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Click Here For Best Selection Of High Quality Polarizing Microscope

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The chemical formula of mineral Denningite is indicated by (Mn,Zn)Te2O5. Mineral Denningite is also commonly found occurring at Hydrothermal Au-Te deposit. It can be also found from its type of locality at Moctezuma (Bambolla) mine, 12 km south of Moctezuma, Sonora, Mexico. Mineral Denningite was named for Reynolds McConnell Denning (1916-1967), Professor of Mineralogy, University of Michigan, Ann Arbor, Michigan, USA. Denningite is also known to crystallize in the tetragonal system of crystal formation. In optical mineralogy, this tetragonal system comprises crystals having three axes, which are all in a position perpendicular to one another. Two axes are usually found having the same or equal length. Mineral Denningite is also known to have perfect cleavage on one direction which can be more clearly exhibited when viewed with the aid of polarizing microscope for mineralogists. Mineral Denningite is also found colorless or light green in hand sample. The density measure of mineral Denningite is found to be 5.05 grams per cubic centimeters. Most crystals of mineral Denningite are found transparent in appearance. It is also known to have conchoidal fractures developed in brittle materials characterized by smoothly curving surfaces, similar to quartz. The hardness measure of mineral Denningite is usually found 4 when evaluated using the Mohs scale method. It has adamantine luster when evaluated in reflected light of polarized microscope. Denningite is also found leaving a white streak when rubbed on white porcelain streak plate. This mineral has uniaxial positive figure with 0.1100 birefringence when specimen is evaluated closely with the aid of polarizing microscope for mineralogists. Mineral Denningite is found to be not radioactive when chemically evaluated.



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Tuesday, January 31st, 2012 at 5:37 am
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Optical Mineralogy
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