西藏噶尔县巴尔地区某铜金矿地质特征及找矿潜力评价

Geological Characteristics and Prospects of a Copper and Gold Mine in Baer Area Gaer County,Tibet, China

研究区属喜马拉雅成矿区雅鲁藏布江成矿带西段,研究区及其外围已存在多处锑矿及砂金矿点,该区域砂金矿广泛分布为寻找岩金矿提供找矿方向。同时成矿与主边界断裂的次级脆韧性剪切带有关,其中沿断裂走向起伏段具有良好的矿化露头。地球化学特征显示,铜金元素异常受断裂控制明显,与已发现的矿化体位置吻合。同时矿化露头中发育大量锑黝铜矿,说明矿化体剥蚀较浅,深部极有可能存在隐伏的铜、金矿化体,具有较大的找矿潜力。

The study area is located in the western part of the Yarlung Zangbo metallogenic belt of the himalayan metallogenic province,the study area and its periphery has the existence of multiple antimony deposit and placer gold deposits, placer gold deposits are widely distributed, providing prospecting directions for gold deposits. The mineralization is related to the secondary brittle ductile shear zones of the main boundary faults, among them,there is good mineralization outcrop along the strike and fluctuation section of the fault. Geochemical features show that the anomalies of copper and gold elements are obviously controlled by faults and coincide with the discovered mineralized positions. A large number of antimony fahlore mineralization in outcrop, it shows that the denudation degree of mineralized body is relatively shallow, deep buried copper and gold mineralized bodies are most likely to exist, with great prospecting potential.