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The occurrence of gold in pyrite from the Liulincha gold ore belt, western Hunan Province, China |
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| Authors: | Zengsheng Li Xiaoqing Zhu Huanzhang Lu Tao Han |
| Institution: | 1. State Key Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550002, China 2. University of Chinese Academy of Sciences, Beijing, 100049, China 3. University of Quebec at Chicoutimi, Chicoutimi, G7H 2B1, Canada |
| Abstract: | In this study, an electron microprobe analyzer (EMPA) was used to map the spatial distribution and the occurrence of invisible gold in pyrite from the Liulincha gold ore belt. EPMA data show that gold mainly occurs as submicroscopic-microscopic inclusions. From the contrast of the major guide elements of pyrite from the Liulincha gold ore belt and those from four hydrothermal-type gold deposits in the Jiaodong region, we can see the pyrites were formed in two stages: the pyrite from wall rock is mainly sedimentogenic, with simple structure; and the pyrite from ore body experienced early sedimentary process to late hydrothermal activity, the pyrite is regular in crystal form and exhibits fractured structure. |
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