Gold Mineralization at the Kyaukpahto Mine Area, Northern Myanmar |
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| Authors: | Ye MyintSwe Insung Lee Than Htay Min Aung |
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| Affiliation: | Universities' Research Centre, University of Yangon, Myanmar;School of Earth and Environmental Sciences, Seoul National University, Seoul 151–742 Korea [e-mail (IL): ];Department of Geology, University ofYangon, Myanmar |
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| Abstract: | Abstract. Gold mineralization at Kyaukpahto occurs as a stockworks/dissemination style with localized breccia zones in silicified sandstones of the Male Formation (Eocene). The mineralization appears to be closely associated with NNE-SSW trending extensional faults probably related directly to the dextral movement of the Sagaing Fault system. Intense silicifica-tion associated with sericitization, argillic alteration and decalcification is recognized in the Kyaukpahto gold deposit. The important ore minerals associated with the gold mineralization are pyrite, arsenopyrite and chalcopyrite with minor amounts of other sulfides. Gold occurs as free particles or locked with pyrite, arsenopyrite, chalcopyrite and tetrahedrite. Silver, copper, arsenic and antimony particularly appear to be good pathfinders and the best geochemical indicators of gold mineralization at Kyaukpahto. Electron microprobe analysis indicates that the fineness for the native gold ranges from 844 to 866. Present geological, mineralogical and geochemical investigations demonstrate that the Kyaukpahto gold deposit has been formed as a result of hydrothermal processes in a shallow level epithermal environment. |
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| Keywords: | Kyaukpahto gold mine Sagaing fault zone extensional fault stockwork/disseminated style breccia zone epithermal environment |
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