吉林省梅河口市张家沟金矿床主矿体地质特征

Geological features of main ore bodies of Zhangjiagou gold deposit in Meihekou City, Jilin Province

矿区内共圈出主矿体3条,均位于隐爆角砾岩筒内,为(1)号、(2)号、(3)号矿体,矿体形态呈脉状,严格受燕山期爱林隐爆角砾岩筒控制,均为隐伏矿体。走向44°~66°,倾向NW,倾角43°~75°,产状与隐爆角砾岩筒基本一致,单个矿体走向长度在40~230 m之间,倾斜延深40~260 m,厚度1.15~4.67 m,金品位0.91×10^(-6)~7.34×10^(-6),赋存标高510^-100 m。

There are 3 main ore bodies in the mining area, which are located in the cryptoexplosive breccia tube. They are No. 1, No. 2 and No. 3 ore body. The ore body is veined and strictly controlled by the Yanshanian Ailin cryptoexplosive breccia tube, all of which are concealed ore bodies. Trend 44°~66°, it tends to be NW and the dip angle is 43°~75°. The occurrence is basically the same as that of cryptoexplosive breccia tube. The length of single ore body is between 40 m ~ 230 m, the incline depth 40 m^260 m, the thickness 1.15 m^4.67 m, and the gold grade 0.91×10^（-6）~7.34×10^（-6）, and the occurrence level is 510 m^-100 m.