湘西地区岩金矿成矿规律及找矿方向

湘西地区的岩金矿,主要有石英脉型、破碎带蚀变岩型和基性岩蚀变型三类。金的空间分布,表现出层控性、构控性和分带性等规律,形成官庄、黔阳、漠滨等三个金矿化集中区。其中破碎带蚀变岩型金矿,是湘西地区找金的主攻方向,石英脉型金矿次之。两类金矿,均已建立找矿概念模式,并指出了找金的大方向。

METALLOGEIC PATTERN AND DIRECTION OF PROSPECTING OF PRIMARY GOLD MINERALIZATION IN WESTERN HUNAN

The primary gold deposits in western Hunan are included mainly in three types as quartz vein type, fracture zone altered rock type and altered basic rock type. The spatial distribution of gold mineralization shows stratabinding, structure-controlling and zoning features, and forms three gold mineralization concentrating zone, i. e., Guanzhuang, Qianyang and Mobin. The fracture zone altered rock type should be the main direction of attack of gold prospecting in western Human, next to which is quartz vein type. For the two types of gold mineralization, the concept model of ore-searching have been established, and the main direction of gold prospecting has been pointed out.