Magnesioferrite is a magnesium iron oxide mineral, a member of the magnetite series of spinels. Magnesioferrite crystallizes as black metallic octahedral crystals. It is named after its chemical composition of magnesium and ferric iron. The density is 4.6 - 4.7 (average = 4.65), and the diaphaniety is opaque. Occurs as well-formed fine sized crystals or massive and granular. Its hardness is 6-6.5. It has a metallic luster and a dark red streak.
magnesioferrite, magnesium, iron, oxide, mineral, member, magnetite, series, spinels, crystallizes, black, metallic, octahedral, crystals, named, after, chemical, composition, magnesium, ferric, iron, density, average, diaphaniety, opaque, occurs, well, formed. Magnesioferrite is a magnesium iron oxide mineral a member of the magnetite series of spinels Magnesioferrite crystallizes as black metallic octahedral crystals It is named after its chemical composition of magnesium and ferric iron The density is 4 6 4 7 average 4 65 and the diaphaniety is opaque Occurs as well formed fine sized crystals or massive and granular Its hardness is 6 6 5 It has a metallic luster and a dark red streak MagnesioferriteMagnesioferrite from Ochtendung Eifel GermanyGeneralCategoryOxide minerals Spinel group Spinel structural groupFormula repeating unit Mg Fe3 2O4IMA symbolMfr 1 Strunz classification4 BB 05Crystal systemCubicCrystal classHexoctahedral m3 m H M symbol 4 m 3 2 m Space groupFd3 mUnit cella 8 3866 A Z 8IdentificationColorBlack to brownish blackCrystal habitAs octahedral crystals massive granularTwinningTwin plane 111 contact twinsCleavageOn 111 FractureUnevenTenacityBrittleMohs scale hardness6 6 5LusterMetallic semimetallic dullStreakDark redDiaphaneityOpaque transparent in thin fragmentsSpecific gravity4 55 4 65 measuredOptical propertiesIsotropicRefractive indexn 2 38Other characteristicsMagneticReferences 2 3 4 Occurrence editIt occurs in fumaroles as a result of combustion metamorphism and coal seam fires in glass spherules related to meteorite impacts and as accessory phase in kimberlites and carbonatites 2 It has been reported from Vesuvius and Stromboli Italy 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 Handbook of Mineralogy Magnesioferrite on Mindat org Magnesioferrite on Webmineral nbsp Wikimedia Commons has media related to Magnesioferrite This article about a specific oxide mineral is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Magnesioferrite amp oldid 1140679614, wikipedia, wiki, book, books, library,
