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| Material components and occurrence states of gold in the Manzhanggang deposit,Qinghai Province |
| LIU Heng-Xuan, RAO Kui-Yuan, GUO Wei-Peng, LIAO Yi, SHI Jun-Bo, ZHOU Shan-Shan |
| No.282 Geological Party,Sichuan Bureau of Nucear Geology,Deyang 618000,China |
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Abstract Manzhanggang gold deposit is epithermal gold deposit newly discovered in recent years, in Qinghai Province. Based on field work and used of polished thin section identify、chemical composition analysis、electron probing analysis、phase analysis.et al,think of the deposit has quartz veins, altered tuff type, broken altered rock type three ore types. Ore structure have porphyritic texture、cataclastic texture、idiomorphic-hypidiomorphic texture、allotriomorphic-granular texture,and ore structure have massive structure、impregnation structure et al.Natural gold distribution of intergranular gold, granularity concentrated on -0.15+0.074 mm and -0.04+0.01 mm, the distribution law were 38.99% and 42.05%, easy to monomer dissociation and Conducive to its beneficiation enrichment. Used Nelson re-election if ore grinding fineness -0.074 mm when accounting for 60.55%,no cyanide leach to tailings. Finaliy, The total gold recovery rate of 98.63%.
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Received: 31 October 2016
Published: 20 October 2017
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