清水塘铅锌矿床的成因及其找矿方向

Origin of Qinshuitang Pb-Zn Deposit and the Prospecting Orientation for New Deposits

清水塘铅锌矿床位于关帝庙岩体西南侧,赋存于寒武系上统及(?)陶系白水溪组中,有与地层整合的整合型似层状矿体和切层的脉带型矿体。矿石中除Pb、Zn、Cu、Fe外,尚有Ag、In、Sb、Ga、Ge等20多种元素。层位控制矿床的分布,岩性及断裂控制矿体产出。成矿元素组合,矿石包体特征及均一法测温结果和硫同位素组成等显示矿床属构造一热卤水再造成因。

Located on the southwest side of Guandimiao granite, Qinahuitang Pb-Zn deposit occura in the atrata of upper Cambrian system and Baishuixi group of lower ordovician ayatem. There are two kinds of ore bod-ies of it: (1)layer-like ore body which is conformable with strata; (2)beltveined type which cuts through the Stra-ta. In addition to Pb, Zn, Cu, and Fe, more than 20 another elements exist, such as Ag, In, Sb, Ga, Ge, etc. Strata and their lithologic characters and faults in the area control the lormation and distribution of deposits. Ac-cording to the association of ore-forming elements, inclusions in ore and the homogenisation temperatures of them, and the data of Sisotope as well, author believes that the depoait should be formed by the structure-hot-brine aolution.