- 责任者：Xu Leiluo (State Key Laboratory of Ore Deposit Geochemistry ; Institute of Geochemistry ; Chinese Academy of Sciences ; Guiyang 550002 ; China) ; Bi Xianwu
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(10)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 斑岩钼矿床 ; porphyry molybdenum deposit ; 金矿 ; gold ores ; 容矿岩 ; host rocks
- 页码：p.3109-3122
- 图表：8 illus., 3 tables, 68 refs.
- 分类号：1001
- 出版序号：520
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
The Tongchang porphyry Cu(Mo-Au) deposit is located in southern segment of the Jinshajiang-Red River alkali-rich intrusive belt. The Tongchang quartz syenite porphyry intrusion is one important member of the Jinshajiang-Red River alkali-rich intrusions. Detailed geochemical study on the Tongchang quartz syenite porphyries indicates that it is characterized by high alkali, metaluminous to weakly peraluminous and enrichment in potassium, and belongs to shoshonitic rock. The geochemical characteristics of host porphyries and ore-forming scales of the Tongchang, Yulong and Machangqing porphyry Cu(Mo-Au) deposits have some notable diversities, which may have close relationship with the partial melting degrees and crustal contaminating degrees for their host porphyry sources.