山神庙隐爆角砾岩型锌矿床地质特征及控矿因素

Geological Characteristics and Ore-controlling Factors of Shan Shenmiao Cryptoexplosive Breccia Type Zinc Ore Bed

山神庙锌矿床为隐爆角砾岩型矿床,矿床主要受区内北东向、北西向两组构造断裂的控制,与燕山期辉石岩、花岗斑岩岩体侵入太古界单塔子群白庙组变质岩地层形成隐爆角砾岩关系密切,同时,锌矿品位亦与角砾的成分、大小关系密切,当辉石岩、花岗斑岩为角砾,且角砾较小时,锌矿品位相对较高,白庙组变质岩为角砾时,锌矿品位低。隐爆角砾岩型锌矿床的识别,对华北地台北缘锌矿床的找寻提供了一种新的成矿模型,具有重要地质意义。

Shanshenmiao zinc ore bed for cryptoexplosive breccia type deposit, Deposit mainly by north east, north west, control of twogroups of tectonic fracture in The mining area, Closely related to formed cryptoexplosive breccia with the pyroxenite and granite porphyry rock in yanshan period, intrusion the metamorphic strata of Bai Miao group of archean erathem Dantazi subgroup At the same time, Zinc ore grade is also closely associated with breccia composition, size, When pyroxenite, granite porphyry as breccia, breccia and is small, Zinc ore grade is relatively high, Bai Miao group metamorphic rocks as breccia, Zinc ore grade is lowo The recognition of cryptoexplosive breccia type zinc ore bed, Of zinc ore beds of the Northern north China platform search provides a new metallogenic model, and is of important geological significance.