抚松县三道砬子河地区金矿成矿地质特征浅析

Analysis on metallogenic geological characteristics of gold deposit in Sandaolazihe area, Fusong County

三道砬子河地区位于夹皮沟成矿带南西侧,处在桦甸-长白山断裂带上。区内以太古宙花岗岩为主,局部残留表壳岩系。伴随滨太平洋构造域演化,区内发育了众多的中酸性脉岩,并伴有Au、Ag等矿化,局部形成金(银)矿体。矿床类型属于岩浆热液型矿床。

The Sandaolazihe area is located in the southwest side of the Jiapigou metallogenic belt, on the HuadianChangbashan fault zone. The area is distributed by Archaeozoic granite and with some residual surface crust rocks.With the evolution of Circum-Pacific tectonic domain, many intermediate-acid dikes are developed in the area, which accompanied by mineralization such as Au, Ag, and some gold(silver) ore bodies are formed locally. The type of deposit belongs to magmatic hydrothermal deposit.