Geological Features and Metallogenic Mechanism of the Nieèr Co Magnesium Borate Deposit, Tibet

• 责任者：Liu Xifang (Institute of Mineral Resources ; CAGS ; R & D Center for Saline Lake and Epithermal Deposit ; CAGS ; Key Laboratory of Saline Lake Resources and Environment ; Ministry of Land and Resources ; Beijing 100037 ; China) ; Zheng Mianping
• 刊名：Acta Geologica Sinica
• 出版年：2010
• 卷期：84(11)
• 关键词：镁矿 ; magnesium ores ; 硼矿床 ; boron deposit ; 西藏 ; Tibet
• 页码：p.1601-1612
• 图表：6 illus., 1 table, 40 refs.
• 分类号：1000
• issnNo：ISSN0001-5717
• isbnNo：CN11-1951/P

The Nieèr Co Mg borate deposit is a Mg borate deposit discovered recently. The authors studied regional geological data and geological features of the deposit, compared this deposit with other borate deposits in China and abroad, analyzed the source of ore-forming materials and metallogenic mechanism, and summarized the metallogenic pattern. The Nieèr Co Mg borate deposit formed in the upper-middle Holocene; its host rocks are mainly divided into three horizons: the upper and middle ore-bearing horizons are dominant minable horizons and the lower ore-bearing horizon is a subordinate ore-bearing horizon. The ore types include kurnakovite granular aggregates, mirabilite-bearing kurnakovite, beehive/massive pinnoite and mixed ore type.