Rock Geochemistry of Laoyaquan Alkaline Granites and Related Tin Deposits in Eastern Junggar, Xinjiang
详细信息
- 责任者：Wang Lijuan (Beijing Institute of Geology of Mineral Resources ; Beijing 100012 ; China) ; Wang Jingbin
- 刊名：Mineral Deposits
- 出版年：2012
- 卷期：31(3)
- 关键词：碱性岩 ; alkali rocks ; 锡矿 ; tin ores ; 准噶尔盆地 ; Junggar Basin
- 页码：p.438-448
- 图表：5 illus., 1 table, 26 refs.
- 分类号：1001,0801
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
摘要
Laoyaquan alkali granite complex and such bodies as alkali-rich small granite porphyry pluton, greisen-type tin ore body and quartzite tin ore body that have intruded the alkali granite possess similar REE distribution patterns. They all show strong depletion of Eu, and their trace element spidergrams and other geochemical characteristics are similar too. Therefore, the phenomena that crustal constituents contaminated alkaline magma at the late stage of the fractional crystallization and the magma evolved in the acidic direction might have constituted one of the important prerequisite for alkali granite mineralization in the tin deposit.