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The chemical formula of mineral Chenite is indicated by Pb4Cu(SO4)2(OH)6. This mineral is usually found forming on partially oxidized galena and chalcopyrite. Mineral Chenite is commonly found from its type of locality at Susanna mine, Leadhills, Scotland. This mineral was named for Tzong T. Chen (1942-), Canadian mineralogist. Chenite 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 Chenite is usually found showing good cleavage in one direction and distinct in the other, all of which can be found more clearly visible when evaluated closely with the aid of polarizing microscopes for mineralogists. Chenite is usually found colored sky blue in hand sample. The density measure of mineral Chenite is usually found 5.98 grams per cubic centimeters. Most crystals of mineral Chenite are found transparent to translucent in appearance. The crystals habit of mineral Chenite as described in the field of optical mineralogy usually included microscopic crystals where crystals are visible only with the aid of polarizing microscopes used in optical mineraogy. Sometimes Chenite can be also found prismatic in form where crystals are shaped like slender prisms like tourmaline. The hardness measure of mineral Chenite is usually found 2.5 when evaluated using the Mohs scale method. Chenite is commonly found showing vitreous to resinous luster when evaluated in reflected light of polarizing microscopes used in the field of optical mineralogy. Chenite iis commonly found leaving pale blue streak when rubbed on white porcelain streak plate. Mineral Chenite is usually found showing biaxial negative figure with birefringence of 0.0560 when evaluated closely uder polarizing microscopes for mineralogists. The dispersion display of mineral Chenite is very strong. Mineral Chenite is also found not radioactive.



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Thursday, June 30th, 2011 at 3:19 am
Category:
Optical Mineralogy
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