Geology Mineralogy And Geochemistry Of Gold Bearing Polymetallic Sulfide Quartz Veins And Associated Intrusions In The French Gulch Deadwood District California
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Geology Mineralogy And Geochemistry Of Gold Bearing Polymetallic Sulfide Quartz Veins And Associated Intrusions In The French Gulch Deadwood District California
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Author : Lutz Geissler
language : en
Publisher:
Release Date : 2009
Geology Mineralogy And Geochemistry Of Gold Bearing Polymetallic Sulfide Quartz Veins And Associated Intrusions In The French Gulch Deadwood District California written by Lutz Geissler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Geochemistry categories.
Freiberger Forschungshefte
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Author :
language : de
Publisher:
Release Date : 2009
Freiberger Forschungshefte written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Geology categories.
Layered Intrusions
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Author : Bernard Charlier
language : en
Publisher: Springer
Release Date : 2015-05-18
Layered Intrusions written by Bernard Charlier and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-18 with Science categories.
This edited work contains the most recent advances related to the study of layered intrusions and cumulate rocks formation. The first part of this book presents reviews and new views of processes producing the textural, mineralogical and geochemical characteristics of layered igneous rocks. The second part summarizes progress in the study of selected layered intrusions and their ore deposits from different parts of the world including Canada, Southwest China, Greenland and South Africa. Thirty experts have contributed to this update on recent research on Layered Intrusions. This highly informative book will provide insight for researchers with an interest in geology, igneous petrology, geochemistry and mineral resources.
The Mineralogy Petrology And Geochemistry Of The Uranium Bearing Vein Deposits Near Boulder Montana And Their Relationship To Faulting And Hot Spring Activity
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Author : Stanton Parker Dodd
language : en
Publisher:
Release Date : 1981
The Mineralogy Petrology And Geochemistry Of The Uranium Bearing Vein Deposits Near Boulder Montana And Their Relationship To Faulting And Hot Spring Activity written by Stanton Parker Dodd and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Faults (Geology) categories.
Three "siliceous reef" uraniferous vein deposits of the Boulder batholith were studied. Two of these, the Free Enterprise and the W. Wilson, occur within hydrothermally altered Late Cretaceous Butte Quartz Monzonite and related rocks. Both deposits contain fine-grained iron and base-metal sulfides and uraninite in a matrix of microcrystalline quartz and chalcedony. The deposition of uraninite in these veins was contemporaneous with the majority of the sulfide minerals. The third deposit studied, the uraniferous Red Rock Mine, is similar in many respects to the other two occurrences, yet occurs within altered Late Cretaceous Elkhorn Mountains Volcanics. All three occurrences formed under physical and chemical conditions similar to those of present day hot springs near Boulder, Montana. Hydrothermal alteration products and precipitate mineralogy (including uraniferous carbonates) of these hot springs are similar to those found associated with the veins. An estimated hot spring subsurface temperature of around 150°C is considered a reasonable maximum for vein formation. At this temperature the pH-f02 conditions at the time of deposition suggest vein formation either by (1) boiling of an ascending hydro- thermal solution, or (2) mixing of a hydrothermal solution with ground water. The first method is favored for the formation of the Boulder Hot Springs uraniferous precipitates and the Red Rock Mine deposit; and is supported by the presence of adularia and calcite at both occurrences. Vein mineralogy and phase relationship studies relating to the Free Enterprise and W. Wilson deposits suggest vein formation by the mixing of two solutions: (1) an iron, base-metal, sulfide-rich, reducing, hot-spring solution, and (2) a cooler, oxidizing uranium-enriched solution. Potential sources of leachable uranium for the vein deposits are the Boulder batholith and the Oligocene post-Lowland Creek volcanics. Pb206 /U283 age dates of 45 ± 10 m.y. on ore samples from the W. Wilson suggest that the overlying, locally uranium-enriched, volcanics were the main supplier of uranium for the Free Enterprise and W. Wilson vein deposits. Lead isotope data indicate that the lead associated with these two deposits was derived from the leaching of Butte Quartz Monzonite rocks by circulating meteoric waters with subsequent incorporation into hot spring systems. The apparent age of deposition at the Red Rock Mine (50-70 m.y.) points to the Boulder batholith rocks as the uranium source.
Gold Bearing Polymetallic Veins And Replacement Deposits
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Author : Hal T. Morris
language : en
Publisher:
Release Date : 1990
Gold Bearing Polymetallic Veins And Replacement Deposits written by Hal T. Morris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Gold ores categories.
Gold And Other Precious Metals
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Author : Claudia Gasparrini
language : en
Publisher: Springer
Release Date : 2011-12-16
Gold And Other Precious Metals written by Claudia Gasparrini and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-12-16 with Science categories.
A view of gold and other precious metal extractions from a new and wider angle, taking in both the earth and the metallurgical sciences. To name but a small number of the topics covered: - Occurrences of gold and silver minerals in their ores - Photomicrographs of refractory and amenable minerals/ores - The use of irregular gold and silver distributions for efficient planning of the extraction process - Microanalytical techniques - Descriptions of uranium and many base metals for comparison. Written with a broad audience in mind, from the manager of operations to the metallurgist, for the field geologist or other earth scientist, and for the professor and student alike.
Gold Metallogeny And Exploration
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Author : R. P. Foster
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Gold Metallogeny And Exploration written by R. P. Foster and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
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.
Atlas Of Economic Mineral Deposits
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Author : Colin J. Dixon
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Atlas Of Economic Mineral Deposits written by Colin J. Dixon and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
reader who wishes to study economic mineral deposits. I have in mind that it they do include references to the source material. Full bibliographies are in could be the basic descriptive part of a university course on the subject. many cases unnecessary because of the monumental work of Ridge (Ridge, Many teachers of economic and mining geology prefer to lecture on the 1972 and 1976). formative geological processes and origin of mineral deposits, and most of The Scope, Purpose and Layout of the Book Terminology. This is a persistent problem in geology. What I have tried to the existing textbooks do likewise. The Atlas is intended to be a compen Air, sea, surface water and soil support life, from which comes our food; the dium of descriptive material on which a more analytical series of lectures, or do is use a consistent, and internationally acceptable set of terms, making as much use as possible of the recent attempts by international organizations to fossil remains of life, that is: coal, oil and gas, together with solar and course of reading, could be based.
Quarterly Of The Colorado School Of Mines
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Author :
language : en
Publisher:
Release Date : 1966-10-04
Quarterly Of The Colorado School Of Mines written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966-10-04 with Geology categories.
Skarns In British Columbia
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Author : Gerald E. Ray
language : en
Publisher:
Release Date : 1997
Skarns In British Columbia written by Gerald E. Ray and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Science categories.
Skarns in British Columbia have historically been important sources of iron, tungsten, copper, and gold. This publication begins with an introduction on skarn terminology and the problems of skarn identification. It then reviews a genetic model of skarn formation and presents descriptive profiles of eight types of skarn deposits; describes the database of at least 735 skarn occurrences in the province, and the number and distribution of skarns in British Columbia according to their associations, class, age, and distribution; and notes the ages of British Columbia skarns and the total production of various metals extracted from British Columbia skarns. Subsequent sections provide information on assays and metal ratios of mineralized skarns, skarn mineralogy, skarn mineral chemistry, chemistry of skarn-related intrusions, and the mapping and evaluation of skarns. The appendix contains a listing of 735 skarn occurrences in British Columbia, giving deposit name, MINFILE number, latitude/longitude, elements and minerals present, and associated rocks and their ages.