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The chemical formula of mineral Safflorite is indicated by the formula (Co, Fe)As2 or Cobalt Iron Arsenide. This Safflorite is actually a Sulfide mineral. It is considered as a very minor ore of cobalt and arsenic and it is also most commonly used as mineral specimen. When evaluated with the aid of petrographic polarizing light microscope, mineral Safflorite is most commonly found showing nice and interesting microscope appearance. Safflorite is actually a rare mineral. However, it is usually found with other arsenides and thus it is included with them when mined for cobalt and/or arsenic. Safflorite is usually associated with the pink to red cobalt arsenate mineral erythrite when weathered. Mineral Safflorite is a near dimorph with the mineral clinosafflorite. In the field of optical mineralogy, a dimorph is a set of two minerals that share the same chemistry but have different structures. Clinosafflorite is not quite an exact dimorph with the addition of the nickel, but Safflorite often contains traces of nickel, just not as much. Clinosafflorite gets its name by virtue of its monoclinic symmetry compared to the orthorhombic symmetry of Safflorite. Twinning is common in Safflorite and forms star shaped trillings. Cobalt minerals are sometimes interesting to collect and Safflorite is regarded as certainly interesting.

             Safflorite is most commonly found tin white color when viewed with the aid of polarizing microscopes for mineralogists and it usually darkens upon exposure to air. Safflorite is most commonly found exhibiting metallic luster when viewed in reflected light of petrographic polarizing microscope used in optical mineralogy. Most crystals of mineral Safflorite are found opaque in appearance. Safflorite 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 Safflorite as described in the field of optical mineralogy usually includes tiny tabular to prismatic crystals and fibrous masses, which is sometimes radially fibrous and more splendidly exhibited when viewed under petrographic polarizing microscopes for mineralogists. Safflorite is also found compact and massive in form. Twins are seen as star shaped trillings. Mineral Safflorite is usually found showing indistinct cleavage when viewed under polarizing microscopes used in optical mineralogy. Safflorite is also found exhibiting conchoidal fracture when viewed under polarized microscope for mineralogists. The hardness measure of mineral Safflorite when it is evaluated using the Mohs scale method is approximately 6.9 to 7.4, which is considered well above average for metallic minerals. Mineral Safflorite is most commonly found leaving black streak when rubbed on a white porcelain streak plate. Safflorite is most commonly associated with arsenic, cobaltite, skutterudite, arsenopyrite, calcite and erythrite. The best field indicators of mineral Safflorite usually include dark tarnish color, crystal habit, hardness, associations, streak and density. Safflorite notably occurs at several localities including Germany, Canada, Czech Republic and the type of locality of Nordmark, Varmland, Sweden as well as some areas in USA. 



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Thursday, July 30th, 2009 at 8:38 am
Category:
The Sulfides Mineral Class
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