【作者】 张正伟； 朱炳泉； 张乾； 朱笑青； 常向阳； 胡耀国；

【Author】 Zhang Zhengwei Zhu Bingquan Zhang Qian Zhu Xiaoqing Chang Xiangyang Hu YaoguoInstitute of Geochemistry, Chinese Academy Sciences, Guiyang 550002; Institute ofGuangzhou Geochemistry, Chinese Academy Sciences, Guangzhou 510640

【机构】 中国科学院地球化学研究所； 中国科学院广州地球化学研究所；

【摘要】 根据地球化学急变带控矿的分带性规律,在滇黔边界发现了新类型的铜矿化及工业矿体找矿线索。铜矿化一般赋存在二叠系峨眉山玄武岩组,他们的具有难识别的特点,铜矿物以自然铜和黑铜矿为主,赋存于特定的熔结凝灰岩、火山凝灰角砾岩层位,形成作用与有机质有关,很可能形成一种新的铜矿工业类型。基于野外调研和室内岩矿鉴定,按铜矿化的矿物组合及赋存特点,初步划分出以下铜矿化类型:(1)沥青质铜矿化;(2)次生氧化、硫化物铜矿化;(3)团块浸染状自然铜矿化;(4)热液蚀变沸石化型黑铜矿化;(5)凝灰角砾岩型黄铜矿化;(6)碳质、硅化木铜矿化。其中,沥青质铜矿化类型在区域上分布广泛,沥青广泛充填于熔结凝灰岩的气孔和含矿凝灰岩、碳泥质岩石破碎带中,自然铜、黑铜矿等矿物赋存于硅质沥青岩中,矿化层稳定,找矿标志明显,具有重要的创新性研究意义和找矿价值。更多还原

【Abstract】 According to the pattern of the geochemical steep zone controlling the mine zone, we have being found the clues of prospecting the new type of copper ore deposits in the border area between the Yunnan and Guizhou Provinces. The copper mineralization was constrained by the ancient volcanic vents of Permian basalt eruption, they be provided with the characteristics of difficult to discriminating, existed in the strata of Emeishan basalt Group. Copper ore types give priority to native copper and tenorite occurred in the specific strata of sinter tuffs and volcanic breccias tuffs. The copper mineralization was tightly related to siliceous bitumen rocks with bed thickness of about 15 meters and and involved in reduction environments. It was in all probability forming a new type of copper ore deposite. Base on the field finding and chamber mineral certificate, according to the mineral assemble and occurrence ore peculiarity, the types of the copper mineralization was divided as the following: (1)The asphaltene copper mineralization; (2)The second oxygenation and sulfides copper mineralization; (3)The conglomeration native coppers mineralization; (4)The zeolitization tenorite mineralization; (5)The volcanic breccias tuffs chalcopyrite mineralization; (6) The carbon-siliceous chalcocites and native coppers mineralization. In this types of the copper mineralization, the asphaltene copper mineralization was widely distnbutioned in the border area between the Yunnan and Guizhou Provinces, and was general occurred in the air hole of sinter tuffs and coppergenous, which provided copper source of mineralization. The copper mineralization was tightly involved in reduction environments. Native copper and tenorite et al. were widely occurred in the siliceous bitumen rocks, they were stability controlled by the specific strata of oregenous. The type of asphaltene copper mineralization be provide with important significance of innovate research and price of prospecting.更多还原