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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 composition of mineral Blatterite is indicated by the formula (Mn++,Mg)35Sb3(Mn+++,Fe+++)9(BO3)16O32. Blatterite is usually found forming from metamorphosed Fe-Mn orebodies. Blatterite is also commonly found at its type of locality at Kittel mine, Varmland, Sweden. Blatterite was named for Fritz Blatter (1943-), German mineral collector, who discovered the mineral. Blatterite is known to crystallize in the orthorhombic system of crystal formation. In optical mineralogy, this orthorhombic crystal system comprises crystals having three mutually perpendicular axes, of which all are of different lengths.

            Blatterite is commonly found showing perfect cleavage in one direction which can be noticed more clearly visible when viewed closely under polarizing microscope used in the field of optical mineralogy. Blatterite is most commonly found colored black in hand sample.  The specifc gravity measure of the mineral is usually found 4.7 grams per cubic centimeters. Most crystals are found opaque in appearance. The crystal habit of the mineral as described in the field of optical mineralogy usually includes prismatic in form showing crystals shaped like slender prisms. The hardness measure of the mineral when evaluated using the Mohs scale method is usually found 6. Blatterite is also found showing submetallic luster when viewed in reflected light of polarizing microscope for mineralogists. It is also commonly found leaving a brown streak when rubbed on white porcelain streak plate. Blatterite is also usually found showing biaxial negative figure when viewed closely between crossed nicols of polarized microscopes. It is also showing 0.0900 birefringence. Blatterite is found to be weakly to distictly anisotrophic showing shades of grayish brown when viewed with the aid of petrographic polarizing microscopes used in optical mineralogy. Bireflectance is commonly found buff, creamy buff and sometimes pale buff. Blatterite is sometimes showing red orange internal reflections. Blatterite is a non-radioactive mineral as evaluated.



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Saturday, January 15th, 2011 at 3:39 am
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Optical Mineralogy
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