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Author : James G. Black
Publisher : Unknown
Page : 618 pages
File Size : 54,6 Mb
Release : 1885
Category : Assaying
ISBN : STANFORD:36105025502647
Author : John Marsden,Iain House
Publisher : SME
Page : 688 pages
File Size : 53,9 Mb
Release : 2006
Category : Science
ISBN : 0873352408
Extensively revised and updated, this edition provides the broad base of knowledge required by all working in the gold extraction and gold processing industries. It bridges the gap between research and industry by emphasizing practical applications of chemical principles and techniques.
Author : James Gow Black
Publisher : Unknown
Page : 563 pages
File Size : 49,9 Mb
Release : 1885
Category : Assaying
ISBN : 1869643526
Author : Mineekshi Awasthi
Publisher : Unknown
Page : 0 pages
File Size : 52,6 Mb
Release : 2015-03
Category : Gold
ISBN : 1681174766
Gold extraction or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of small gold nuggets and flakes. Placer mining techniques since the mid to late 20th century have generally only been the practice of artisan miners. Hydraulic mining was used widely in the Californian gold rush, and involved breaking down alluvial deposits with high-pressure jets of water. Hard rock ores have formed the basis of the majority of commercial gold recovery operations since the middle of the 20th century where open pit and or sub-surface mining techniques are used.
Author : Baby Professor
Publisher : Speedy Publishing LLC
Page : 64 pages
File Size : 55,8 Mb
Release : 2017-04-15
Category : Juvenile Nonfiction
ISBN : 9781541921238
Everyone wants gold! It’s a high-value element that has plenty of uses. This book will discuss The Uses and Importance of Gold. Its pages has been specifically designed for kids aged 9-12 to capture their attention when reading. Use this book as an additional resource for learning one element at a time. Grab a copy today!
Author : Nathan Mercer
Publisher : Unknown
Page : 78 pages
File Size : 47,6 Mb
Release : 1853
Category : Gold
ISBN : NYPL:33433022325512
Author : James G Black
Publisher : Legare Street Press
Page : 0 pages
File Size : 51,6 Mb
Release : 2023-07-18
Category : Electronic
ISBN : 1021563978
Originally published in 1890, this book is a practical guide for miners and prospectors who want to improve their understanding of the chemical processes involved in mining and refining precious metals. Author James G. Black provides detailed explanations and step-by-step instructions for using various analytical tools to identify and extract gold, silver, and other minerals from ore. This book is a valuable resource for anyone interested in the history of mining or the science of metallurgy. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author : Anonim
Publisher : Unknown
Page : 498 pages
File Size : 49,8 Mb
Release : 1893
Category : Electronic
ISBN : NYPL:33433109847735
Author : Anonim
Publisher : Unknown
Page : 1130 pages
File Size : 44,8 Mb
Release : 1895
Category : Electronic
ISBN : BSB:BSB11546599
Author : B. Foster
Publisher : Springer Science & Business Media
Page : 659 pages
File Size : 46,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401121286
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 of all major aspects of gold 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.
Author : Thomas McElrath,William Jewett Tenney,William Phipps Blake
Publisher : Unknown
Page : 686 pages
File Size : 52,9 Mb
Release : 1853
Category : Metallurgy
ISBN : UOM:39015022641032
Author : Anonim
Publisher : Unknown
Page : 692 pages
File Size : 47,6 Mb
Release : 1853
Category : Mineral industries
ISBN : PSU:000052377808
Author : Neil Phillips
Publisher : Springer Nature
Page : 294 pages
File Size : 51,8 Mb
Release : 2022-06-16
Category : Science
ISBN : 9789811630811
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.
Author : R. Brough Smyth
Publisher : BoD – Books on Demand
Page : 686 pages
File Size : 54,5 Mb
Release : 2020-05-03
Category : History
ISBN : 9783846051382
Reprint of the original, first published in 1869.
Author : Luiz D.de Lacerda,Wim Salomons
Publisher : Springer Science & Business Media
Page : 168 pages
File Size : 40,7 Mb
Release : 2012-12-06
Category : Nature
ISBN : 9783642587931
Due to its inherent characteristics, mercury contamination from gold mining is a major environmental problem compared to past mercury contamination from industrial point sources. The worsening of social-economical conditions and increasing gold prices in the late 1970s resulted in a new rush for gold by individual entrepreneurs for whom Hg amalgamation is a cheap and easily carried out operation. Even after the present-day mining areas are exhausted, the mercury left behind will remain part of the biochemical cycle of the tropical forest. This book reviews the current information on mercury from gold mining, its cycling in the environment and its long-term ecotoxicological impact. The book is illustrated with numerous diagrams and photographs.
