The study of Nickel Sulfuric and Platinum group in Abdasht ultramafic massive
محل انتشار: دوفصلنامه زمین شناسی ژئوتکنیک، دوره: 4، شماره: 1
سال انتشار: 1387
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 137
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شناسه ملی سند علمی:
JR_JGEO-4-1_002
تاریخ نمایه سازی: 30 آبان 1400
چکیده مقاله:
The Abdasht massive peridotite is a part of the Esphandagheh ophiolite complex. Constituents of the Abdasht rocks are mostly dunite and harzburgite, which occasionally convert to lehrzolite and wherlite. Chromite deposits occur in ۱۵ mineralized horizons. Considering that some of the world's ophiolite complexes have worthwhile resources of PGM, Ni, and Co, in addition to Cr, some investigations into geochemistry and ore microscopy for identifying sulfuric minerals have been carried out. The results of these studies reveal the presence of Nickel sulphuric minerals, especially Pentlandite in this region, which is found in two different parts: host rocks of the chromite deposits and also chromite lenses. The amount of PGM is very small (at most ۸۳ ppb in Kamalabad mine) and often exists in the form of inclusion and fine grain in chromites and silicate gangue. Other sulfuric minerals such as pyrrhotine, pyrite, millerite, chalcopyrite, chalcocite, nickel pyrite, chalcopentlandite, vallerite etc. were found. These sulfuric minerals (Ni, Co and PGM) never consist of worthwhile resources and their economic value is negligible.
کلیدواژه ها:
نویسندگان
Siamak Bagherian
Department of Geology, Faculty of Basic Science, Islamic Azad University - Aligudarz Branch, Aligudarz, Iran
Esmail Darvishi
Department of Geology, Faculty of Basic Science, Islamic Azad University - Aligudarz Branch, Aligudarz, Iran