Placer Gold Deposits of Nevada (Classic Reprint)

Placer Gold Deposits of Nevada (Classic Reprint)

Author: Maureen G. Johnson

Publisher: Forgotten Books

Published: 2017-11-18

Total Pages: 146

ISBN-13: 9780331313765

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Excerpt from Placer Gold Deposits of Nevada Following the discovery of placers at Gold Canyon, placer discoveries in Nevada were broadly in three periods: the 1860's to 1880's, when many small deposits throughout the State were discovered and sporadically worked and several large placers were discovered and extensively worked; the short period between 1906 and 1910, when very rich placers were dis covered at Lynn, Battle Mountain, Manhattan, and Round Mountain; the early 1930's, when economic conditions created by the depression caused a renewed interest in placer mining, and many individuals sought, and a few discovered, new placer areas throughout the State. The location of the placers described in this report is shown on plate 1. Very little factual information can be found about the early periods of placer mining in Nevada. For many placers, the only reports available are hearsay estimates of production and speculations about the extent of the placer ground based on remnants of placer pits, shafts, and other workings. Many of the placers said to have had a high production between 1860 and 1890 were worked by Chinese miners who came to Nevada dur ing the building of the railroads and stayed on to work at mining and other activities. The Chinese were reputed to be secretive with their earnings from the placers and did not ship the gold to the mint by Wells Fargo or other shippers. They worked the gravels very thoroughly in areas where American miners did not wish to expend great labor to win the gold. The placers in the Sierra and Spring Valley districts, Pershing County, were worked by Chinese miners; they have a very high estimated production before 1900 and a comparatively low known production since that time. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.


Formation of Gold Deposits

Formation of Gold Deposits

Author: Neil Phillips

Publisher: Springer Nature

Published: 2022-06-16

Total Pages: 294

ISBN-13: 981163081X

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This book addresses the origin of gold deposits to answer questions of science and curiosity. These answers contribute in turn to the improved exploration and mining of gold. Initially there is a summary of the methods used to address the genesis of gold deposits including some of the essential science and concepts. Five basic observations follow that apply to many gold deposits and need to be considered in any genetic ideas. Magmatic processes enriching gold are discussed followed by the role of aqueous fluids during gold deposit formation at elevated temperatures and pressures. Modifying effects after deposit formation include high-grade metamorphism, retrogression, weathering, and erosion. The main types of gold deposits are then explained within the spectrum of viable genetic ideas, with informal names for these examples that include gold-only, gold-plus, Carlin, slate-belt, epithermal, porphyry, iron oxide copper gold, and Archean greenstone. Case histories are included in which the role of gold geology contributed directly to discoveries—one example is at the province-scale and another at the goldfield-scale. Unlike other books on the subject, this one addresses virtually all gold deposit types rather than focusing on one type in isolation. The primary readership includes industry geologists, senior undergraduates, postgraduates, and those with some knowledge of science and an interest in the gold industry.


Lost Butte, Montana

Lost Butte, Montana

Author: Richard I. Gibson

Publisher: Arcadia Publishing

Published: 2012-07-10

Total Pages: 156

ISBN-13: 1614238197

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From the stately Queen Anne mansions of the West Side to the hastily constructed shanties of Cabbage Patch, Lost Butte, Montana traces the citys history through its architectural heritage. This book includes such highlights as the Grand Opera House, once graced by entertainers and cultural icons like Charlie Chaplin, Sarah Bernhardt and Mark Twain; the infamous brothels protested by reformer Carrie Nation, wielding her hatchet and sharp tongue; and the Columbia Gardens, built by copper king William Clark as a respite from the smoke and toil of the mines and later destroyed by fire. Through the stories of these structures, lost to the march of time and urban renewal, historian Richard Gibson recalls the boom and bust of Butte, once a mining metropolis and now part of the largest National Historic Landmark District.


Going for Gold

Going for Gold

Author: Jack H. Morris

Publisher: University of Alabama Press

Published: 2010-05-10

Total Pages: 417

ISBN-13: 0817316779

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Details how Newmont Mining revolutionized the gold mining industry and remains the second largest gold miner in the world Jack H. Morris asserts that Newmont is the link between early gold mining and today’s technology-driven industry. We learn how the company’s founder and several early leaders grew up in gold camps and how, in 1917, the company helped finance South Africa’s largest gold company and later owned famous gold mines in California and Colorado. In the 1960s the company developed the process to capture “invisible gold” from small distributions of the metal in large quantities of rock, thereby opening up the rich gold field at Carlin, Nevada. Modern gold mining has all the excitement and historic significance of the metal’s colorful past. Instead of panning for ready nuggets, today’s corporate miners must face heavy odds by extracting value from ores containing as little as one-hundredth of an ounce per ton. In often-remote locations, where the capital cost of a new mine can top $2 billion, 250-ton trucks crawl from half mile deep pits and ascend, beetle-like, loaded with ore for extraction of the minute quantities of gold locked inside. Morris had unique access to company records and the cooperation of more than 80 executives and employees of the firm, but the company exercised no control over content. The author tells a story of discovery and scientific breakthrough; strong-willed, flamboyant leaders like founder Boyce Thompson; corporate raiders such as T. Boone Pickens and Jimmy Goldsmith; shakedowns by the Indonesian government and monumental battles with the French over the richest mine in Peru; and learning to operate in the present environmental regulatory climate. This is a fascinating story of the metal that has ignited passions for centuries and now sells for over $1,000 an ounce.


Ore Deposits

Ore Deposits

Author: Sophie Decrée

Publisher: John Wiley & Sons

Published: 2019-04-23

Total Pages: 272

ISBN-13: 1119290538

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The latest knowledge on mineral ore genesis and the exploration of ore deposits Global demand for metals has risen considerably over the past decade. Geologists are developing new approaches for studying ore deposits and discovering new sources. Ore Deposits: Origin, Exploration, and Exploitation is a compilation of diverse case studies on new prospects in ore deposit geology including atypical examples of mineral deposits and new methods for ore exploration. Volume highlights include: Presentation of the latest research on a range of ore deposit types Application of ore deposits to multiple areas of geology and geophysical exploration Emphasis on diverse methods and tools for the study of ore deposits Useful case studies for geologists in both academia and industry Ore Deposits: Origin, Exploration, and Exploitation is a valuable resource for economic geologists, mineralogists, petrologists, geochemists, mining engineers, research professionals, and advanced students in relevant areas of academic study. Read an interview with the editors to find out more: https://eos.org/editors-vox/developments-in-the-continuing-search-for-new-mineral-deposits


Understanding Mineral Deposits

Understanding Mineral Deposits

Author: Kula Misra

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 857

ISBN-13: 9401139253

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Mineral deposits have supplied useful or valuable material for human consumption long before they became objects of scientific curiosity or commercial exploitation. In fact, the earliest human interest in rocks was probably because of the easily accessible, useful (e. g. , red pigment in the form of earthy hematite) or valuable (e. g. , native gold and gemstones) materials they contained at places. In modem times, the study of mineral deposits has evolved into an applied science employing detailed field observations, sophisticated laboratory techniques for additional information, and computer modeling to build complex hypotheses. Understanding concepts that would someday help geologists to find new mineral deposits or exploit the known ones more efficiently have always been, and will continue to be, at the core of any course on mineral deposits, but it is a fascinating subject in its own right, even for students who do not intend to be professional economic geologists. I believe that a course on mineral deposits should be designed as a "capstone course" that illustrates a comprehensive application of concepts from many other disciplines in geology (mineralogy, stratigraphy and sedimentation, structure and tectonics, petrology, geochemistry, paleontology, geomorphology, etc. ). This book is intended as a text for such an introductory course in economic geology, primarily for senior undergraduate and graduate students in colleges and universities. It should also serve as a useful information resource for professional economic geologists.


Ore Deposit Geology

Ore Deposit Geology

Author: John Ridley

Publisher: Cambridge University Press

Published: 2013-07-04

Total Pages: 411

ISBN-13: 1107244765

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Mapping closely to how ore deposit geology is now taught, this textbook systematically describes and illustrates the major ore deposit types, linking this to their settings in the crust and the geological factors behind their formation. Written for advanced undergraduate and graduate students with a basic background in the geosciences, it provides a balance of practical information and coverage of the relevant geological sciences, including petrological, geochemical, hydrological and tectonic processes. Important theory is summarized without unnecessary detail and integrated with students' learning in other topics, including magmatic processes and sedimentary geology, enabling students to make links across the geosciences. Students are supported by further reading, a comprehensive glossary, and problems and review questions that test the application of theoretical approaches and encourage students to use what they have learnt. A website includes visual resources and combines with the book to provide students and instructors with a complete learning package.