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Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

The chemical formula of mineral Jentschite is indicated by TlPbAs2SbS6. This mineral is commonly found from its type of locality at Lengenbach, Binntal, Switzerland. Mineral Jentschite was named after Franz Jentsch (1868-1908), head of the Binn syndicate that worked the sulfosalt deposit at the Lengenbach quarry. Jentschite is known to crystallize in the monoclinic system of crystal formation. In optical mineralogy, the monoclinic system of crystal formation comprises crystals having three axes of unequal lengths. Two of which are usually found in a position that is oblique or not perpendicular to one another. However, both of which are commonly found perpendicular to the third axis. Jentschite is known to have perfect cleavage in one direction which can be found more clearly visible when viewed with the aid of petrographic polarizing microscopes for optical mineralogy. It is commonly found colored black or dark red in hand sample. The density measure of mineral Jentschite is usually found 5.24 grams per cubic centimeters. Most crystals are found opaque in appearance. This mineral is commonly found with brittle fracture. This is generally displayed by glasses and most non-metallic minerals. The hardness measure of mineral Jentschite is usually ranging from 2 to 2.5 when evaluated using the Mohs scale method. Most crystals of mineral Jentschite are found submetallic in appearance. Mineral Jentschite is also found leaving a dark red streak when rubbed on white porcelain streak plate. Jentschite is found to be not radioactive.



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Friday, September 30th, 2011 at 3:12 am
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Optical Mineralogy
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Click Here For Best Selection Of High Quality Polarizing Microscope