Study On Mineralogy of Cr-Spinel and Genesis of Luobusha Chromite Deposit in South Tibet
详细信息
- 责任者：Zhou Erbin (East China Institute of Technology ; Fuzhou 344000 ; China) ; Yang Zhusen
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(7)
- 关键词：铬铁矿矿床 ; chromite deposit ; 尖晶石 ; spinel ; 西藏 ; Tibet
- 页码：p.2060-2072
- 图表：4 illus., 1 table, 29 refs.
- 分类号：1001
- 出版序号：574
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
The Luobusha chromite deposit, which is the largest podiform deposit with maximum study in China, occurred in a fresh mantle peridotite in the east part of Yarlung Zangbo ophiolite belt in South Tibet. Comprehensive study suggested that the chromium element of chromitite coming from primitive mantle itself, and mainly coming from the regulation and reformation of accessory spinel and the incongruent melting of the two pyroxenes (chromium diopsite and enstatite), it was inferred that the primitive Cr-riched minerals in mantle may be the Cr-riched octahedral silicate minerals. The Luobusha harzburgite phase belt beneath the contact face with the dunite phase is the favorable target for searching large-scale chromite deposit.
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