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
via Wikipedia infobox
Wikidata facts
- Subclass of
- oxyspinel group
- Named after
- iron(III)
- Image
- Magnesioferrite - Ochtendung, Eifel, Germany.jpg
Show 9 more facts
- crystal system
- cubic crystal system
- streak color
- garnet
- 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
- type locality (geology)
- Mount Vesuvius
- IMA Mineral Symbol
- Mfr
- Strunz 8th edition (series ID, updated)
- IV/B.01b
Sources (1)
via Wikidata · CC0
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Encyclopedic overview
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.
Excerpted from Wikipedia’s “magnesioferrite” article, available under the CC BY-SA 4.0 licence.
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