Abstract
The mode of occurrence of gold in the Yata micro-disseminated gold deposit is approached through chemical phase studies coupled with ore-dressing monitoring and micro-beam analysis. The results showed that gold occurred for the most part as ultra-microscopic particles adsorbed on the surfaces or fracture planes of pyrite and other sulphides. The proportions of gold of different occurrences were estimated solutions containing nanometer-sized gold particles were prepared following the hydrolysis-reduction procedure and the adsorption of nanometer-sized gold on ordinary sulphides and rocks was experimentally determined. It is evident that sulphides are good adsorbents of gold and this is consistent with geological observations.
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This work was supported by the National Natural Science Foundation of China (Grant No. 49473197 ) and the project (KZ951-B1-411) of the Chinese Academy of Sciences.
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Xiaoqing, Z., Zhonggang, W. Gold occurrence and ore genesis, Yata micro-disseminated gold deposit, Guizhou, Southwest China. Chin. J. Geochem. 21, 370–373 (2002). https://doi.org/10.1007/BF02831538
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DOI: https://doi.org/10.1007/BF02831538