昏迷状态
发表于 2025-3-23 09:48:17
Introduction: Macraes Mine as an Orogenic Gold Deposit,y minor Au production. Modern exploration and mining has developed from these small beginnings into a world class mine operation which has produced >4 million ounces of Au from a total resource exceeding 10 million ounces. The modern Macraes deposit is dominated by deformed and altered metasediments
防锈
发表于 2025-3-23 16:03:19
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Implicit
发表于 2025-3-23 20:29:00
Structure and Lithology,hear zone is >500 m thick and structurally overlies upper greenschist facies rocks. Host schists have two end-member rock types: micaceous schist and feldspathic schist, and these are interlayered at all scales. Associated black sheared rocks are micaceous and have elevated graphite contents. Syn-mi
失误
发表于 2025-3-24 00:22:14
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哥哥喷涌而出
发表于 2025-3-24 04:21:21
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negligence
发表于 2025-3-24 07:18:20
Geochemistry of the Macraes Gold Deposit,llisation and replacement of micas mobilised Cr locally. Graphitisation of micaceous shears has locally increased the non-carbonate carbon content substantially. Sulphur was introduced during mineralisation as well, but some unmineralised protoliths have locally-elevated sulphur in metamorphic pyrit
deactivate
发表于 2025-3-24 11:08:51
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公理
发表于 2025-3-24 17:22:24
Graphite and Shear Zone Evolution,er and as structurally-controlled hydrothermal precipitates. Hydrothermal graphite is particularly enriched in Macraes deposit, in micaceous shears. Graphite deposition had physical effects on shear-related mineralisation, by lubricating the structures with positive feedback effects. In addition, gr
神秘
发表于 2025-3-24 22:07:37
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crutch
发表于 2025-3-25 01:44:10
Mining, Processing and Environment at Macraes,gold. Refractory ore, mainly sheared micaceous schist, yielded recoveries below 50 % of the gold. Ore consisting of graphitic sheared schist is preg-robbing, and gold recovery was also low. Introduction of pressure oxidation processing before cyanidation has increased gold recovery. Pressure oxidati