摘要
通过对湖南宝山花岗闪长质岩石岩相学特征研究,发现存在较多矿物不平衡结构,如富Ca的斜长石熔蚀核,黑云母、石英嵌晶结构,暗色镶边的眼球状石英,针状磷灰石、辉石、黑云母共存等现象,表明宝山花岗闪长质岩石为基性岩浆与酸性岩浆的混合成因;主微量元素分析结果进一步证实了岩体属于混合成因的观点。该结论为壳幔相互作用提供了岩石学依据。
Study on the petrography of granodiorite in the Baoshan area,Hunan Province shows that a lot of disequilibrium mineral textures,such as corroded plagioclase core,poikilitic quartz and biotite,quartz augen with black rim,coexisted needle apatite,pyoxene and biotite and so on occur in the rock.The texture means that the granodiorite is formed by mixing of mantle basic and crust acidic magma and the analysis of the major and trace elements also affirms the genesis providing petrological evidence for the interaction of mantle and crust.
出处
《地质找矿论丛》
CAS
CSCD
2017年第4期604-611,共8页
Contributions to Geology and Mineral Resources Research
关键词
宝山铅锌银矿床
花岗闪长岩
不平衡结构
壳幔混合成因
湖南省
Baoshan Pb, Zn, Ag deposit
granodiorit
disequilibrium mineral textures
genesis of mixing of mantle and crust
Hunan province
