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The chemical formula of mineral Artroeite is indicated by PbAlF3(OH)2. Mineral Artroeite is usually found in a quartz-lined vug. Mineral Artroeite is also commonly found at its type of locality at the Grand Reef mine, near Klondyke, Graham County, Arizona, USA. This mineral was named for Dr. Arthur (Art) Roe (1912-1993). Mineral Artroeite 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 Artroeite is commonly found showing perfect cleavage in one direction and good in the other which can be found more clearly exhibited when viewed closely under polarizin light microscope. Mineral Artroeite is commonly found colorless in hand sample. The specific gravity measure of mineral Artroeite is usually found ranging from 5.36 to 5.42 grams per cubic centimeters, giving an average of 5.39. Most crystals of mineral Artroeite are found transparent in appearance. Mineral Artroeite is also most commonly found showing brittle fracture that is generally displayed by glasses and most non-metallic minerals. The crystal habit of mineral Artroeite as described in the field of petrographic polarizing microscope used in the field of optical mineralogy usually includes bladed aggregates of thin lath-like crystals like kyanite. The hardness measure of mineral Artroeite when it is evaluated using the Mohs scale method is usually found 2.5. Artroeite is also commonly found showing vitreous or glassy luster when viewed in reflected light of polarizing microscope. Mineral Artroeite is also commonly found leaving white streak when rubbed on white porcelain streak plate. Mineral Artroeite is most commonly found showing biaxial negative figure when evaluated between crossed nicols of polarizing microscope used in the field of optical mineralogy. Artroeite is also commonly found showing 0.0620 birefringence. Artroeite is a non-radioactive mineral as evaluated.



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Sunday, October 24th, 2010 at 3:27 am
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Optical Mineralogy
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