Gold Mining: Proceedings of the International Conference on Gold Mining Technology, Beijing, China, 15-17 June 1993 |
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Page 19
... metamorphic process is pretty complicate , for the primary origin of gold are stemmed from the mantle and earth core . Under regional metamorphism , the higher the intensity of metamorphism , the lower the gold abundance . Take Jiapigou ...
... metamorphic process is pretty complicate , for the primary origin of gold are stemmed from the mantle and earth core . Under regional metamorphism , the higher the intensity of metamorphism , the lower the gold abundance . Take Jiapigou ...
Page 103
... metamorphic rock series of Geixian Formation are not only the occuring horrizon of orebodies , but also the main ore source bed of oreforming materials . 2. The effect of metamorphism and magmatism for mineralization . According to K ...
... metamorphic rock series of Geixian Formation are not only the occuring horrizon of orebodies , but also the main ore source bed of oreforming materials . 2. The effect of metamorphism and magmatism for mineralization . According to K ...
Page 130
... metamorphic rocks , while hydrothermal solution refers to a mixed fea- ture of magmatic , metamorphic and meteoric wat- er . ( 4 ) The value of Fe / Fe + Mg is rather high in the sector and country rock of ore shoot . This de- notes the ...
... metamorphic rocks , while hydrothermal solution refers to a mixed fea- ture of magmatic , metamorphic and meteoric wat- er . ( 4 ) The value of Fe / Fe + Mg is rather high in the sector and country rock of ore shoot . This de- notes the ...
Contents
Prospecting Criteria and DeepSeated Prognosis of Buried Ore in Jiapigou Gold Mining | 8 |
Update on Mining Activities on the Island of Hispaniola Dominican Republic and Haiti | 23 |
An Approach of the Geologic Genesis of Jinchanggouliang Gold Deposit Inner Mongolia | 42 |
Copyright | |
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According alteration angle application average backfill belt blasting block body capacity carried cement China compressive concentration cost depth direction distribution district dredge drift drilling economic effect efficiency equipment exploration fault Figure flocculation formed fracture geological gold deposits gold mines grade ground higher holes important improved increase indices intensity length less load located loss lower major mass material measures mechanized method mill mineralization mining method occurred operation orebody period pillar placer present problems production prospecting Province quartz raise range ratio recovery reduced rock roof samples screen sericitic shaft shown shrinkage side slice sluice stage stope strength stress strike stripping structure surface Table tailing thickness tion trend upper various vein ventilation vertical wall zone