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The chemical composition of mineral Calcurmolite is inidcated by the formula Ca(UO2)3(MoO4)3(OH)2•11(H2O). This mineral is most commonly found occuring at oxidation zone of a U-Mo deposit. Calcurmolite is most commonly found from Russia. Mineral Calcurmolite was named for the composition. Calcurmolite 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. Calcurmolite is usually found colored honey yellow in hand sample. The crystal habit of mineral Calcurmolite as described in the field of optical mineralogy usually includes massive to lamellar forms showing distinctly foliated fine-grained forms. Sometimes they can be also found prismatic with crystals shaped like slender prisms like that of tourmaline. Mineral Calcurmolite is commonly found fluorescent commonly shoowing bright yellow green color in short wave ultraviolet light. Calcurmolite is also showing biaxial negative figure when viewed between crossed nicols of pollaizing microscopes for optical mineralogy. Calcurmolite is also showing a birefringence of 0.0860. Calcurmolite is found pleochroic showing colorless, pale yellow or yellow appearance. Mineral Calcurmolite has very strong radioacivity.



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Friday, April 29th, 2011 at 8:34 am
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Optical Mineralogy
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