Geochemistry, Mineralogy and Genesis of Gold DepositsThe 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. |
Contents
SYSTEMATISATION OF GOLD DEPOSITS 1 279 | 1 |
Basic Principles of Classification | 7 |
GEOCHEMICAL CHARACTERISTICS OF GOLD | 37 |
Gold in Sedimentary Metamorphic and Metasomatic Rocks | 56 |
Gold in Water and Aqueous Solutions | 63 |
MINERALOGY OF GOLD | 69 |
Gold and Its Alloys | 77 |
Simple Intermetallic Compounds of Gold | 88 |
Experimental Study of AuSbS and AuFeSbS Systems under | 159 |
Cosolubility of Gold and Antimony in Sulphide Solutions and Problem | 170 |
Phase Relations in AuAgSbS System | 179 |
Mineral Parageneses and Phase Relations in AuPbBiS System | 185 |
SULPHIDEARSENIDE DEPOSITS AND PHASE RELATIONS | 201 |
Solubility of Gold in AuAsH2S0 1 N HCI System at 200 and 300 C | 207 |
PHASE RELATIONS IN SELENIDE AND TELLURIDE SYSTEMS | 217 |
Phase Relations in OxideSulphideTelluride Systems | 241 |
Complex Intermetallic Compounds of Gold with Te Pb Fe and Cu | 97 |
Gold Tellurides and Sulphotellurides | 111 |
Gold Oxides and Hydroxides | 118 |
Hightemperature Solubility of Gold in Aqueous Vapour Phase | 124 |
Solubility of Gold in Hightemperature Chloride Solutions | 131 |
Geochemical and Physicochemical Factors of Gold Concentration | 137 |
Characteristics of SelenideTelluride Ratios in Ore Systems | 252 |
GENETIC FEATURES OF GOLD DEPOSITS | 264 |
Sources of Ore Matter and Diversity of Mineral Composition in Gold | 276 |
Forms of Migration and Methods of Gold Concentration | 288 |
CONCLUSIONS | 307 |
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Common terms and phrases
acidic alkaline andesite antimony arsenic arsenopyrite auriferous aurostibite AuSb2 Author's data berthierite bilibinskite bismuth bismuthine black shale bodies calaverite carbonaceous chalcopyrite characteristic chemical affinity chloride complex composition concentration constituents containing diagram diorite equilibrium experimental finely dispersed fluids fo₂ formation galena genetic geochemical Geochemistry Geol gold content gold deposits gold mineralisation gold solubility gold-bearing gold-quartz gold-silver Granites granitoids Granodiorites gudmundite high gold host rocks hydrothermal hydrothermal solutions inclusions intrusives kimberlites krennerite magmatic magnetite maldonite massif metals metamorphic metasomatic mg/ton mineral associations mineral types mole/kg water Moscow Nekrasov North-eastern Russia ore-forming system oxides paragenesis parameters petzite phase relations polymetallic pyrite pyrrhotite quartz range reaction regions S₂ Se₂ selenides selenium silver skarn solubility of gold sphalerite SSSR stable studied sulphide sulphide solutions sulphide sulphur sulphosalts Table Te₂ tellurides tellurium temperature thermodynamic tion veins volcanic Yakutia zones