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The chemical formula of mineral Claraite is indicated by (Cu,Zn)3(CO3)(OH)4•4(H2O). Mineral Claraite is known to be secondary mineral. Mineral Claraite is commonly found from its type of locality at Clara Mine, Black Forest, Wolfach, Schwarzwald, Baden-Württemberg, Germany. Mineral Claraite was named for the locality. Mineral Claraite 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 Claraite is usually found showing perfect cleavage in one direction which can be found more clearly exhibited with the aid of polarized microscopes. Mineral Claraite is usually found colored blue in hand sample. The density measure of mineral Claraite is usually found 3.35 grams per cubic centimeters. Most crystals of mineral Claraite are found transparent in appearance. The crystal habit of mineral Claraite as described in the field of optical mineralogy usually includes aggregates made of numerous individual crystals or clusters. Sometimes it can be also fibrous in form where crystals are made up of fibers. Mineral Claraite can be also found radial in form where crystals radiate from a center without producing stellar forms just like stibnite. The hardness measure of mineral Claraite is usually found 2 when measured using the Mohs scale method. Mineral Claraite is commonly found showing vitreous or glassy luster when viewed in reflected light of polarizing microscopes. Mineral Claraite is also found dichroic, showing colorless, pale green or bluish green color. Mineral Claraite is also commonly found showing uniaxial negative figure with 0.1060 birefringence when evaluated between crossed nicols of petrographic polaarizing microscopes used in the field of optical mineralogy. Mineral Claraite is found to be not radioactive.



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Friday, July 29th, 2011 at 8:04 am
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Optical Mineralogy
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