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Click Here For Best Selection Of High Quality Polarizing Microscope

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The chemical formula of mineral Arhbarite is indicated by Cu2Mg(AsO4)(OH)3. Arhbarite is usually found on massive dolomite. This mineral is most commonly found at its type of locality at Arhbar mine, Bou-Azzer, Morocco. Arhbarite was named for the locality. Arhbarite is known to crystallize in the triclinic system 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.

            Mineral Arhbarite has no cleavage display even if it is closely evaluated with the aid of petrographic polarizing light microscope used in the field of optical mineralogy. It is most commonly found colored blue which can be more interesting when viewed with the aid of polarizing miccroscope for mineralogists. Most crystals of mineral Arhbarite are found translucent in appearance. The crystal habit of Arhbarite as decribed in the field of optical mineralogy usually includes fibrous forms showing crystals made up of fibers. It can be also found forming spherical crystals showing rounded aggregates. Arhbarite is usually found showing vitreous or glassy luster when evaluated in reflected light of polarizing microscope used in the field of optical mineralogy. It is most commonly found leaving a blue streak when rubbed on white porcelain streak plate. Arhbarite is commonly found showing biaxial figure when evaluated between crossed nicols of polarizing microscope. It also shows 0.0200 birefringence. Arhbarite is pleochroic from turquoise blue to deep turquoise blue. Arhbarite is a non-radioactive mineral as evaluated.



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Wednesday, June 30th, 2010 at 1:25 am
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Optical Mineralogy
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