Download or read book Geochemistry of Gold in the Weathering Cycle written by Hubert William Lakin and published by . This book was released on 1974 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the solubilization of gold by the formation of chloride, bromide, iodide, thiosulfate, thiocyanide, and cyanide gold complexes and related topics.
Download or read book Geochemistry of Gold in the Weathering Cycle written by Geological Survey (U.S.) and published by . This book was released on 1969 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry of gold in the weathering cycle written by Hubert W. Lakin and published by . This book was released on 1974 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry of Gold in the Weathering Cycle written by Donal Ray Mullineaux and published by . This book was released on 1974 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry of Gold in the Weathering Cycle a Study of the Solubilization of Gold by the Formation of Chloride Bromide Iodide Thiosulfate Thiocyanide and Cyanide Gold Complexes and Related Topics written by Geological Survey (U.S.) and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Geology and Resources of Gold and Geochemistry of Gold written by Daniel R. Shawe and published by . This book was released on 1988 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geochemistry Mineralogy and Genesis of Gold Deposits written by I.Y. Nekrasov and published by Routledge. This book was released on 2018-05-02 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The behaviour of gold in sedimentary, magmatic and postmagmatic processes are studied and 40 gold-bearing minerals including ten which were recently discovered are described. The results are presented of new experimental studies on phase relations in gold-sulphide systems. The solubility & form of gold migration in high-temperature chloride, sulphide and arsenic solutions are determined. Based on the new data, the genesis of gold deposits is studied and a geochemical classification proposed. This book is designed for specialists in the field of gold chemistry, geochemistry and mineralogy and for field geologists surveying and prospecting for gold.
Download or read book Selected Annotated Bibliography on the Geochemistry of Gold written by Margaret Cooper and published by . This book was released on 1971 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approximately 200 references dealing with the genesis and geochemistry of gold and with geochemical prospecting for gold deposits.
Download or read book Gold geochemistry in a semiarid weathering environment written by Paulo Marcos de Paula Vasconcelos and published by . This book was released on 1987 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold metallogeny and exploration written by R. P. Foster and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: Within the last decade, the high and continuing demand for gold has prompted a global gold rush on a scale never before seen, not even in the heady days of Ballarat, California and the Yukon. Gold is being sought on every continent and, with very few exceptions, in every country around the world. Such interest and fierce competition has demanded considerable innovation and improvement in exploration techniques paralleled by a rapid expansion of the geological database and consequent genetic modelling for the many different types of gold deposits now recognized. This proliferation of data has swamped the literature and left explorationist and academic alike unable to sift more than a small proportion of the accumulating information. This new book represents an attempt to address this major problem by providing succinct syntheses ofall major aspects ofgold metallogeny and exploration, ranging from the chemical distribution of gold in the Earth's crust, and the hydrothermal chemistry of gold, to Archaean and Phanerozoic lode deposits, epithermal environments, chemical sediments, and placer deposits, and culminates in chapters devoted to geochemical and geophysical exploration, and the economics of gold deposits. Each chapter is written by geoscientists who are acknowledged internationally in their respective fields, thus guaranteeing a broad yet up-to-date coverage. In addition, each chapter is accompanied by reference lists which provide readers with access to the most pertinent and useful publications.
Download or read book The Aqueous Chemistry of Gold in the Weathering Environment written by D. J. Gray and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gold written by Boyle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: GOLD: History and Genesis of Deposits is the product of an effort by the Society of Economic Geologists to publish materials that will expand knowl edge concerning timely, specific topics important to the study of economic geology and to economic geologists. A volume on gold was selected for a general review-type publication because of the importance of the gold mining industry in the 1980s. The officers and council of the Society of Economic Geologists authorized the preparation of this book on gold in 1981, and Dr. Robert W. Boyle was selected as its author. Dr. Boyle has extensive experience in the study of gold deposits. He has an international reputation and a broad interest and understanding of the gold mining industry, the origin of gold deposits, and the history of gold as a metal and ore from prehistoric times to recent. Dr. Boyle uses important publications on gold deposits as source materials to document the various pathways of geological thought over time to introduce the reader to modern concepts. The book contains a wealth of information concerning gold.
Download or read book Geochemistry of Gold Deposits in the Abitibi Greenstone Belt written by R. Kerrich and published by . This book was released on 1983 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of Petroleum Exploration Success and the Effects of Resource Base Exhaustion Via a Simulation Model written by Lawrence J. Drew and published by . This book was released on 1974 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biogeochemical Cycling of Gold Under Surface and Near surface Environmental Conditions written by Jeremiah P. Shuster and published by . This book was released on 2013 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mobility of gold at near-surface environmental conditions, e.g., supergene weathering environments, lateritic weathering systems, saline to hypersaline systems and placer gold environments, takes place as oxidised, soluble gold complexes and as reduced elemental gold. The transformation between aqueous and solid states of gold is attributed to the varying geochemical conditions that occur in dynamic environments that are catalysed in part by the biosphere. The primary focus of this research is the investigation of biogeochemical processes that contribute to the cycling of gold using laboratory models to represent various natural systems including chemolithotrophic bacteria, e.g., iron-oxidising bacteria, and heterotrophic sulphate-reducing bacteria and nitrifying bacteria. Results from these studies demonstrate that bacteria initiate the gold cycle by liberating gold through the chemical weathering of gold-bearing minerals. Through oxidative-complexation, soluble gold complexes, e.g., gold (I) thiosulphate and gold (III) chloride, could be produced; however, destabilisation of these gold complexes coupled with bioprecipitation and biomineralisation can immobilise gold thereby completing the cycle. Since the biosphere has an influence on the geochemical conditions of natural environments, the duration of the mobility of gold as soluble complexes is finite and represents a brief snap shot of gold's occurrence. Therefore under surface and near-surface environmental conditions gold will predominantly occur as secondary gold. Secondary gold occurs as nanometre-size to micrometre-size colloids, octahedral platelets, euhedral crystals and bacteriomorphic structures. Furthermore, when bacteria develop as a structurally cohesive biofilms, reduction and enrichment of gold can occur and produce macroscopic gold structures including foils, grains and nuggets. Therefore, bacteria can have a profound effect on the occurrence of gold in natural environments as long as nutrients necessary for microbial metabolism are sustained and gold is in the system. The direct and indirect biogenic effects on gold biogeochemistry will persist over geological time forming observed anomalous gold concentrations such as nugget formations and supergene gold enrichment. Characterising the morphology of gold grains and nuggets in association with understanding how biogeochemical conditions contribute to gold immobilisation is important for gold exploration as it has practical application in mineral vectoring.
Download or read book Geological Survey Bulletin written by and published by . This book was released on 1974 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1975 with total page 2834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
