贵州凯里柏松铅锌矿地质特征及控矿地质因素初探

On Geological Characteristics and Mineralization-controlling Conditions of the Baisong Lead-Zinc Deposit, Kaili, Guizhou

贵州凯里柏松铅锌矿位于黔东铅锌成矿带中段 ,含矿层位主要为下寒武统清虚洞组三段及中寒武统石冷水一段 ,含矿岩系为鲕粒白云岩、白云岩 ,矿体呈似层状、透镜状产出 ,矿石组分简单 ,矿石矿物为闪锌矿、方铅矿及少量黄铁矿 ,脉石矿物为白云石及少量方解石。矿体的产出主要受地层、岩相、构造条件控制。通过对矿床特征、成矿地质条件等与该成矿带已知矿床对比分析 ,认为该矿床具有较大远景规模。

The Baisong lead-zinc deposit, Kaili, Guizhou is at the intermediate zone of the lead-zinc ore belt in eastern Guizhou, where the ores occurred in the layers-set of the gonidial dolomite of involving the Qingxudong Formation of the Lower Cambrian and the Shilengshui Formation of the Middle Cambrian. Ore-bearing rock formation of the deposit consist of oolitic dolomite and dolomite, and its ore bodies are stratoid and lenticular in occurrence, in addition their composition, containing the ore minerals of sphalerite, galenite and a small quantity of pyrite as well as the gangue minerals of dolomite and little calcite, are simple in the ores. The controlling conditions of mineralization on orebodies relate to strata, rock facies and geological structures. The writer suggests that its ore-bearing belt is prospective to be a more large-scale reserve.