Abstract:

The North-East structure map of Vietnam showed that the stretch of Biển Động-Quý Sơn belonged to Mesozoi An Châu basin. Copper ore bodies in the study area were mainly distributed in sandstone-siltstone, clay-siỉtstone in third assise of the Mẫu Sơn b íormation. Combination betvveert traditional and modern research methods such as fieldwork, section, mineralography, iCPMS and SEM shovved that ore mineral composition, structure texture of copper ore in Biển Động-Quý So'n stretch included primary ore minerals tetraedite, bornite, chalcosine, chalcopyrite and secondary ore mineraís malachite, azurite, covelin, cuprite, etc. In addition, there also found minerals, pyrite, galenit, sphalerite and gold. The first time, self-existent gold was found in the form of small inclusion of pyrite in the study area. Texture and structúre of ore formed during hydrothermal metallization.