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The chemical composition of mineral Clinokurchatovite is indicated by  the formula Ca(Mg,Fe++,Mn)B2O5. Mineral Clinokurchatovite is usually found as replacement of kurchatovite in boron-bearing rocks. This mineral is commonly found occuring from its type of locality at Sayak-IV boron deposit, northeast Balkhash region, Kazakhstan. Mineral Clinokurchatovite was named as the monoclinic dimorph of kurchatovite. Mineral Clinokurchatovite 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. Clinokurchatovite is usually found with light gray color in hand sample. The densit measure of mineral Clinokurchatovite is usually found ranging from 3.07 to 3.08 grams per cubic centimeters, with an average of 3.07. The hardness measure of mineral Clinokurchatovite is usually found 4.5 when evaluated using the Mohs scale method. Mineral Clinokurchatovite is usually found leaving a gray white streak when rubbed on white porcelain streak plate. Mineral Clinokurchatovite is commonly found showing biaxial negative figure when evaluated betweeen crossed nicols of petrographic polarizing microscopes. Clinokurchatovite is aslo found showing 0.0570 to 0.0600 birefringence. Mineral Clinokurchatovite is found to be not radioactive.



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Saturday, July 30th, 2011 at 3:17 am
Category:
Optical Mineralogy
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