On Characteristics of Metallogenic Fluid and Genesis of Ximeng Amo Tin Deposit in Yunnan
详细信息
- 责任者：Zuo Qionghua (Yunnan Vocational College of Land and Resources ; Kunming 650217 ; China) ; Zhu Wanming
- 刊名：Journal of Geology
- 出版年：2013
- 卷期：37(2)
- 页码：p.273-278
- issnNo：ISSN1674-3636
- isbnNo：CN32-1796/P
摘要
The authors analyzed the metallogenic geological settings,geological properties,the composition,pH value,sulfur fugacity of the metallogenic fluids.The research demonstrated that Amo tin deposit was mainly occurred in schist in lower Yonglong Formation of Ximeng Group and granulite in upper Daheishan Formation of Ximeng Group with obvious strata bound properties;ore-forming materials were mainly derived from hidden granite rock mass;metallogenic fluids evolved from weak alkali to weak acid and went through courses of migration,boiling and precipitation,showing characteristics of multi-component,high salinity and high mineralization agent.The homogenization temperature of inclusions in the main mineralization stage was concentrated in 380 ～ 430 ℃,metallogenic depth was about 3.9 km,fluid density ranged from 0.89 ～ 0.98 g /cm 3,fluid salinity was 35%.The genetic type of the deposit belonged to hydrothermal gas fluid tin deposit.
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