四川杨柳坪热液型富铂族元素矿石的发现及其意义  

Discovery of PGE-rich hydrothermal ore in Yangliuping,Sichuan,and its significance

作　　者：王登红[1] 刘凤山[2] 楚萤石 罗辅勋 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质调查局,北京100083 [3]四川省地质矿产勘查与开发局,四川成都610081 [4]四川省地勘局402地质队,四川郫县611700

出　　处：《地质通报》2002年第3期158-162,共5页Geological Bulletin of China

基　　金：国土资源部1999年新上一般项目(编号:992024);国家重点基础研究项目(编号:G1999043203);地质大调查项目(编号:K1.4-3-4)资助。

摘　　要：四川杨柳坪是中国最主要的铂族元素矿床之一,但以往控制的97%以上的储量赋存在蚀变超基性岩体中,品位普遍不高。笔者等1999年通过对杨柳坪主矿体外围热液型矿体的调查,认为其中的热液型矿石可能富含铂族元素。经过初步的分析测试,证实了这一推测,并发现热液成矿作用与岩浆作用在杨柳坪地区具有明显不同的表现形式。根据最近在鱼海子等地地质调查的新发现,建议在扬子地台西缘进一步开展寻找热液型铂族元素矿床的工作。The Yangliuping Cu-Ni-PGE deposit is one of the most important PGE deposits in China.In the past over97%of the controlled reserves occurred in altered ultrabasic rocks with a low PGE grade.In1999the authors suggested through a field investigation of the hydrothermal ores at the peripheries of the main orebodies that the hydrothermal ores might be rich in PGE.This inference was later proved by ana-lytic data.Furthermore it has been found that hydrothermal ores and magmatic ores in the Yangliuping area have notably different PGE chondrite-normalized patterns.Recent geological survey in Yuhaizi and other areas suggests that there are good prospects for further looking for hydrothermal PGE deposits on the western margin of the Yangtze platform.

关 键 词：四川 矿石 铂族元素矿床 热液型 成矿作用 岩浆作用 

分 类 号：P618.53[天文地球—矿床学]