The chemical formula of mineral Sainfeldite is indicated by Ca5(AsO4)2(AsO3{OH})2 – 4H2O or Hydrated Calcium Arsenate Hydroxide. Sainfeldite is actually a Phosphate mineral. It is most commonly and only used as a mineral specimen. When viewed with the aid of petrographic polarizing light microscope, Sainfeldite is most commonly found showing nice and interesting microscope appearance when viewed with the aid of petrographic polarizing light microscopes used in the field of optical mineralogy. Sainfeldite is usually found forming nice rosette clusters of crystals with an attractive pink color that could appear more fascinating when viewed with the aid of polarizing microscope for mineralogists.
Sainfeldite is most commonly found pale pink, white or colorless that can be more splendidly exhibited when viewed with the aid of petrographic polarizing microscopes used in the field of optical mineralogy. Sainfeldite is also usually found showing vitreous luster when evaluated in reflected light of polarized microscopes for mineralogists. Sainfeldite crystals are usually found transparent to translucent in appearance. The crystal habit of mineral Sainfeldite as described in the field of optical mineralogy usually include small prismatic crystals with slanted pinacoidal faces sometimes in radiating clusters or rosettes that are usually found more splendidly exhibited when viewed with the aid of petrographic polarizing light microscopes used in the field of optical mineralogy. Sainfeldite 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.
Sainfeldite is known to show absent cleavage even when specimen sample is closely evaluated under polarizing microscope used in the field of optical mineralogy. Sainfeldite is also usually found showing uneven facture when viewed under polarized microscope for mineralogists. The hardness measure of mineral Sainfeldite when specimen is evaluated using the Mohs scale method is usually 4. Sainfeldite is most commonly found leaving a white streak when rubbed on a white porcelain streak plate. The specific gravity measure of mineral Sainfeldite is approximately 3.0 grams per cubic centimeters, which is slightly above average for translucent minerals. Sainfeldite is usually found associated with guerinite, Pharmacolite, picropahrmacolite and other secondary arsenates. The best field indicators of mineral Sainfeldite usually include color, crystal habit, locality and associations. Sainfeldite notably occurs at its type of localities in Germany and France.
