赤峰红花沟金矿稀土地球化学特征  

REE GEOCHEMICAL CHARACTERISTICS OF GOLD DEPOSITS IN HONGHUAGOU OF CHIFENG,INNER MONGOLIA

作　　者：谢锡才[1] 邱玉民[1] 

机构地区：[1]沈阳黄金学院

出　　处：《国土资源》1990年第1期56-66,共11页Land & Resources

摘　　要：作者通过对红花沟金矿各主要岩石类型及金矿石稀土元素丰度的分析测定,探讨了本区的稀土地球化学特征。研究表明:太古代变质岩、元古代花岗岩、中生代花岗岩及花岗斑岩、流纹岩和凝灰岩、第三纪玄武岩及金矿石的稀土配分曲线均为右倾斜型,即富轻稀土,都有十分相似的 Ce 负异常。变质岩、元古代花岗岩和玄武岩显示Eu 正异常,其它岩石和矿石显示 Eu 负异常。牛营子岩体显示较强的 Eu 负异常,且稀土总量明显高于元古代花岗岩。元古代的花岗岩源岩可能为石榴石角闪岩。金矿与斜长角闪岩关系最为密切,斜长角闪岩可能是形成金矿的矿源层。Based on the analysis of the REE contents of main rocks and gold ores in Hong- huagou gold field,the author discussed the REE geochemical features.The REE distribu- tion curves of Archaeozoic metamorphic rocks,Proterozoic granite,Tertiary basalt, Mesozoic granite,granite-porphyry,rhyolite,tuff,and gold ores are of right inclinnation, which indicates they enrich LREE and have completely similar Ce negative anomaly. The first third show positive Eu anomaly,but the others negative Eu anomaly.Nuyingzi granite appear clearly negative Eu anomaly and its ΣREE is much more bigger than that of Proterozoic granite which the source rock may be garnet-hornblendite.Gold deposits have the closest relationship with issite which is the source of gold.

关 键 词：红花沟 金矿 稀土地球化学 花岗岩 变质岩 斜长角闪岩 矿源层 

分 类 号：P[天文地球]