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The chemical formula of mineral Blatonite is indicated by    UO2CO3•(H2O). It can be found forming in seams of gypsum along bedding planes of a siltstone within the basal conglomerate member of the Shinarump Formation. It was found by Patrick Haynes in the Jomac uranium mine, Brown’s Rim, San Juan County, Utah, U.S.A. Blatonite was named for Dr. Norbert Blaton (1945-), crystallographer at the University of Leuven, Belgium, a specialist on the crystal structure of uranium minerals. This mineral is known to crystallize in the hexagonal system of crystal formation. In optical mineralogy, the hexagonal system of crystallization comprises crystals having four axes. Three of which are positioned in a single plane with equal length and are symmetrically spaced. The fourth axis is found to be perpendicular to the other three axes.

 

            Blatonite is commonly found with parting which can be found more clearly visible under polarized microscope used in the field of optical mineralogy. Blatonite is usually found colored canary yellow in hand sample. The specific gravity measure of mineral Blatonite is commonly found  ranging from 3.99 to 4.05 grams per cubic centimeters. Most crystals of mineral Blatonite are found translucent in appearance. Blatonite is usually found showing flexible fracture with flexible fragments. The crystal habit of mineral Blatonite as described in the field of optical mineralogy usually includes acicular form which occurs as needle-like crystals. It can be also found forming aggregates made of numerous individual crystals or clusters. It can be also found radial with crystals radiating from a center without producing stellar forms. The hardness measure of mineral Blatonite when evaluated using the Mohs scale method is usually found ranging from 2 to 3. It is also commonly showing silky luster when viewed in reflected light of polarized microscopes for mineralogist. It is also commonly found leaving white streak when rubbed on a white porcelain streak plate. Blatonite is also found showing uniaxial positive measure when viewed closely between crossed nicols of polarizing microscopes. It is also commonly found showing 0.0240 birefringence. Blatonite is found to be radioactive after chemical evaluations.



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Saturday, January 15th, 2011 at 3:30 am
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Optical Mineralogy
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