对辽宁二道沟金矿床成矿机制的讨论──稀土元素地球化学证据

GEOCHEMIISTRY STUDIES OF RARE EARTH ELEMENTS IN THE ERDAOGOU GOLD DEPOSIT

通过对火山岩、对面沟花岗（斑）闪长岩和金矿石的稀土元素组成及分布模式的研究对比，表明成矿物质来源于二道沟的火山岩系，成矿热液来源于沿火山岩中裂隙下渗的被加热的大气降水来源的地下水。

The studies of rare earth element pattern on volcanic rocks, sub volcanic rocks, granodirites and gold ore from the Erdaogou gold deposit indicate that the REE pattern in the gold ores is very similar to those of the volcanic and sub volcanic rocks, suggesting that gold mineralization correlates with the rhyolitic volcanic and sub volcanic rock. It is an epithermal gold deposit hosted volcanic rocks. The meteoric water is dominant source of ore bearing hydrothermal solution, and the ore forming material mainly derived from the volcanic rocks.