Variscite occurrence in Kushk deposit, Bafg (Yazd Province)
Publish place: Journal of Geotechnical Geology، Vol: 3، Issue: 4
Publish Year: 1386
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JGEO-3-4_004
تاریخ نمایه سازی: 30 آبان 1400
Abstract:
Kushk Deposit is located in the Central Iran tectonic zone and is a part of the Bafg block (Bafg-Saghand Belt). öDezu Formation in the Kushk area are widespread occurrence The Dezu Formation in the Kushk area is of widespread occurrence and includes terrigenous, carbonate and volcanic rocks. The black shale, which belongs to the Dezu Formation hosts Pb-Zn mineralization (Galena, Pyrite, Sphalerite). Variscite is formed generally as nodules, open space filling and veinlets in ore bearing parts of deposit. In supergene environment, oxidation of sulphide minerals releases H۲SO۴ bearing fluids. The leaching of Al(OH)۳ and phosphates from the host rock in acidic environment and reactions between them produce Variscite.
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Authors
Shahrzad Sherafat
Department of Geology, Faculty of Science, Islamic Azad University - Qanat Branch, Arak, Iran
Esmat Mohammady Nasab
Department of Chemistry, Faculty of Science, Islamic Azad University - Qanat Branch, Arak, Iran
Mohammadali Mackizadeh
Department of Geology, Faculty of Science, University of Isfahan, Isfahan, Iran
Mahnaz Khodami
Department of Geology, Faculty of Science, Yazd University, Yazd, Iran