Petrographic and Geochemical Study of the Hour Barite Deposit, Kerman Province

Subject Areas : The Application of Chemistry in Environment

borzoo rahim dashti ^{1 *} , فرهاد احیا ² , sara maliki kheyme sari ³ , Alireza Zarasvandi ⁴

1 -
2 - عضو هیت علمی دانشگاه آزاد بهبهان
3 - geology department,,islamic azad university,behbahan branch
4 - Geochemical Exploration - Department of Geology, Faculty of Earth Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran

Received: 2024-10-29 Accepted : 2025-01-08 Published : 2025-01-21

Keywords: Barite, Geochemistry, Petrography,

Abstract :

The Hour Barite deposit, located within sedimentary units of sandstone and shale, has formed as a hydrothermal vein-type deposit in a continental environment. This study aims to investigate the geochemistry and mineralogy of this deposit, as well as to determine its origin and formation conditions. The distribution of rare earth elements (REEs) in the barite samples indicates enrichment of light rare earth elements (LREEs) relative to heavy rare earth elements (HREEs), along with the presence of positive Ce and negative Eu anomalies, which suggest specific oxidation-reduction conditions in the formation environment. The low ΣREEs values and LREE/HREE ratios in the Hour deposit's barites further indicate a hydrothermal origin for this deposit. Additionally, structural and textural evidence, including the presence of multi-phase veins and crystal fragmentation, confirm that barite mineralization in this area was influenced by tectonic processes and hydrothermal fluids. The results of this study suggest that the Hour Barite deposit is similar to other hydrothermal deposits in continental environments, with its origin attributed to hydrothermal fluids that, under active tectonic conditions, led to the formation of barite veins and vein

 

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