Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Facies, Stable Isotopes, and Genesis of Kuh –E-Surmeh Pb-Zn Deposit (Dalan Formation) in the South of Firouzabad, Fars Province

Document Type : Original Research Paper

Authors
Mohammad Poosti 1
Iraj Rasa 2
Mohammad Hosein Adabi 2
1 Hormozgan University
2 Shahid Beheshti University
Abstract
Pb-Zn ore deposit in Kuh-e-Surmeh is located  at about 33 km, south of Firouzabad. The host rocks of the ore are dolostones  of the lower part of Dalan Formation. The ore body in the dolostones occurs in three ore-bearing  horizons. The main facies in the area are as follows: siltstone, sandstone, biomicrite, intrasparite, dolomicrosparite, dolosparite, dolomicrite, gypsum and anhydrite. Dolosparite is the main facies in  the main ore horizons. Siliciclastic and carbonate facies are deposited in intertidal to supratidal environment. The mineralogy of the deposit consists of sphalerite, galena, pyrite, cerrusite, anglesite, covellite, azurite, hematite, chalcocite, dolomite, calcite, barite, and gypsum. Mineralization  occures as void  filling, replacement and dissemination fabrics. In some cases ore deposits fills dissolution breccia and fractures. Stable isotope studies show that dolomite has been altered by fluids with relatively high salinity and temperature  of about 100C°. Field observation, texture and structure of ore bodies, type of carbonate facies, paragenetic sequences, fluid inclusions and oxygen and carbon isotopes indicate that Kuh-e-Surmeh Pb-Zn deposits is similar to MVT type deposits.                                                                                    
Keywords
Facies
Stable Isotopes
Pb-Zn
Kuh –E-Surmeh

Subjects

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Scientific Quarterly Journal of Geosciences
Volume 15, Issue 57
Autumn 2006, Vol. 15, No. 57
Autumn 2006
Pages 40-53