineralization, and mantle geodynamic constraints, a variety of papers address the question of when "modern-style" plate tectonics began on planet Earth. The next set of papers focuses on the geodynamic or geophysical constraints for the beginning of plate tectonics. The volume's final section synthesizes a broad range of evidence, from planetary analogues and geodynamic modeling, to Earth's preserved geologic record. This work provides an excellent graduate level text summarizing the current state of knowledge and will be of interest to a wide range of earth and planetary scientists."--Publisher's website.
Download or read book Diamond Smuggling and Taxation in Sub Saharan Africa written by Nienke Oomes and published by International Monetary Fund. This book was released on 2003-08-01 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper provides an overview of diamond mining in sub-Saharan African countries, and explores the reasons for substantial differences in their tax rates and fiscal revenues from the sector, which mainly arise from differences in the incentives for smuggling. In a theoretical model, we show that optimal diamond tax rates increase with the degree of competition among diamond buyers, as well as with the corporate share of diamond production, which is confirmed by the data. We then discuss policies to increase revenue, including by enhancing mining productivity, stimulating the exploration of new areas, reducing barriers to entry, and attracting investment into value-adding downstream operations.
Download or read book Mineral Deposits and Earth Evolution written by Geological Society of London and published by Geological Society of London. This book was released on 2005 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mineral deposits are not only primary sources of wealth generation, but also act as windows through which to view the evolution and interrelationships of the Earth system. Deposits formed throughout the last 3.8 billion years of the Earth's history preserve key evidence with which to test fundamental questions about the evolution of the Earth. These include: the nature of early magmatic and tectonic processes, supercontinent reconstructions, the state of the atmosphere and hydrosphere with time, and the emergence and development of life. The interlinking processes that form mineral deposits have always sat at the heart of the Earth system and the potential for using deposits as tools to understand that evolving system over geological time is increasingly recognized. This volume contains research aimed both at understanding the origins of mineral deposits and at using mineral deposits as tools to explore different long-term Earth processes.
Download or read book Mineral Resources written by Manuel Bustillo Revuelta and published by Springer. This book was released on 2017-08-23 with total page 653 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive textbook covers all major topics related to the utilization of mineral resources for human activities. It begins with general concepts like definitions of mineral resources, mineral resources and humans, recycling mineral resources, distribution of minerals resources across Earth, and international standards in mining, among others. Then it turns to a classification of mineral resources, covering the main types from a geological standpoint. The exploration of mineral resources is also treated, including geophysical methods of exploration, borehole geophysical logging, geochemical methods, drilling methods, and mineral deposit models in exploration. Further, the book addresses the evaluation of mineral resources, from sampling techniques to the economic evaluation of mining projects (i.e. types and density of sampling, mean grade definition and calculation, Sichel’s estimator, evaluation methods – classical and geostatistical, economic evaluation – NPV, IRR, and PP, estimation of risk, and software for evaluating mineral resources). It subsequently describes key mineral resource exploitation methods (open pit and underground mining) and the mineral processing required to obtain saleable products (crushing, grinding, sizing, ore separation, and concentrate dewatering, also with some text devoted to tailings dams). Lastly, the book discusses the environmental impact of mining, covering all the aspects of this very important topic, from the description of diverse impacts to the environmental impact assessment (EIA), which is essential in modern mining projects.
