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The chemical formula of mineral Deloryite is indicated by Cu4(UO2)(MoO4)2(OH)6. This mineral is commonly found occurring in oxidized portion of a uranium deposit in sandstone. This mineral is also commonly found from its type of locality at Cap Garonne mine, near le Pradet, Var, France. Mineral Deloryite was named for Jean Claude Delory (1953- ), French mineral collector and land surveyor, Toulon, France, who collected the first specimens. Deloryite 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. Mineral Deloryite is commonly found showing a perfect cleavage on one direction. Mineral Deloryite is commonly found colored dark green in hand sample. The density measure of mineral Deloryite is 4.9 grams per cubic centimeters. Most crystals of mineral Deloryite are found transparent to subopaque in appearance. The hardness measure of mineral Deloryite is found 4 when evaluated using the Mohs scale method. Mineral Deloryite is also found showing vitreous or glassy luster in reflected light of polarizing microscope for mineralogists. Mineral Deloryite is also found leaving a green streak when rubbed on white porcelain streak plate. Mineral Deloryite is also found exhibiting biaxial figure with 0.0600 birefringence when specimen is evaluated between crossed nicols of polarizing microscope used in the field of optical mineralogy. Deloryite is also found showing very strong radioactivity when chemically evaluated.



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Tuesday, January 31st, 2012 at 4:21 am
Category:
Optical Mineralogy
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