magnesioferrite
Sign in to saveMagnesioferrite 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.
Key facts
- Mineral.name
- Magnesioferrite
- Mineral.image
- Magnesioferrite - Ochtendung, Eifel, Germany.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Magnesioferrite from Ochtendung, Eifel, Germany
- Mineral.category
- Oxide minerals Spinel group Spinel structural group
- Mineral.formula
- Mg(Fe3+)2O4
- Mineral.IMAsymbol
- Mfr
- Mineral.strunz
- 4.BB.05
- Mineral.system
- Cubic
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Fdm
- Mineral.unit cell
- a = 8.3866 Å; Z = 8
- Mineral.color
- Black to brownish black
- Mineral.habit
- As octahedral crystals, massive granular
- Mineral.twinning
- Twin plane , contact twins
- Mineral.cleavage
- On
- Mineral.fracture
- Uneven
- Mineral.tenacity
- Brittle
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Wikidata facts
- Image
- Magnesioferrite - Ochtendung, Eifel, Germany.jpg
Show 6 more facts
- Commons category
- Magnesioferrite
- chemical formula
- MgFe³⁺₂O₄
- Nickel-Strunz 9th edition (updated 2009)
- 4.BB.05
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.BB.05
- IMA Mineral Symbol
- Mfr
- Strunz 8th edition (series ID, updated)
- IV/B.01b
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Article
2 sectionsContents
- Occurrence
- References
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.
==Occurrence== It 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.
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