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Click Here For Best Selection Of High Quality Polarizing Microscope

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The chemical formula of mineral Valentinite is indicated by Sb2O3 or Antimony Oxide. This Valenitinte actually belongs to the Oxides and Hydroxides mineral class. Valentinite is considered as a minor ore of antimony and it is also most commonly used as mineral specimen. When it is evaluated under petrographic polarizing microscope, Valentinite is most often found exhibiting nice and interesting microscope appearance. Valentinite is a high lustered and often found fibrous oxide mineral that commonly exhibits very interesting microscope image under polarized microscopes for mineralogists. Valentinite is most commonly found forming sprays of crystals that are usually matted to the host rock in radiating clusters that could appear more splendidly wonderful when viewed under polarizing microscopes. When viewed in reflected light of polarizing microscopes, it is most commonly found showing adamantine or gem-like to pearly luster and this serves to add a nice quality to this uncommon antimony mineral.

 

            Mineral Valentinite is known to be dimorphous with senarmontite. In optical mineralogy, dimorphous means both minerals have the exact same chemistry but they have different structures. Senarmontite is known to be isometric while Valentinite is orthorhombic. Valentinite is associated with senarmontite as well as stilbite. The association is actually of no surprise since both minerals are oxidation products of the antimony sulfide.

             Mineral Valentinite is most commonly found colorless, white, yellow, reddish or gray that could appear more fascinating when viewed under polarizing microscopes for mineralogists. Valentinite is also usually found showing adamantine or pearly luster when viewed under petrographic polarizing microscopes used in optical mineralogy. Most crystals of mineral Valentinite are found translucent to opaque in more massive specimens. Mineral Valentinite is known to crystallize in the orthorhombic system of crystal formation. In optical mineralogy, this orthorhombic crystal system comprises crystals having three mutually perpendicular axes, of which all are of different lengths. The crystal habit of mineral Valentinite as described in the field of optical mineralogy usually includes prismatic to fibrous and compact aggregates forming tufts and radiating sprays, all of which can be more splendidly exhibited when viewed under petrographic polarizing microscope used in the field of optical mineralogy. Valentinite can be also found massive and granular in form. Individual crystals are complexly faceted. Valentinite is most commonly found showing perfect cleavage when viewed under polarized microscope for mineralogists. It also shows uneven fracture when viewed closely under polarizing microscopes. The hardness measure of the mineral when it is evaluated using the Mohs scale method is usually 2.5 to 3. Valentinite is most commonly found leaving a white streak when specimen is rubbed on a white porcelain streak plate. The specific gravity measure of the mineral is approximately 5.7 grams per cubic centimeters, which is heavier than average. Valentinite is most commonly found associated with other interesting minerals including quartz, native antimony, stibnite, kermesite, senarmontite, stibiconite and other antimony minerals. The best field indicators of mineral Valentinite usually include high luster, specific gravity, crystal habit and association. Valentinite notably occurs at several localities including Algeria, Germany, France, Bolivia, Czech Republic and Canada.



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Monday, June 29th, 2009 at 2:22 pm
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The Oxides and Hydroxides Mineral Class
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