内蒙古安家营子金矿田赋矿岩体地球化学特征  

GEOCHEMICAL FEATURES OF THE HOST INTRUSIVE ROCKSIN ANJIAYINGZI GOLD FIELD, INTER MONGOLIA

作　　者：王义文 谢锡才[1,2] 吕晓东[3] 刘晓利 董万成 

机构地区：[1]吉林有色矿产地质研究所 [2]东北大学黄金学院地质系 [3]赤峰市喀喇沁旗金蟾山金矿

出　　处：《黄金地质》1998年第2期1-10,共10页Gold Geology

摘　　要：岩石学、岩石化学、微量元素、稀土元素、稳定同位素（Ｓｒ、Ｐｂ、Ｏ、Ｈ和Ｃ等）和同位素年代学研究表明，安家营子金矿田与金矿有关的二长花岗岩小侵入体为下地壳基性岩石重熔成因，属Ⅰ型花岗岩类（或磁铁矿系列花岗岩），为金矿的同源岩和矿源岩。岩体以易活化金丰度高为突出特征。同源花岗岩源岩的含金性对斑岩金矿床的Ａｕ－Ｃｕ匹配有重要影响。Study of petrology, petrochemistry, trace element, REE, stable isotopes(Sr,Pb,O,H and C) and isotopic geochronology shows that Anjiayingzi small intrusion of monzonitic granite related to gold deposits is derived from remelting basic rocks of lower crust. It belongs to Itype granitoid (or magnetive series granitoid).As cognate rock and source rock, it is characterised by high abundance and easy mobilization. The goldbearing character of source rocks of cognate granite obviously affects Au/Cu proportion in porphyrytype gold deposits. 

关 键 词：金矿床 赋矿岩体 地球化学 斑岩金矿床 

分 类 号：P618.510.4[天文地球—矿床学]