甘肃省肃北县塔儿沟钨矿床成矿地质特征及找矿方向研究

摘要

Taergou Tungsten deposit is located in the exocontact zone of southwest edge of Yeniutan granite, the western section of Qilian Mountain.Through the study on the geological characteristics and prospecting direction of the Taergou Tungsten deposit, it is suggested that the quantity, occurrence and scale of the ore body are controlled by fold structure and fault structure, and ore-forming hot source derived from the Yeniutan granites. Group B of Yemananshan Gr. is the only ore bearing horizon. NW fault is favorable place for prospecting of Skarn type scheelite deposit. NWW fault is favorable place for prospecting of quartz vein Tungsten deposit. W5 anomaly area is the best block for prospecting of scheelite deposit. W3 and W2 anomaly area is the best target area for prospecting of scheelite deposit. The exocontact zone of Yeniutan granite and Shiyouhenao granite is the key area of the next step for geological prospecting work.%塔儿沟钨矿床处于北祁连造山带西段、野牛滩花岗质岩体西南缘外接触带。通过对其成矿地质特征及找矿方向研究，认为塔儿沟钨矿床矿体层限明显，褶皱构造、断裂构造控制矿体数量、产状和规模，野牛滩花岗质岩体提供成矿热源。野马南山群B组片岩为赋矿唯一层位，北西向断层是寻找“矽卡岩型白钨矿体”有利部位，北西西向断层是寻找“石英脉型黑钨矿体”有利部位，W5异常区是寻找白钨矿床的最佳地段，W3、W2异常区是寻找白钨矿床的最佳靶区，花岗质岩体外接触带是下一步找矿勘查的重点区域。