cafarsite, aso3, rare, calcium, iron, arsenite, mineral, manganese, titanium, occur, with, iron, formula, granitegeneralcategoryarsenitesformula, repeating, unit, aso3, oima, symbolcaf, strunz, classification4, 05crystal, systemisometriccrystal, classdiploidal. Cafarsite Ca8 Ti Fe2 Fe3 Mn 6 7 AsO3 12 4H2 O is a rare calcium iron arsenite mineral Manganese and titanium occur with iron in the formula CafarsiteCafarsite on graniteGeneralCategoryArsenitesFormula repeating unit Ca8 Ti Fe2 Fe3 Mn 6 7 AsO3 12 4H2 OIMA symbolCaf 1 Strunz classification4 JC 05Crystal systemIsometricCrystal classDiploidal m3 H M Symbol 2 m 3 Space groupPn3Unit cella 15 984 A Z 4IdentificationFormula mass2 230 31 g molColorDark brownCrystal habitCubic octahedral crystalsFractureConchoidalMohs scale hardness5 1 2 6Lustersub metallicStreakYellow brownDiaphaneityTranslucent to opaqueSpecific gravity3 9Optical propertiesIsotropicRefractive indexn 2 2References 2 3 4 It was first described in 1966 for an occurrence in the Binn Valley Valais Switzerland Its name is from the composition calcium ferrum iron and arsenic 3 2 4 It has also been reported from Piedmont Italy and the Hemlo gold mine in the Thunder Bay District Ontario Canada 4 3 References edit Warr L N 2021 IMA CNMNC approved mineral symbols Mineralogical Magazine 85 3 291 320 Bibcode 2021MinM 85 291W doi 10 1180 mgm 2021 43 S2CID 235729616 a b Cafarsite Mineral Data from Webmineral a b c Cafarsite on Mindat org a b c Handbook of Mineralogy nbsp This article about a specific mineral or mineraloid is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Cafarsite amp oldid 1139854734, wikipedia, wiki, book, books, library,
