Authors

Seyed Hassan Tabatabaei, Morteza Tabaei, Mahin Mansouri Esfahani, Hoshang Asadi Harooni

Description

Cheshmeh-Siah Titanium deposit is located in 25 km south of Shahreza town in Isfahan province. It lies in the Shahreza-Abadeh-Hambast belt, a part of Sanandaj-Sirjan Zone. Geological, mineralogical, petrographical and geochemical studies indicated that a strongly altered and fractured combined black clay and diabase sill unit hosted the main titanium mineralization, mostly composed of anatase and ilmenite. Titanium mineralization occurs in large area of 1x0.3 km. XRF analyses of 30 samples, collected from trenches in the mineralized zone, showed an average grade of 8.25% TiO2. It appears that in this deposit a clay unit, which contains Mn nodules, were deposited in Lower Triassic and then intruded by several diabase sills. The whole clay unit and diabase sill was subsequently folded and fractured by tectonic activities and finally altered by weathering processes. Geological, mineralogical, petroraphical …