Fluid inclusion constraints on the genesis of the Puladi muscovite deposit in Gongshan County, Yunnan Province

1st International Global on Renewable Energy and Development

Yin, Qiong^1 ; Liu, Wei^1

College of Mining, Kunming Metallurgy College, YunNanKunMing, China^1

关键词: Fluid inclusion;    Homogenization temperatures;    Low salinity;    Medium temperature;    Metallogenic belt;    Ore-forming fluid;    Ore-forming geological conditions;    Yunnan province;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/100/1/012210/pdf
DOI  :  10.1088/1755-1315/100/1/012210

来源: IOP

【 摘 要 】

This paper focuses on beryl mines in the Maji region of Yunnan Province, which are characterized by fluid inclusions. Based on petrography theory, mineralogy, and ore-forming geological conditions, beryl can be divided as CO2and CO2-H2O inclusions. In addition, the characteristics of inclusions in the coordinate of A/B is summarized. The homogenization temperature of fluid inclusions in the coordinate of A ranges from 250 °C to 397 °C, while the salinity of fluid inclusions ranges from 0.18% to 4.27%. By contrast, the homogenization temperature in the coordinate of B ranges from 210 °C to 340 °C, and the salinity is from 0.22% to 5.11%. The pressure of ore-forming fluid in the coordinate of A/B is approximately 83 MPa with densities of 0.8034 g/m3and 0.8363 g/m3, which are characteristic of mediumtemperature, low-salinity, and medium-density fluids. Based on Raman spectra and different metallogenic depths, the two types of beryl belong to different metallogenic belts. The beryl deposits in Gongshan are of medium-Temperature gas-hydrothermal type.