Safflorite is a rare cobaltironarsenide mineral with the chemical formula (Co,Fe)As2. Pure safflorite is CoAs2, but iron is virtually always present. Safflorite is a member of the three-way substitution series of arsenides known as the loellingite group. More than fifty percent iron makes the mineral loellingite whereas more than fifty percent nickel and the mineral is rammelsbergite. A parallel series of antimonide minerals exist.
Safflorite along with the other minerals crystallize in the orthorhombic system forming opaque gray to white massive to radiating forms, Clinosafflorite has a monoclinic symmetry. It has a mohs hardness of 4.5 and a specific gravity of 6.9 to 7.3. Twinning is common and star shaped twins are frequently found.
Polished sample of safflorite, loellingite and rammelsbergite on quartz from the St Andreasberg District, Harz Mountains
It was first described in 1835 from the Schneeberg District, Ore Mountains, Germany. Safflorite occurs with other arsenide minerals as an accessory in silver mining districts. It alters to the arsenate erythrite in the secondary environment.
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Schumann, Walter (1991). Mineralien aus aller Welt. BLV Bestimmungsbuch (2 ed.). p. 223. ISBN3-405-14003-X.
February 15, 2024
safflorite, rare, cobalt, iron, arsenide, mineral, with, chemical, formula, pure, safflorite, coas2, iron, virtually, always, present, member, three, substitution, series, arsenides, known, loellingite, group, more, than, fifty, percent, iron, makes, mineral, . Safflorite is a rare cobalt iron arsenide mineral with the chemical formula Co Fe As2 Pure safflorite is CoAs2 but iron is virtually always present Safflorite is a member of the three way substitution series of arsenides known as the loellingite group More than fifty percent iron makes the mineral loellingite whereas more than fifty percent nickel and the mineral is rammelsbergite A parallel series of antimonide minerals exist SaffloriteSafflorite and calcite from MoroccoGeneralCategoryArsenide mineralFormula repeating unit Co Fe As2IMA symbolSaf 1 Strunz classification2 EB 15aCrystal systemOrthorhombicCrystal classDipyramidal mmm H M symbol 2 m 2 m 2 m Space groupPnnmUnit cella 5 173 A b 5 954 A c 2 999 A Z 2IdentificationColorTin white tarnishes to grayCrystal habitPrismatic crystals massive to fibrousTwinningForms cruciform penetration twinsCleavageDistinct on 100 FractureUneven to conchoidalTenacityBrittleMohs scale hardness4 5 5 5LusterMetallicStreakGrayish blackDiaphaneityOpaqueSpecific gravity6 9 7 3References 2 3 4 Safflorite along with the other minerals crystallize in the orthorhombic system forming opaque gray to white massive to radiating forms Clinosafflorite has a monoclinic symmetry It has a mohs hardness of 4 5 and a specific gravity of 6 9 to 7 3 Twinning is common and star shaped twins are frequently found Polished sample of safflorite loellingite and rammelsbergite on quartz from the St Andreasberg District Harz MountainsIt was first described in 1835 from the Schneeberg District Ore Mountains Germany Safflorite occurs with other arsenide minerals as an accessory in silver mining districts It alters to the arsenate erythrite in the secondary environment Wikimedia Commons has media related to Safflorite 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 Handbook of Mineralogy Safflorite on Mindat org Safflorite on Webmineral Minerals net Mineral galleries Schumann Walter 1991 Mineralien aus aller Welt BLV Bestimmungsbuch 2 ed p 223 ISBN 3 405 14003 X Retrieved from https en wikipedia org w index php title Safflorite amp oldid 1196876205, wikipedia, wiki, book, books, library,
