【摘要】 云南会泽铅锌矿床位于扬子板块西缘川黔滇铅锌银多金属成矿域的中南部,严格受断裂带的控制。流体包裹体、铅同位素和锶同位素的证据表明,成矿流体为不同性质流体的混合物,具有多源性。大部分矿物流体包裹体均一温度变化于150～250℃之间,部分包裹体大于300℃;盐度变化范围5%～21%,w(NaCl)平均为13.24%;密度0.546～1.129g/cm3;均一瞬间压力145×105～754×105Pa;成矿深度2200～2450m。流体混合后,由于大幅度的降压作用,使得成矿流体发生沸腾,流体产生过饱和,并最终导致金属矿物的析出。因此,这明显有别于MVT矿床,是一个新型的铅锌矿床。更多还原

【Abstract】 The Huize Pb-Zn deposits, Yunnan province is located in the central south of the Sichuan-Yunnan-Guizhou Pb-Zn polymetal metallogenic realm and is strictly controlled by faulted zones. The ore-forming fluid is a mixture of different fluids, which is characterized by moderate-to-high temperature（the homogenization temperatures of fluid inclusions in different minerals range from 110℃ to 401℃,mainly from 150℃ to 250℃）,moderate-to-high salinity （the salinity of ore-forming fluid ranges from 5 to 21wt% NaCl,average 13.24wt% NaCl）, moderate-to-high density (the density ranges from 0.546 to 1.129 g/cm³) and low pressure (the homogeneous instanteous pressure of inclusion ranges from 145×10⁵Pa to 754×10⁵Pa). In the ore deposit, the mineralization depth is 2200²450 meters. After different fluids mixing, the mixed fluid begins to boil because of large scale relief of pressure. This makes the mixed fluid oversaturate and makes ore minerals separate from the fluid. So, the ore deposits is a new type.更多还原