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The chemical composition of mineral Asselbornite is indicated by the formula (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12•3(H2O). Asselbornite is usually found as a museum specimen initially, and in quartz gangue from a mine. This mineral is most commonly found at its type of locality at Walpurgis vein, Weisser Hirsch, Neustadtel, Schneeberg, Saxony, Germany. Mineral Asselbornite was named for Eric Asselborn (1954-), a mineral collector and a surgeon. Asselbornite was first found at Montrevel-en-Bresse, Dijon, France. Mineral Asselborniteis 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 Asselbornite has no cleavage display even if it is evaluated closely with the aid of petrographic polarizing light microscope used in the field of optical mineralogy. Asselbornite is also most commonly found colored brown or lemon yellow in hand sample. Most crystals of mineral Asselbornite are found translucent in appearance. The crystal habit of mineral Asselbornite as described in the field of optical mineralogy usually include euhedral crystals which occurs as well-formed crystals showing good external form when viewed with the aid of polarizing microscope. The hardness measure of mineral Asselbornite when it is evaluated using the Mohs scale method is usually found 3. Mineral Asselbornite is also most commonly found showing adamantine to greasy luster when viewed in reflected light of polarizing microscope for mineralogists. Mineral Asselbornite is also most commonly found leaving lemon streak when rubbed on white porcelain streak plate. Asselbornite is found as isotropic mineral. Asselbornite is found to be a radioactive mineral after evaluation.



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Thursday, September 30th, 2010 at 3:15 pm
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Optical Mineralogy
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