广东陆河县仙水沥锡多金属矿地质特征及找矿方向

GEOLOGICAL CHARACTERISTICS AND PROSPECTING DIRECTION OF THE XIANSHUILI TIN POLYMETALLIC DEPOSIT IN LUHE COUNTY,GUANGDONG PROVINCE

仙水沥锡多金属矿体主要赋存于早白垩世粗粒斑状黑云母二长花岗岩与下侏罗统吉水门组片岩内外接触带,成矿构造主要为莲花山断裂形成的北东向裂隙,蚀变主要有绿泥石化、石榴子石化、绢云母化及硅化等,根据矿体产出特征及主要控矿因素推断,初步认为矿床为中高温岩浆热液充填交代型矿床。在其外围及深部仍有找矿空间。

The ore body of Xianshuili tin polymetallic deposit mainly occurs in the contact zone between the early Cretaceous coarse grained porphyritic biotite monzogranite and the lower Jurassic Jishuimen Formation schist.The ore-forming structure is mainly a northeast trending fracture formed by the Lianhuashan fault,and the alterations mainly include chloritization,garnetization,sericitization,and silicification.Based on the occurrence characteristics of the ore body and the main ore-controlling factors,the deposit is preliminarily consideredto be a medium-high temperature magmatic hydrothermal filling and metasomatic type deposit,and there is still potential for ore exploration in its periphery and deep areas.