河南栾川罗村岩体特征及其钼矿化

Characteristics and molybdenum mineralization of Luocun rock mass in Luanchuan of Henan

通过对罗村岩体的岩石、岩石化学、微量元素、包裹体测温及同位素年龄测试等方面的研究,罗村岩体属燕山晚期中低温浅成相酸性斑岩体;岩体中环带角砾岩微量元素Cu、W、Mo含量可高出K·图尔基安等同类岩石平均值12倍以上,Mo高出30倍,具有较高的矿化度,对成矿十分有利;罗村岩体属于伸展拉张的构造环境,成矿与岩体中的角砾岩关系密切,对进一步开展地质找矿具有重要意义。

Based on the study of Luocun rock mass in terms of lithology,lithochemistry,trace element,inclusion thermometry and isotopic dating,it is indicated that Luocun rock mass is a kind of low-to-moderate temperature supergene acidic porphyry of late Yanshanian.The content of trace elements like Cu,W and Mo in the zonal breccia of rock mass is 12 times higher than that in rocks of the same category such as K.Tulchian rocks,while the content of Mo is 30 times higher.Obviously,the degree of mineralization is relatively high in the rock mass and the ore-forming environment is favorable.Luocun rock mass occurs in an extensional tectonic environment and its ore-formation has close relationship with the breccia inside the rock mass.This research has great significance to future prospecting works in this area.