Physico-chemical characteristics of Au ore-bearing fluids in Dak Rong-A Luoi district interpreted from microthermometric analyses of fluid inclusions

http://jmes.humg.edu.vn/en/archives?article=535
  • Affiliations:

    1 Trường Đại học Mỏ - Địa chất;
    2 Tổng cục Địa chất & Khoáng sản Việt Nam

  • Received: 11st-Dec-2015
  • Revised: 11st-Jan-2016
  • Accepted: 30th-Jan-2016
  • Online: 30th-Jan-2016
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Abstract:

The microthermometric analysis results of fluid inclusions trapped in Au-mineralized quartz in Dak Rong-A Luoi district show two homogenisation temperature asemblages which indicate two mineralisation stages. In the fist stage, the ore accumulation occurs as the result of a mixture between metamophic (majority) and magmatic (minority) fluids, in conditions of high temperature (220-380oC), low-medium salinity (<16.3%), high depth (2-3.8km) and low fluid density (0.65-0.9g/cm3. In the later stage, the ore accumulated as the result of a mixture between metamophic fluids (majority) and meteoric water (minority), which is characterized by low temperature (125-200oC), low salinity (<10%), low-medium depth (1-2km) and high fluid density (0,9-1g/cm3).

How to Cite
Nguyen, L.Quang, Tran, D.My, Le, T.Xuan, Le, T.Thi and Nguyen, T.Tien 2016. Physico-chemical characteristics of Au ore-bearing fluids in Dak Rong-A Luoi district interpreted from microthermometric analyses of fluid inclusions (in Vietnamese). Journal of Mining and Earth Sciences. 53 (Jan, 2016).