摘要
本文对黔东地区金矿进行了矿床类型划分,并综述了各类型的基本特征。该区中—低温热液作用形成的金矿均属产于沉积岩建造中的金矿床,与岩浆岩在成因上没有直接联系。其中,天柱—锦屏—黎平地区、梵净山地区及从江地区金矿为变碎屑岩中脉型及蚀变岩型金矿床,三都—丹寨地区金矿为细碎屑岩—碳酸盐岩中微细浸染型金矿床,天柱—锦屏—黎平地区及梵净山地区的变碎屑岩中脉型金矿床(点)暴露表生环境后可形成冲积型砂金矿床。
A division of the types is made for the gold deposits in the eastern area of Guizhou, and the essential characteristics are stated synthetically. The gold deposits deprived from mesothermal and microthermal processes mostly fall into the types in sedimentary formation, which in origin is not directly correlative to the magma. Among them, the gold deposits belong to quartz-vein type and altered rock type within the metamorphic metaclastics over the areas of Tianzhu-Jingpin-Liping, Fanjingshan Mountain and Chongjiang, and disseminated type of gold deposits within the microclastic and carbonate over the areas of Sandou-Danzhai, the quartz-vein type of gold deposits or occurrences within the metamorphic metaclastics may generate alluvium sand gold deposit when exposing to the supergene environment.
出处
《贵州地质》
2005年第4期229-235,共7页
Guizhou Geology
关键词
金矿
矿床类型
黔东
贵州
gold deposit
deposit types
eastern Guizhou
Guizhou
