Mineral Inclusions in Corundum from Chromitites in the Kangjinla Chromite Deposit, Tibet
详细信息
- 责任者：Xu Xiangzhen (State Key Laboratory of Continental Tectonics and Dynamics ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Yang Jingsui
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(6)
- 关键词：铬铁矿矿床 ; chromite deposit ; 矿物包裹体 ; mineral inclusions ; 西藏 ; Tibet
- 页码：p.1867-1877
- 图表：illus., 4 tables, 36 refs.
- 分类号：1001
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Large amounts of microdiamond and moissanite have been recovered from the Kangjinla chromitite,Luobusa ophiolite, Tibet,indicating a high reduced and high pressure environment they formed. In this paper many corundum grains and their mineral inclusions have been studied by EPMA and EDS. The inclusions contain simple oxides ( such as rutile) ; nature titanium; alloys such as Ti-N,Ti-Si,Ti-C,Ti-Si-P,Ti-B and so on; REE-bearing silicate minerals,as well as some unknown minerals. Combined the previous study,we conclude that the corundum and their inclusions formed in a high reduced and high pressure environment atdeep mantle,and the corundum in the Kangjinla chromitite might be regarded as a new mineral index of a high-pressure environment.
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