山东省海阳市土堆金矿床地质特征

Geological Characteristics of Tudui Gold Deposit in Haiyang City, Shandong Province

摘要:

山东海阳土堆金矿床主要赋存于荆山群野头组及侵入其中的新元古代九曲单元二长花岗岩中。矿体多为脉状或透镜状;矿石矿物成分简单,金属矿物以黄铁矿为主,金矿物以自然金、银矿为主。通过分析成矿控制条件认为:荆山群分布区是寻找该类型金矿的地层标志;NE向的断裂带中,绢英岩化、绿泥石化、钾化、硅化、黄铁矿化等蚀变特征是寻找金矿(化)体的围岩蚀变标志,新元古代岩体及燕山晚期脉岩发育是寻找该类金矿的岩浆岩标志。

Abstract:

Through analysis and study on ore-forming geological b ackground and its deposit characteristics of Tudui gold deposit, geological char acteristics of Tudui gold deposit (Tudui, east of Tudui and Shanwang section) ar e introduced in this paper. It is regarded that gold ore occurred in Jingshan gr oup or intruded in monzonitic granites. Ore-controlling condition is strata, str ucture and magmatic rocks, that is the so called trinity ore-controlling.