地质与勘探2011，Vol.47Issue(6)：1002-1008,7.
云南文山官房钨矿床花岗岩地球化学特征及其地质意义
Geochemical Characteristics of Granite in the Guanfang Tungsten Deposit of Wenshan, Yunnan Province and Its Geological Implications
摘要
Abstract
Petrologic and geochemical analysis for granites from the Guangfang tungsten deposit of Wenshan, Yunnan Province shows that their average contents of SiO2 ,Na20 and K20 are 68.49% ,2.38%, and 4.26%, respectively. The average Rittmann index is 2.33. Trace elements of Nb, Ta, and Y are enriched while Sr and Ba are depleted. The average value of Y REE is 256.09×10^-6. The REE pattern of Guangfang granites is of the enriched type of LREE with pronounced Eu negative anomalies and δEu = 0.62 - 0.72. It is shown that the granite in Guanfang is characterized by highly-enriched kalium calc-alkaline and belongs to the S-type granite. Major and trace elements imply that the granite in Guanfang was formed in a continental collision tectonic setting. The features of REE indicate that they were derived from the crust. The content of tungsten in the granite is 23.7 times the average content of granite in China. Its high tungsten abundance had accommodated the generation of the Guanfang tungsten deposit in this region.关键词
官房钨矿床/花岗岩/岩石地球化学/大陆碰撞/云南文山Key words
Guanfang tungsten deposit/granite/petrology and geochemistry/continental collision/Wenshan in Yunnan Province分类
天文与地球科学引用本文复制引用
张亚辉,张世涛..云南文山官房钨矿床花岗岩地球化学特征及其地质意义[J].地质与勘探,2011,47(6):1002-1008,7.基金项目
校企横向合作项目（619320100047）资助. （）
