Morphological and Geochemical Studies of the Cassiterite in Taoxikeng Tin Deposit, Southern Jiangxi Province, China

详细信息   

• 责任者：Huang Pinyun (State Key Laboratory for Mineral Deposit Research ; School of Earth Sciences and Engineering ; Nanjing University ; Nanjing 210093 ; China) ; Wang Xiang
• 刊名：Geological Review
• 出版年：2012
• 卷期：58(5)
• 关键词：锡矿 ; tin ores ; 锡石 ; cassiterite ; 江西 ; Jiangxi Province
• 页码：p.987-1000
• 图表：6 illus., 1 table, 65 refs.
• 分类号：1001
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

摘要

This paper presents a detailed study on morphology and geochemistry of cassiterite from the ore-bearing quartz veins of the Taoxikeng tin deposit, southern Jiangxi Province. Based on previous studies, it is considered that A-type and B-type cassiterites should be formed at a higher temperature than C-type cassiterite. For the first time, the internal structure within the cassiterite grains was observed by the cathodoluminescence（CL） imaging. The late stage of cassiterite shows a relatively strong CL brightness（light grey to white ） without the oscillatory zoning and the sector zoning. It occurrs either as overgrowth on the early stage of cassiterite, or as veinlet within the early stage of cassiterite. The crystallographic type of the late stage of cassiterite is responsible for C-type cassiterite.  The two stages of cassiterite crystallization are considered to be related to the two stages of magmatic—hydrothermal activities in the Taoxikeng tin deposit, respectively.