青海红土沟-川刺沟地区金矿床控矿条件与找矿标志探讨

Discussion of the Ore-Controlling Conditions and Prospecting Criterias of Hongtugou-Chuancigou Gold Deposit, Qinghai Province

多年来,在红土沟-川刺沟地区发现了多处岩金矿床(点),显示了该区具备较好的成矿条件。为总结区域成矿规律,研究典型矿床特征,笔者通过对区域地质背景的分析和红土沟金矿床、川刺沟金矿床地质特征的总结分析,对控矿因素与成矿的关系和找矿标志进行分析和总结。研究结果表明,矿床的形成与地层、断裂构造和围岩蚀变关系密切,具有明显的找矿标志,矿床的成因类型属于与韧性剪切和构造破碎蚀变有关的中-低温热液-交代蚀变岩型金矿床。

Plenty of rock gold deposits （occurrences） have been discovered in Hongtugou-Chuancigou area in recent many years, which reflects that this area has better condition of ore forming. In order to conclude the regional metallogenic regu- larity and study the characteristics of typical deposits, this paper analyzes and concludes the relationship of ore-control fac- tors with mineralization and the prospecting criterias by analyzing the regional geological background and comprehensively studying the geological characteristics of Hongtugou gold deposit and Chuaneigou gold deposit. The studying results indicate that the formation of the deposit with obvious prospecting criteriasis closely related to stratum, fractures and wallrock altera- tion, and it belongs to the ductile shear belt and tectonoclasticaheration related mesothermal - epithermal metasomatie al- tered rock type gold deposit.