Evolution of ore-forming fluid in Antimony Sirzar mineral, Torbet Jam

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Authors

1 Lorestsn university

2 Department of Geology, Faculty of Earth Sciences, Lorestan University, Lorestan, Iran

3 Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Abstract

Antimony Sirzar mining area is located in the boundary between Central Iran tectonic zone and Binalud zone in Western Torbett Jam.. Stibnite mineralization together with galena, chalcopyrite, iron oxide and hydroxide minerals, malachite, azurite and waste minerals of quartz, barite and calcite form mineral paragenesis. According to the petrographic studies of fluids involved in calcite mineral, 8 types of fluids were identified based on phase, which include: the first type is single-phase liquid, the second type is single-phase gas, the third type is two-phase rich in liquid, and the fourth type is two-phase rich in gas. , the fifth type of two immiscible phases, the sixth type of three phases with a solid phase, the seventh type of three-phase salt, the eighth type of multi-phase salt. According to the microthermometry studies of fluid intermediates, the homogenization temperature varies between 66 and 266 degrees Celsius, and the melting temperature of the last ice crystal is -1 to -12 degrees Celsius, and the salinity is between 1.3 and 15 percent by weight equivalent to salt. Also, the dispersion of the salinity trend of the involved fluids from low to high indicates mineralization in cooling conditions and mixing of atmospheric water with magma water.. Sulfur is attributed to the sedimentary rocks of this region. According to the information obtained in this research, the deposit under study is a deposit related to metamorphism

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Main Subjects

Advanced Applied Geology

Articles in Press, Corrected Proof
Available Online from 21 January 2025

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