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The chemical composition of mineral Borishanskiite is indicated by the formula Pd1+x(As,Pb)2, x = 0-0.2. Borishanskiite is also commonly found in massive and disseminated Cu-Ni sulfide ores. Borishanskiite is usually found at its type of locality at Oktyabr mine, Talnakh area, Noril’sk region, western, USSR. Borishanskiite was named for S.S. Borishanski, Soviet mineralogist. Borishanskiite is known to crystallize in the orthorhombic system of crystal formation. In optical mineralogy, this orthorhombic crystal system comprises crystals having three mutually perpendicular axes, of which all are of different lengths.

            Mineral Borishanskiite is usually found colored gray in hand sample. It is more interesting when evaluated with the aid of polarized microscope for mineralogists. This mineral is usually found opaque in appearance. Mineral Borishanskiite is most commonly found showing brittle fracture which is generally displayed by glasses and most non-metallic minerals. The crystal habit of mineral Borishanskiite as described in the field of optical mineralogy usually includes microscopic crystals which can be only made visible when viewed under polarizing microscopes. The hardness measure of mineral Borishanskiite is usually found 4 when evaluated using the Mohs scale method. Borishanskiite is also most commonly found exhibiting metallic luster when viewed in reflected light of polarized microscopes. Borishanskiite has barely noticeable to moderate anisotrophism usually found in yellowish gray tones. Interference color exhibited by Borishanskiite is usually found gray white. Mineral Borishanskiite is a non-radioactive mineral as evaluated.



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Saturday, February 19th, 2011 at 7:53 am
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Optical Mineralogy
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