Characteristics and Genetic Significance of Skarn in the Gaerqiong Cu-Au Deposit, Ge’gyai, Tibet
详细信息
- 责任者：Song Junlong (College of Earth Sciences ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Li Zhijun
- 刊名：Acta Geoscientica Sinica
- 出版年：2012
- 卷期：33(4)
- 关键词：铜矿 ; copper ores ; 金矿 ; gold ores ; 矿床成因 ; mineral deposit genesis
- 页码：p.703-712
- 图表：4 illus., 21 tables, 2 refs.
- 分类号：1001
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
The petrologic and mineralogical characteristics of the skarn in the Gaerqiong copper-gold deposit were studied in this paper. A study of petrochemical, rare-earth and trace element characteristics of the skarn-type ore shows that the skarn is calcic skarn, which has characteristics of weak negative Eu anomalies and LREE enrichment as well as the enrichment of large ion lithophile elements such as Rb, Th, Cs and U and the depletion of high field strength elements such as Hf, Ti and Y. Based on a discussion on the formation background of the Bangonghu-Nujiang metallogenic belt and the temporal-spatial relationship, the authors consider that the Gaerqiong deposit is a magmatic hydrothermal contact metasomatic type ore deposit.