Gold and Other Precious Metals
From Ore to Market
(Sprache: Englisch)
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 -...
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Klappentext zu „Gold and Other Precious Metals “
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.
Inhaltsverzeichnis zu „Gold and Other Precious Metals “
I.- 1 The mineral industry - Present state of the art.- 2 Reasons for poor planning of precious metal recoveries.- 3 Market value and other variables affecting recovery decisions and recovery costs.- Metal geochemistry.- Ore chemistry.- Rock types - Physical character of host rock.- Mineralogy/ore microcomposition.- Metal-bearing minerals.- Chemical composition of the metal-bearing mineral.- Grain size of the metal-bearing mineral.- Host minerals and mineral associations.- Minerals other than the host mineral.- Mineral stability.- 4 Methods and techniques for the study of ores.- The microanalytical techniques.- The ore microscope.- The electron microprobe.- The scanning electron microscope (SEM).- Choice and preparation of samples.- Incorrect approach.- Basic steps for the study of metal distributions.- Misconception.- Applications.- Use of the microprobe preferable to that of the EDS-SEM.- Use of the EDS-SEM preferable to that of the microprobe.- 5 General principles of mineral processing.- Comminution.- Physical separation.- Hand sorting.- Gravity concentration.- Magnetic separation.- Flotation.- Other techniques.- Ores to which little beneficiation is applied.- Sintering and pelletizing.- Roasting.- Oxidation.- Chlorination.- Reduction.- Sulfation and sulfidation.- Chemical separation.- Leaching.- Solid-liquid separation.- Solution purification and concentration.- Smelting.- Casting.- Recovery from solutions - Refining.- Precipitation.- Electrolysis.- Evaporation and crystallization.- Refining.- II.- 6 Gold.- Market value.- Geochemistry.- Fire assay.- Rock types hosting gold.- Ore microcomposition.- Gold-bearing minerals.- Native gold and electrum.- The other gold-bearing minerals.- Grain size.- Host minerals.- Pyrite.- Arsenopyrite.- Realgar and orpiment.- Chalcopyrite.- Secondary copper minerals.- Other sulfides and sulfosalts.- Oxides of iron.- Uranium minerals.- Quartz, silicates, carbonates and sulfates.- Carbonaceous material (graphite/carbon).- Sands and
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gravels (placer gold).- Mineral associations.- Minerals other than the host mineral.- Mineral stability.- Method of study.- Metallurgy.- Rock types hosting gold.- Gold-bearing minerals.- Native gold and low-silver electrum.- High-silver electrum.- Tellurides.- Other gold-bearing minerals.- Grain size and mineral associations.- Host minerals.- Pyrite.- Arsenopyrite.- Realgar and orpiment.- Chalcopyrite and secondary copper minerals.- Pyrrhotite.- Marcasite.- Galena and other lead minerals.- Sphalerite.- Stibnite and antimony sulfosalts.- Other sulfides and sulfosalts.- Oxides of iron (and other oxidized minerals).- Uranium minerals.- Quarts, silicates, carbonates and sulfates.- Carbonaceous material.- Sands and gravels (placer gold).- Minerals other than the host mineral.- Cyanicides.- Clay and sericite.- Carbonaceous material (graphite and carbon).- Mercury minerals.- Discussion and conclusions.- 7 Silver.- Market value.- Geochemistry.- Rock types hosting silver.- Ore microcomposition.- Silver-bearing minerals.- Native silver.- Electrum and kustelite.- Acanthite - Argentite.- Pyrargyrite - Proustite.- Tetrahedrite - Tennantite.- Polybasite, perceite and stephanite.- Stromeyerite.- Cerargyrite and the other silver halides.- Argentojarosite and argentian plumbojarosite.- Manganese minerals.- Other minerals in which silver is a minor constituent.- Grain size.- Host minerals.- Mineral associations.- Mineral stability.- Method of study.- Metallurgy.- Rock types hosting silver.- Silver-bearing minerals.- Native silver, electrum, acanthite, cerargyrite and secondary copper minerals.- Tetrahedrite - Tennantite.- Manganese minerals.- Other silver minerals.- Grain size and host minerals.- Minerals other than the host mineral.- Mineral stability.- Discussion and conclusions.- 8 Differences between gold and silver and their effects on recoveries.- 9 Platinum group elements.- Ruthenium.- Rhodium.- Palladium.- Osmium.- Iridium.- Platinum.- Market value.- Geochemistry.- Rock types hosting the platinum group elements.- Ore microcomposition.- Method of study.- Metallurgy.- 10 Uranium.- Market value.- Geochemistry.- Rock types hosting uranium.- Ore microcomposition.- Uranium-bearing minerals.- Uraninite-pitchblende.- Secondary products after uraninite-pitchblende.- Coffinite.- Complex multiple oxides.- Uranothorite.- Thucholite.- Miscellaneous accessory minerals.- Grain size, host minerals and mineral associations.- Minerals other than the host mineral.- Mineral stability.- Method of study.- Metallurgy.- The primary uranium minerals.- The secondary products.- The complex multiple oxides.- 11 Base metals.- Method of study.- Beryllium.- Mineralogy.- Metallurgy.- Boron.- Mineralogy.- Metallurgy.- Carbon.- Mineralogy.- Metallurgy.- Magnesium.- Mineralogy.- Metallurgy.- Aluminum.- Mineralogy.- Metallurgy.- Potassium.- Mineralogy.- Metallurgy.- Titanium.- Mineralogy.- Metallurgy.- Chromium.- Mineralogy.- Metallurgy.- Manganese.- Mineralogy.- Metallurgy.- Iron.- Mineralogy.- Metallurgy.- Cobalt.- Mineralogy.- Metallurgy.- Nickel.- Mineralogy.- Metallurgy.- Copper.- Mineralogy.- Metallurgy.- Lead and zinc.- Mineralogy.- Metallurgy.- Arsenic.- Mineralogy.- Metallurgy.- Niobium and tantalum.- Mineralogy.- Metallurgy.- Molybdenum.- Mineralogy.- Metallurgy.- Tin.- Mineralogy.- Metallurgy.- Antimony.- Mineralogy.- Metallurgy.- Barium.- Mineralogy.- Metallurgy.- Rare earths.- Mineralogy.- Metallurgy.- Tungsten.- Mineralogy.- Metallurgy.- Mercury.- Mineralogy.- Metallurgy.- Bismuth.- Mineralogy.- Metallurgy.- Recent Diamond Discoveries.- 12 Mineral exploration.- Determination of the origin of a mineralization.- Evaluation of a deposit.- Conclusions.- Glossary of Minerals, Rocks and Geological Terms.- References.
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Bibliographische Angaben
- Autor: Claudia Gasparrini
- 2011, Softcover reprint of the original 1st ed. 1993, XXI, 336 Seiten, Maße: 19,3 x 27 cm, Kartoniert (TB), Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3642771866
- ISBN-13: 9783642771866
Sprache:
Englisch
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