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The chemical formula of mineral Uranophane is indicated by Ca(UO2)2Si2O7 – 6H2O or Hydrated Calcium Uranyl Silicate. Uranophane is actually a Silicate mineral. It is considered as a minor ore of uranium. Uranophane is also used as mineral specimen and it is often found exhibiting nice and interesting microscope images when viewed under polarized light microscope used in optical mineralogy. Uranophane is also known as uranotile. It is also regarded as a rare mineral that forms from the oxidation of uranium-bearing minerals. Uranophane is actually closely related to two other uranium bearing minerals cuprosklodowskite and Sklodowskite. However, Uranophane is rather more common compared to the two of them. The above mentioned minerals form similar acicular or hairlike crystals that form radial aggregates and tufts that appears more fascinating and more splendidly wonderful when viewed with the aid of petrographic polarizing microscopes used in the field of optical mineralogy. The color of mineral Uranophane is bright butter yellow while cuprosklodowskite is dark green and Sklodowskite is usually found bronze to golden yellow, all of which are very splendid when viewed under polarized microscopes for mineralogists. Mineral Uranophane usually forms interesting specimens and fine specimens that are sought after by many collectors of rare uranium minerals. It is however very important to note that Uranophane is also radioactive and it should be stored away from other minerals that are easily affected by radioactivity. Human exposure should be also limited.

             Mineral Uranophane is usually found butter yellow to bright lemon yellow and also amber to brown that can be found more beautiful when viewed under polarizing microscope used in optical mineralogy. Uranophane is also found showing vitreous to silky luster when viewed in reflected light of petrographic polarizing microscopes for mineralogists. Most crystals of mineral Uranophane are found transparent to translucent in appearance. Uranophane is known to crystallize in the monoclinic system of crystal formation. In optical mineralogy, the monoclinic system of crystal formation comprises crystals having three axes of unequal lengths. Two of which are usually found in a position that is oblique or not perpendicular to one another. However, both of which are commonly found perpendicular to the third axis.             The crystal habit of mineral Uranophane as described in optical mineralogy typically include fibrous or acicular tufts, radial aggregates and crusts that appear more fascinating when viewed with the aid of polarizing microscopes for mineralogists. Mineral Uranophane is usually found showing perfect cleavage in only one direction which can be found more clearly visible when viewed with the aid of polarizing microscopes used in optical mineralogy. The hardness measure of mineral Uranophane when it is evaluated using the Mohs scale method is actually ranging from 2 to 3. Mineral Uranophane is most commonly found associated with other interesting minerals including Uraninite, Sklodowskite, autunite, zeunerite, torbernite and other uranium ore oxidation minerals. The specific gravity measure of Uranophane is approximately 3.8+ grams per cubic centimeters which is above average for translucent minerals. Mineral Uranophane is somewhat fluorescent and is known to be radioactive.  The best filed indicators of mineral Uranophane usually include color, associations, crystal habit, fluorescence, and radioactivity. Uranophane notably occurs at several localities including Zaire, Germany, and some areas in USA including Georgia and Hanosh Mine in New Mexico.



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Wednesday, September 30th, 2009 at 3:40 am
Category:
The Silicates Mineral Class
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