陕西凤县八卦庙金矿床成矿地质特征及外围找矿前景分析

METALLOGENIC CHARACTERISTICS OF BAGUAMIAO GOLD DEPOSIT OF FENGXIAN COUNTY,SHAANXI PROVINCE AND ITS EXPLORATION PERSPECTIVE IN THE VICINITY OF THE DEPOSIT

阐述了八卦庙金矿床经历了长期、复杂的非线性成矿过程,着重分析了:含矿建造为与同生伸展断裂伴生的海底喷流热水沉积岩、热水浊积碎屑岩;脆-韧性剪切构造控制着主成矿过程;后期幔源岩浆气液叠加富集使其成为超大型金矿床。指出矿床成因为热水同生沉积细碎屑岩-剪切蚀变岩-幔源岩浆气液叠加富集型。八卦庙金矿床外围仍有巨大的找矿前景。

Baguamiao gold deposit was undergoing a long and complicated nonlinear ore forming process. The ore bearing formations are sea bottom spout hot water sedimentary rock and hot water debris turbidite associated with contemporaneous extense faults. The brittleductile shear structure controlled main ore forming process. The late stage mantle origin magma gasliquid overlapping accumulation resulted in gigantic gold deposit. It is pointed out that the genetic type of the deposit is hot water contemporaneous sedimentary fine detrital rockshear zone altered rockmantle origin magmatic gasliquid overlapping accumulation type. There is still a huge potential for further exploration outside Baguamiao gold deposit.