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Thursday, 24 December 2009 10:29 |
Titanium Content of a Chloritoid-Quartz-Ilmenit Band in Ophiolitic Melange near Prang Ghar, NW Pakistan.
Titanium is a valuable engineering metal and has many uses. In the greenstone of the Indus Suture mélange near Prang Ghar, a 200m long and 1 to 3.5 m thick band consists essentially of chloritoid (31 to 59 vol. %) quartz (10 to 27%), and ilmenite+Fe-oxide (8 to 25%). The rocks contain very high Al2O3, total Fe2O3 and TiO2, and low SiO2, CaO, MgO and alkalis. The unusual composition may have formed from basaltic precursors of the greenstone by weathering (laterization) or alteration, followed by greenschist facies metamorphism. Chemical analysis of three samples, containing 5 to 10 wt. TiO2 % warrant further investigation of the area.
Author(s):
M. Rafiq, Department of Geology, University of Peshawar. Peshawar.
Qasim Jan, NCE Geology, University of Peshawar, Peshawar.
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Last Updated on Thursday, 24 December 2009 10:37 |
