白马厂铅锌矿床地处川滇黔毗邻区成矿域之滇东北成矿带的中西部,北西侧紧邻滇东北地区重要的大型铅锌矿床—茂租铅锌矿,是区内极具找矿潜力的铅锌矿床.矿区已有地质工作程度较低,研究工作基本空白.野外地质调查及室内研究表明:(1)矿体主要赋存于灯影组上段(Z2dn2)白云岩中,寒武系筇竹寺组(∈1q)、渔户村组(∈1y)为矿液运移的良好屏蔽层.(2)矿体按产出特征分为2类:①层状、似层状矿体,主要以闪锌矿为主、伴生少量方铅矿；②脉状矿体,主要以方铅矿为主,局部见闪锌矿.(3)构造(褶皱、断裂)与地层复合控矿特征明显.以上认识可为本区勘察找矿及矿床成因机制研究工作提供理论基础,为滇东北地区铅锌成矿体系的研究提供补充.%Baimachang lead-zinc deposit is located in the midwest of metallogenic belt Northeast Yunnan,which belongs to the Chuan-Dian-Qian adjacent metallogenetic area.Because its northwest side is closely next to an important large-scale lead-zinc deposit in Northeast Yunnan-Maozu lead-zinc deposit,it has great prospecting potential.The degree of geological work is low,and research is already blank.Geological survey and laboratory studies showed that:(1) Ore body mainly hosted in the dolomite,upper section of the Dengying Formation (Z2dn).Qiongzhusi Formation (∈1q) and Yuhucun Formation(∈ 1Y)are good shieldings during the ore-forming fluid migration.(2)According to the output characteristics,ore body is divided into 2 categories:① stratified,layered ore bodies,mainly sphalerite,and small amounts of galena; ② vein orebody,mainly galena,local see sphalerite.(3) Compound ore controlling characteristics of structure (fold,fault) and formation is obvious.All understandings above can provide theoretical basis for exploration,prospecting and research on metallogenic mechanism in this district,also provide supplementary for research on mineralization system of lead-zinc deposits in Northeast Yunnan.
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