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The chemical composition of mineral Chernikovite is indicated by the formula (H3O)2(UO2)2(PO4)2•6(H2O). Chernikovite is usually found forming at its type of locality at Zod, Armenia and North Aksu, Kazakhstan. This mineal was named for A. P. Chernikov (1927-), Institute of Mineralogy, Geochemistry and Rare Elements, Moscow, Russia. Mineral Chernikovite is known to crystallize in the tetragonal system of crystal formation. In optical mineralogy, this tetragonal system comprises crystals having three axes, which are all in a position perpendicular to one another. Two axes are usually found having the same or equal length. Chernikovite is usually found with perfect cleavage in one direction and distinct in the other, all of which can be found more clearly visible when evaluated closely with the aid of polarizing microscopes for mineralogists. Chernikovite is usually found light yellow in hand sample. Most crystals of mineral Chernikovite are found transparent to translucent in appearaance. The crystal habit of mineral Chernikovite as described in the field of optical mineralogy usually includes micaceous or platy texture with “flexible” plates. The hardness measure of mineral Chernikovite is usually found ranging from2 to 2.5 when evaluated using the Mohs scale method. Mineral Chernikovite is also found fluorescent showing intense yellow green color in ultraviolet light. Mineral Chernikovite is commonly found exhibiting vitreous or glassy luster in reflected light of polarizing microscopes. Mineral Chernikovite is commonly found leaing a yellow white streak when rubbed on white porcelain streak plate. Chernikovite is also found slightly dichroic. Mineral Chernikovite is commonly found showing uniaxial negative figure with 0.0110 birefringence when evaluated between crossed nicols of polarized microscopes. Mineral Chernikovite has a very strong radioactivity.



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Thursday, June 30th, 2011 at 3:20 am
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Optical Mineralogy
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