The Discovery of the “Pamir-Type” Iron Deposits in Taxkorgan Area of Xinjiang and Its Geological Significance

详细信息   

• 责任者：Yan Changhai (Henan Institute of Geological Survey ; Zhengzhou 450007 ; China) ; Chen Caojun
• 刊名：Geological Bulletin of China
• 出版年：2012
• 卷期：31(4)
• 关键词：铁矿 ; iron ores ; 新疆 ; Xinjiang
• 页码：p.549-557
• 图表：4 illus., 2 tables, 1 plate, 17 refs.
• 分类号：1001
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

摘要

A series of relatively large-size magnetite deposits were discovered in Taxkorgan area of western Kunlun, Xinjiang, e.g., Laobing iron deposit, Qiaopukalimo iron deposit, Yelike iron deposit and Jiertiekegou iron deposit. With the Laobing iron deposit as an example, the authors studied geological features, metallogenic epoch and genesis of this kind of ore deposit. The results show that the ore deposit occurs in biotite quartz schist of Bulunkuole Group, where magnetite mineralization is extensively developed with the syngenetic combination of magnetite-pyrite-gypsum-anhydrite. LA-ICP-MS U-Pb isotopic dating of detrital zircon shows that iron formation of Bulunkuole Group was formed in Early Paleozoic, and the ore deposit was genetically of marine volcanic sedimentary magnetite type subjected to later superimposed reformation of some regional metamorphism