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Click Here For Best Selection Of High Quality Polarizing Microscope

Click Here For Best Selection Of High Quality Polarizing Microscope

The chemical formula of mineral Bustamite is indicated by (Mn,Ca)3Si3O9. This mineral is usually occuring in manganese ores formed by metamorphism of manganese-bearing sediments with attendant metasomatism. This is considered as a “type” material, from Tetela de Ocampo, Hidalgo, Mexico, is a mixture. Bustamite was named for General Anastasio Bustamente (1780-1853), of Mexico. Mineral Bustamite is known to crystallize in the triclinic sysem 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. Bustamite is usually found showing perfect cleavage in one direction and good in two other directions, all of which are found more clearly visible when viewed with the aid of polarizing microscopes for mineralogists. Mineral Bustamite is commonly found colored brown red, light pink or pink in hand sample. The denssity measure of mineral Bustamite is usually found ranging from 3.32 to 3.43 grams per cubic centimeters, showing an average of 3.37. Most crystals of mineral Bustamite are found transparent to translucent in appearance. The hardness measure of mineral Bustamite is usually found ranging from 5.5 to 6.5 when measure using the Mohs scale method. Mineral Bustamite is found to be a fluorescent minerals commonly showing pink red color in long wave ultraviolat light. Bustamite is also commonly found showing vitreous or glassy luster when viewed in reflected light of polarizing microscopes. Bustamiteis also commonly found leaving white streak when rubbed on white porcelain streak plate. It is also commonly found showing biaxial negative figure when evaluated closely between crossed nicols of polarized microscopes. Bustamite is also showing birefringence ranging from 0.0130 to 0.0150. Mineral Bustamite is usually exhibiting colorless pleochroism when viewed with the aid of petrographic polarizing microscopes. Bustamite is found to be not radioactive.



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Friday, April 29th, 2011 at 8:00 am
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Optical Mineralogy
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Click Here For Best Selection Of High Quality Polarizing Microscope