熊耳山区花岗岩特征及其与金矿化的关系

熊耳山区是豫西主要的金矿化集中区之一。研究成果表明：熊耳山区燕山期花岗岩是壳幔混熔型花岗岩，它们控制了熊耳山区各种类型金矿化的时空分布。花岗岩浆为金成矿提供了热源与部分物质来源，岩浆热液是金成矿的主要热液来源。该区金成矿时代为燕山中晚期。燕山期花岗岩体外接触带１—６ｋｍ、各种构造－岩浆活动集中发育地区是金矿找矿的有利地区。

GRANITE CHARACTERISTICS AND THEIR RELATION WITH GOLD MINERALIZATION IN XIONGERSHAN AREA

Xiongershan area is one of the major concentration areas of gold mineralization in western Henan.Invistigation results indicate that the Yanshanian granite in Xiongershan area isof crust-mantle mixed source origin and controls the space-time distribution of various typesof gold mineralization in Xiongershan area.The granite magmas supplied hot source and partial ore-forming material for gold metallogenesis and magmatic activity offered principal hydrothermal source for gold mineralization.Gold mineralization in the study region was formedduring the Middle and Late Yansbanian period. The exocontact zone 1-6km from the contactof the Yanshanian granite massifs with indication of various tectono-magmatic activities arebelieved to be favourable sites for gold prospecting.