摘要
银岩锡矿床是目前国内较典型的斑岩锡矿床。本文总结了含锡斑岩体的岩石化学、矿物学、稀土模式、微量元素地球化学、Rb-Sr同位素等岩石学和地球化学特征。进而探讨了花岗斑岩的成因。
Located in Guangdong Province, the Yinyan tin-bearing granite porphyry is a small stock covering an area of 0.06 km2 and extending 200 meters underground. It occurs in the pre-De-vonian metamorphic rocks. Explosive breccias are developed in the contact zone. The isoto-pic age of the porphyry is 86.9 Ma., corresponding to Late Yenshanian. This paper focuses on the characteristics of the stock in view of its geology, petrochemistry and mineralogy. Fur-thermore, the paper also discusses the origin of the granite porphyry from REE distribution patterns, trace elements, Rb-Sr isotopes, etc. It is concluded that the Yinyan tin-bearing granite porphyry belongs to remelting -regenerated granitoids of the continental crust rework-ing type.
出处
《地球化学》
CAS
CSCD
北大核心
1989年第3期251-259,共9页
Geochimica
基金
国家基金
