辽宁排山楼金矿区深部成矿预测及靶区验证效果

Metallogenic prediction in the deep part of Paishanlou Gold District in Liaoning and verification effect in target areas

排山楼金矿床赋存于太古宇建平群大营子组变质岩中,受近东西向东沟-马家荒韧性剪切带控制。矿区主矿体T1、T8及T4受逆冲推覆作用影响,T4矿体位于北侧,T1矿体居中,T8矿体位于南侧。T1、T8及T4矿体在走向及垂向均未尖灭,符合"白云质糜棱岩-矿体-黑云斜长糜棱岩和长英质糜棱岩"矿体围岩岩性序列,认为T1、T8与T4矿体在走向及深部均具有良好的找矿潜力,并对深部进行了成矿预测,圈定靶区2处。通过对靶区BQ2进行验证,探获了矿体,表明排山楼金矿区深部具备良好的找矿前景。

Paishanlou Gold Deposit is hosted in Archean Jianping Group Dayingzi Formation metamorphic rocks and is controlled by near EW Donggou-Majiahuang ductile-shear zone. The main ore bodies T1,T8 and T4 are influenced by thrust nappe structure. The T4 is located in the north,the T1 is in the middle and the T8 is in the south. T1,T8 and T4 don’t pinch out in the strike or vertically,conforming to the lithological sequence of wall rocks which is dolomitic mylonite-ore body-biotite anorthosite mylonite and felsic mylonite. It is considered that there are potentials in the strike and deep part of T1,T8 and T4 ore bodies. Metallogenic predictions in the deep part are carried out,delineating 2 target areas. The verification in BQ2 target area turned out successful,indicating there are prospecting prospects in the deep part of Paishanlou Gold District.