Source of Ore-Forming Matter in the Ximeng Amo Tin Deposit in Yunnan
详细信息
- 责任者：Zhu Wanming (Yunnan Land and Resources Vocational College ; Kunming 650217 ; China) ; Zuo Qionghua
- 刊名：Mineral Resources and Geology
- 出版年：2012
- 卷期：26(1)
- 关键词：锡矿 ; tin ores ; 成矿物质来源 ; source of ore material ; 云南 ; Yunnan Province
- 页码：p.7-12
- 图表：3 illus., 6 tables, 10 refs.
- 分类号：1001
- 出版序号：20130268
- issnNo：ISSN1001-5663
- isbnNo：CN45-1174/TD
摘要
///Based on the data of the isotopic competition of oxygen and sulphur, the homogenetic temperature of the mineral inclusions, REE partitioning model, Sn content of granite increase or decrease, it is suggested that metallogenic material in Ximeng Ameau mainly derived from the underlying buried granite mass and surrounding rock. Ore bearing fluid from granitic period transports, fills and replaces along the fault, in this process, because of the pressure which fall sharply, fluid boiling, gas-fluid separation, acidity and alkali differentiation, cassiterite sedimentation. As the temperature drops, fluid chemical properties conversed, appearing multiple mineralization stages of different alteration and mineral association, while different fracture types control the morphology and size of orebody.
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