冀东金厂峪金矿深部和外围找矿预测

金厂峪金矿是冀东地区开采历史超过半个世纪的大型金矿山,且近年来新增地质储量不断上升,受到地质学家的广泛关注。本文从幔枝构造成矿控矿作用的视角,简述了矿床地质特征,侧重讨论了成矿物质来源,认为成矿流体源于深部,通过地幔热柱多级演化向上迁移,在有利的构造扩容带中集聚成矿,进而在介绍近年来新的找矿进展基础上,探讨了构造的成矿控矿作用,进一步指出了深部和外围找矿方向。

The exploration and prognosis in the depth and the periphery of the Jinchangyu gold deposit in eastern Hebei

The Jinchangyu ore deposit is a large-size gold deposit in eastern Hebei with mining history of more than half a century.In recent years,its resource reserves are constantly increasing.Which has aroused extensive attention among geologists.From the angle of ore-forming and ore-controlling action of the mantle branch structure,this paper briefly describes geological characteristics of the Jinchangyu gold deposit,with the emphasis placed on the source of the metallogenic material.The authors hold that the ore-forming materials were mainly derived from the boundary of the core – mantle and,through multiple evolution of mantle plume,they moved to the favorable structure and were deposited to form ore deposits.This paper emphatically discusses ore-forming and ore-controlling action of geological structure on the basis of achievements obtained in recent years.The prospecting directions in the depth and the periphery of the Jinchangyu gold deposit are pointed out.