Pyrophanite is a manganesetitaniumoxide mineral with formula: MnTiO3. It is a member of the ilmenite group. It is a deep red to greenish black mineral which crystallizes in the trigonal system.
It was first described in 1890 from an occurrence in the Harstigen Mine, Filipstad, Värmland, Sweden.[3] Its name was derived from the Greek πΰρ, fire, and φαίνεσθαι, to appear, because of the deep red color of the mineral.[3]
pyrophanite, manganese, titanium, oxide, mineral, with, formula, mntio3, member, ilmenite, group, deep, greenish, black, mineral, which, crystallizes, trigonal, system, generalcategoryoxide, mineralformula, repeating, unit, mntio3ima, symbolpph, strunz, classi. Pyrophanite is a manganese titanium oxide mineral with formula MnTiO3 It is a member of the ilmenite group It is a deep red to greenish black mineral which crystallizes in the trigonal system PyrophaniteGeneralCategoryOxide mineralFormula repeating unit MnTiO3IMA symbolPph 1 Strunz classification4 CB 05Dana classification4 3 5 3Crystal systemTrigonalCrystal classRhombohedral 3 same H M symbol Space groupR3Unit cella 5 13948 7 A c 14 2829 4 A Z 6IdentificationColorDeep blood red to greenish blackCrystal habitRarely as rosettes of hexagonal plates typically granular scaly occurs as exsolution lamenae in franklinite and spinelCleavagePerfect on 0221 FractureConchoidalTenacityBrittleMohs scale hardness5 6LusterSubmetallicStreakOchre yellowDiaphaneitySubtranslucent to opaqueSpecific gravity4 537 measuredOptical propertiesUniaxial Refractive indexnw 2 481 ne 2 210Birefringenced 0 271Common impuritiesFe ZnReferences 2 3 4 Discovery and occurrence editIt was first described in 1890 from an occurrence in the Harstigen Mine Filipstad Varmland Sweden 3 Its name was derived from the Greek pyr fire and faines8ai to appear because of the deep red color of the mineral 3 Its main occurrence is in manganese deposits that have undergone metamorphism It also occurs in granite amphibolite and serpentinite as an uncommon accessory mineral Associated minerals include ilmenite geikielite hematite spinel gahnite chromite magnetite ganophyllite manganophyllite hendricksite garnet and calcite 2 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 Pyrophanite in the Handbook of Mineralogy a b c Pyrophanite on Mindat org Pyrophanite data on Webmineral 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 Pyrophanite amp oldid 1138894959, wikipedia, wiki, book, books, library,
