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The chemical formula of mineral Bornhardtite is indicated by CoCo2Se3. Mineral Bornhardtite is usually known to be of hydrothermal origin. This mineral is most commonly found at its type of locality at the Trogtal quarry, near Lautenthal, and at Tilkerode, Harz, Germany. Bornhardtite was named after Dr. Wilhelm Bornhardt (1864-?), a German student of ore deposits. Mineral Bornhardtite is known to crystallize in the isometric system of crystal formation. In optical mineralogy, this isometric crystal system comprises crystals having three axes, all of which are perpendicular to one another and all are found equal in lengths.

            Mineral Bornhardtite is most commonly found colored copper or pink in hand sample which can be more fascinating when viewed closely with the aid of polarizing microscope used in the field of optical mineralogy. Mineral Bornhardtite is also commonly found having a hardness measure of 4 when evaluated using the Mohs scale method. Most Bornhardtite crystals are found opaque in appearance. Bornhardtite is also commonly found showing metallic luster when viewed in reflected light of polarizing microscope used in the field of optical mineralogy. Mineral Bornhardtite is found to be not radioactive after several chemical evaluations.



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Saturday, February 19th, 2011 at 7:43 am
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Optical Mineralogy
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