湖南郴州江口萤石矿地质特征及找矿标志

Geological features and prospecting criteria of fluorite ore in Jiangkou,Chenzhou,Hunan

研究江口矿区萤石矿床控矿地质条件、富集规律,分析找矿标志。通过资料收集、野外地质考察、综合研究等方法总结出控矿地质条件和富集规律,并分析得出6条找矿标志。认为江口矿区萤石矿受断裂控制明显,矿带整体呈南北向,矿脉呈北北东或北西向,表明是构造活动叠加控矿;区内岩浆岩为一套中酸性富Ca、F的钙碱性岩浆岩,不仅为成矿提供了物质来源和热源,而且酸性环境有利于萤石矿床的形成和富集。认为江口矿区萤石矿床是受构造+岩浆岩联合控矿。

This paper studied the ore-controlling geological conditions and enrichment rules of fluorite deposit in Jiangkou mining area,and analyzed the prospecting criteria.After data collection,field geological investigation,and comprehensive research,the ore-controlling geological conditions and enrichment rules were summarized,and six prospecting criteria were obtained.It was believed that the fluorite ore in Jiangkou mining area was obviously controlled by faults.The ore belt was in the whole north-south direction,and the ore veins were in the north-northeast or north-west direction,which indicated that the tectonic activities were superimposed to control the ore.The magmatic rocks in the area were a set of medium-acid calc-alkaline volcanic rocks rich in Ca and F,which provided not only material source and heat source for mineralization,but also an acidic environment favoring the formation and enrichment of fluorite deposits.Therefore,the fluorite deposit in Jiangkou mining area was controlled jointly by structure and magmatic rock.