陕西平利县水坪—凤凰山重晶石矿地质特征与矿床成因

GEOLOGY AND GENESIS OF BARITE DEPOSIT IN SHUIPING-FENGHUANGSHAN OF PINGLI COUNTY,SHAANXI PROVINCE

秦巴地区重晶石矿大致呈南带(镇巴—城口)、中带(洛河—竹溪)、北带(茨沟—赤岩)3条重晶石成矿带展布,水坪—凤凰山重晶石矿位于中带。矿体赋存于震旦系灯影组中,顶底板围岩主要为白云岩、白云质灰岩、炭硅质岩和炭硅质板岩,本文对水坪—凤凰山重晶石矿床地质特征进行了系统的研究,总结了矿床成因及找矿标志。

.Barite deposits in Qinba area are distributed along three barite metallogenic belts:south zone(Zhenba-Chengkou),middle zone(Luohe-Zhuxi)and north zone(Zigou-Chiyan),and the Shuiping-Fenghuangshan barite deposit is located in the middle zone,in which the ore bodies are mainly constituted by dolomite limestone,carbon siliceous rock and carbon siliceous slate in the Sinian Dengying Formation.In this paper,geology of the barite deposits occurring in Shuiping-Fenghuangshan area is systematically discussed,and then the genesis and prospecting marks of the deposit are summarized.