烟台市牟平区姜格庄金矿地质特征及其找矿前景

Geological Characteristics and Prospect of Jianggezhuang Gold Deposit in Muping District of Yantai City

摘要:

牟平-乳山成矿带是山东省重要的金成矿带，姜格庄金矿位于牟平-乳山成矿带东北部，米山断裂西侧。姜格庄金矿矿床成因为中低温岩浆热液金矿床，控矿构造以近SN向断裂构造为主。矿区内地表出露矿化蚀变带5个，圈定矿体5个，矿体多呈脉状、透镜状，成矿严格受矿断裂控制，产状与蚀变带一致，围岩为邱家单元片麻状黑云二长花岗岩，蚀变主要为硅化、钾化、褐铁矿化等。矿石矿物主要有黄铁矿、褐铁矿及黄铜矿，金矿物主要为自然金等。通过对矿体地质特征和分布规律研究，认为该区域断裂构造内具有较好的找矿潜力。

Abstract:

Muping-Rushan gold metallogenic belt is an importan gold metallogenic belt in Shandong Province. Jianggezhuang gold deposit is located in the northeast of Muping-Rushan gold metallogenic belt, and west side of Mishan fault. The origin of Jianggezhuang gold deposit is the middle-low temperature magmatic hydrothermal gold deposit, and the ore-controlling structure is dominated by fault structure with the trend of SN. There are five mineralization alteration zones on the surface of the mine, and five ore bodies have been circled. The ore bodies are vein-like and lenticular, which are strictly controlled by metallogenic faults. The occurrence are the same as the alteration zones. The country rocks of ore bodies are gneissose biotite monzonitic granite of Qiujia formation. The alteration is mainly silicification, potassium, limonitization, magnetite and so on. Ore minerals mainly include pyrite, limonite and chalcopyrite. The gold minerals are mainly natural gold. Based on the study of geological characteristics and distribution law of the ore bodies, it is considered that the fracture structure in this area has better prospecting potential.