DATA CONCERNING THE MINERALOGY OF STERILE
RESULTED FROM PIT COAL WASHING AT WESTERN
PETROSANI BAZIN PREPARATIONS
The mineral composition of the sterile dumps formed during coal
exploitation and sorting was established during this research. There are found
quartz, potassium feldspar, biotite and calcite. The X-ray diffraction analysis
point out these minerals as well as pronounced crystalline state of the dumped
sterile. The optical mineralogical microscopy reveals the sterile particles
morphology, equiaxial for quartz and calcite and tabular – philliphorm for the
biotite and potassium feldspar. All issued minerals belong to the non coal
intercalations on the geological coal layers.
Cuvinte cheie: steril, huilă, preparaţie
Keywords: sterile, coal, preparation
