摘要
卡恰金矿位于化探Au、As、Sb异常浓集中心,受断裂控制;金矿(化)体分布于下—中石炭统所夹火山岩中,属破碎蚀变岩型金矿。矿石主要为含金黄铁(褐铁)矿化破碎蚀变安山岩,矿化蚀变强度与金矿(化)体品位正相关。矿体呈脉状、透镜状、分支脉状,厚度变化大,品位不均匀,属低品位金矿床。该矿成因与火山作用、构造作用和低温热液蚀变关系密切。
The Kaqia Au deposit is a fracture-altered rock-type gold deposit which is confined to volcanic rock of the Lower-Middle Carboniferous and controlled by fracture and to the center of Au-As-Sb geochemical anomalies.The host rock is altered andesite.Au orebodies occur as vein and lenticle with strongly changing grade sand thickness.Au mineralization is related to volcanism,tectonism and low-temperature hydrothermal alteration.
出处
《四川地质学报》
2017年第1期84-86,共3页
Acta Geologica Sichuan
关键词
金矿
化探异常
断裂带
卡恰
Au deposit
geochemical anomaly
fracture zone
Kaqia
