山东栖霞杨家夼金矿地质特征及控矿条件分析

Analysis on Geological and Ore Controlling Conditions of Yangjiakuang Gold Deposit in Qixia City of Shandong Province

摘要:

杨家夼金矿产于粉子山群张格庄组、蓬莱群豹山口组地层中，从其控矿岩性及矿化特征来看应为类卡林型金矿床。地层主要以大理岩、透闪大理岩、透闪片岩、钙质板岩、千枚状板岩、黑云变粒岩、二云片岩为主。金矿主要赋存于岩性变化复杂的薄层状大理岩、透闪大理岩、板岩、透闪片岩中，除岩性控矿外，构造也具有明显的控矿性，当断裂构造切穿或与这些成矿有利岩性叠加时，金矿化更为明显，而岩性分界线或层间破碎带也是该类金矿的有利赋存部位。

Abstract:

Yangjiakuang gold deposit located in the strata of Zhanggezhuang formation in Fenzishan group and Baoshankou formation in Penglai group. As showed by the ore controlling lithology and mineralization characteristics, it should be a para-carlin type gold deposit. Strata are mainly composed of marble, tremolite marble, tremolite schist, calcareous slate, phyllite slate, biotite granulite and muscovite-biotite schist. Gold deposits occur mainly in thin marble, tremolite marble, slate and tremolite schist with complex lithology. Besides rock ore-controlling, structures also have obvious ore-controlling characteristics. When faults cut through or superpervised with the favorable mineralization lithology, gold mineralization is more obvious, and the lithologic boundary or layer fractured zones are favorable for gold mineralization.