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The chemical formula of mineral Calciouranoite is indicated by (Ca,Ba,Pb)U2O7•5(H2O). This mineral is usually found in felsite stringers, deep in the oxidation zone of a U-Mo deposit, in water-saturated ore-bearing faults. Mineral Calciouranoite is usually found at its type of locality at Streltsovskoe U-Mo deposit, eastern Transbaikal, Russia. This mineral was named for CALCIum and URANium in the composition. Mineral Calciouranoite is known to crystallize in the triclinic system of crystal formation. In optical mineralogy, this triclinic crystal system commonly comprises crystals having three axes, of which all are unequal in length and are positioned oblique to one another.

Mineral Calciouranoite is most commonly found showing distinct cleavage in two different directions which can be seen more clearly visible when viewed closely with the aid of petrographic polarizing light microscope used in the field of optical mineralogy. Mineral Calciouranoite is usually found colored brown, orange, orange brown, or red orange in hand sample. The specific gravity measure of mineral Calciouranoite is usually found 4.62 grams per cubic centimeters. Most crystals of mineral Calciouranoite are found translucent in appearance. The crystal habit of mineral Calciouranoite as described in the field of optical mineralogy usually includes acicular forms occuring as needle-like crystals. This can be also found prismatic forming crystals shaped like slender prisms like tourmaline. Sometimes it can be also found forming radial forms with crystals radiating from a center without producing stellar forms like stibnite. The hardness measure of the mineral is usually found 4 when the mineral is evaluated using the Mohs scale method. It is also most commonly found exhibiting greasy or oily luster when viewed in reflected light of polarized microscope. Mineral Calciouranoite is commonly found showing biaxial negative figure when evaluated between crossed nicols of polarized microscope used in the field of optical mineralogy. Calciouranoite is commonly found showing 0.1100 birefringence. Mineral Calciouranoite is a pleochroic mineral showing deep lemon yellow and very pale yellow color. Calciouranoite is a radioactive as evaluated.



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Monday, August 30th, 2010 at 6:08 am
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Optical Mineralogy
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