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The chemical formula of mineral Bruggenite is indicated by Ca(IO3)2•(H2O). Mineral Bruggenite is usually found in veins with nitratine and impregnating the enclosing decomposing rhyolite tuff in a small basin filled with nitrate caliche. This mineral is commonly found at its type of locality at Pampa Pique III, about one km north of Oficina Lautaro, Taltal district, Antofagasta, Chile. Bruggenite was named for Juan Bruggen (1887-1953), University of Chile, who wrote the first textbook on the geology of Chile. Bruggenite 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. Bruggenite is usually found colorless in hand sample. Sometimes it can be also found bright yellow in appearance. The specific gravity measure of mineral Bruggenite is also commonly found 4.24 grams per cubic centimeters. Most crystals of mineral Bruggenite are usually found transparent to translucent in appearance. The hardness measure of mineral Bruggenite is usually found 3.5 when evaluated using the Mohs scale method. Mineral Bruggenite is also most commonly found exhibiting vitreous or glassy luster when viewed in reflected light of polarizing microscope used in the field of optical mineralogy. Mineral Bruggenite is also commonly found showing biaxial negative figure when evaluated between crossed nicols of polarizing microscopes. It is commonly found showing 0.0450 birefringence. Bruggenite is also commonly found not radioactive.



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Tuesday, March 29th, 2011 at 5:55 am
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Optical Mineralogy
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