福建省永安市虎山地区早三叠世溪口组新祠角岩段含矿特征及找矿前景探讨

Exploration of ore bearing characteristics and prospecting prospects in the Xincijiao section of the Early Triassic Xikou Formation in the Hushan area of Yong'an City, Fujian Province

通过永安市虎山地区钨、铅锌多金属矿地质、地球化学及含矿特征的分析,认为区内早三叠世溪口组新祠角岩段含矿性较好,成矿的可能性较大。透辉石(矽卡)岩等钙镁硅盐岩是该区主要的容矿岩石,是由碳酸盐岩经燕山中期岩浆活动产生的含矿热液交代作用形成。矿(化)层与碳酸盐岩关系密切,显示出其层控矽卡岩型矿床的基本特征。总结了区内的找矿标志和找矿方向,指出虎山地区主攻矿产类型为层控矽卡岩型有关的钨、铅锌多金属矿。

Through the analysis of the geological,geochemical,and ore bearing characteristics of tungsten,lead zinc polymetallic deposits in the Hushan area of Yong'an City,it is believed that the Xincijiao section of the Early Triassic Xikou Formation in the area has good ore bearing potential and a high possibility of mineralization.Diopside(skarn)and other calcium magnesium silicate rocks are the main ore bearing rocks in the area,formed by the hydrothermal metasomatism of carbonate rocks generated by the middle Yanshan magmatic activity.The close relationship between the mineralization layer and carbonate rocks demonstrates the basic characteristics of its layer controlled skarn type deposits.Summarized the prospecting indicators and directions within the area.It is pointed out that the main type of mineral resources in the Hushan area is tungsten and lead zinc polymetallic deposits related to the layered siliceous carbonate type.