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 occ...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.展开更多
基金This work was supported by the National Natural Science Foundation of China (GrantNo .4 94 731 97) the project (KZ951B1411)of the Chinese Academy of Sciences
文摘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.