4.BB.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations

Dana 8th ed.:

7.2.3.4

7 : MULTIPLE OXIDES
2 : AB₂X₄

Hey's CIM Ref.:

7.22.7

7 : Oxides and Hydroxides
22 : Oxides of Ni

Physical Properties of NichromiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Dark green, black

Streak:

Greyish green

Hardness:

6 - 6½ on Mohs scale

Fracture:

Conchoidal

Density:

5.10 g/cm³ (Calculated)

Optical Data of NichromiteHide

Type:

Isotropic

Chemical Properties of NichromiteHide

Formula:

(Ni,Co,Fe)(Cr,Fe,Al)₂O₄

Elements listed:

Al, Co, Cr, Fe, Ni, O - search for minerals with similar chemistry

Crystallography of NichromiteHide

Crystal System:

Isometric

Class (H-M):

m3m (4/m 3 2/m) - Hexoctahedral

Space Group:

Fd3m

Cell Parameters:

a = 8.31 Å

Unit Cell V:

573.86 Å³ (Calculated from Unit Cell)

Other Language Names for NichromiteHide

German:Nichromit

Russian:Нихромит

Spanish:Nichromita

Relationship of Nichromite to other SpeciesHide

Member of:

Spinel Subgroup > Oxyspinel Group > Spinel Supergroup

Other Members of this group:

Chromite	Fe²⁺Cr³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Cochromite	CoCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Coulsonite	Fe²⁺V³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Cuprospinel	Cu²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m)
Dellagiustaite	V²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Deltalumite	(Al_0.67◻_0.33)Al₂O₄	Tet. 4 2m : P4m2
Franklinite	Zn²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Gahnite	ZnAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Galaxite	Mn²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Guite	Co²⁺Co³⁺₂O₄	Iso.
Hausmannite	Mn²⁺Mn³⁺₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
Hercynite	Fe²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Hetaerolite	ZnMn₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
Jacobsite	Mn²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Jacobsite-Q	Mn²⁺(Fe³⁺,Mn³⁺)₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
Maghemite	(Fe³⁺_0.67◻_0.33)Fe³⁺₂O₄	Iso. 4 3 2 : P4₁ 3 2
Magnesiochromite	MgCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Magnesiocoulsonite	MgV₂O₄	Iso. m3m (4/m 3 2/m)
Magnesioferrite	MgFe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Magnetite	Fe²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Manganochromite	Mn²⁺Cr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Spinel	MgAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Thermaerogenite	CuAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Titanomaghemite	(Ti⁴⁺_0.5◻_0.5)Fe³⁺₂O₄	Iso. 4 3 2 : P4₃ 3 2
Trevorite	Ni²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
UM1994-06-O:AlCo	CoAl₂O₄
Vuorelainenite	Mn²⁺V³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
Zincochromite	ZnCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m

Related Minerals - Strunz-mindat Grouping Hide

4.BB.	Elgoresyite	(Mg₅Si₂)O₉	Mon. 2/m : B2/m
4.BB.	Chenmingite	FeCr₂O₄	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.	Dellagiustaite	V²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.	Thermaerogenite	CuAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.	Chukochenite	LiAl₅O₈	Orth. mmm (2/m 2/m 2/m) : Imma
4.BB.	Garpenbergite	Mn₆◻AsSbO₁₀(OH)₂	Orth. mmm (2/m 2/m 2/m)
4.BB.	Magnéliite	Ti³⁺₂Ti⁴⁺₂O₇	Tric. 1 : P1
4.BB.05	Chromite	Fe²⁺Cr³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Cochromite	CoCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Coulsonite	Fe²⁺V³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Cuprospinel	Cu²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m)
4.BB.05	Filipstadite	(Fe³⁺_0.5Sb⁵⁺_0.5)Mn₂O₄	Iso.
4.BB.05	Franklinite	Zn²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Gahnite	ZnAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Galaxite	Mn²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Hercynite	Fe²⁺Al₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Jacobsite	Mn²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Manganochromite	Mn²⁺Cr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Magnesiocoulsonite	MgV₂O₄	Iso. m3m (4/m 3 2/m)
4.BB.05	Magnesiochromite	MgCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Magnesioferrite	MgFe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Magnetite	Fe²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Qandilite	(Mg,Fe³⁺)₂(Ti,Fe³⁺,Al)O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Spinel	MgAl₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Trevorite	Ni²⁺Fe³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Ulvöspinel	TiFe₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Vuorelainenite	Mn²⁺V³⁺₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Zincochromite	ZnCr₂O₄	Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05	Harmunite	CaFe₂O₄	Orth. mmm (2/m 2/m 2/m) : Pbcm
4.BB.05	Wernerkrauseite	Ca(Fe³⁺,Mn³⁺)₂Mn⁴⁺O₆	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.05	Deltalumite	(Al_0.67◻_0.33)Al₂O₄	Tet. 4 2m : P4m2
4.BB.05	Guite	Co²⁺Co³⁺₂O₄	Iso.
4.BB.10	Hausmannite	Mn²⁺Mn³⁺₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
4.BB.10	Hetaerolite	ZnMn₂O₄	Tet. 4/mmm (4/m 2/m 2/m) : I4₁/amd
4.BB.10	Manganostibite	(Mn,Fe)₇SbAsO₁₂	Orth. mmm (2/m 2/m 2/m)
4.BB.15	Maghemite	(Fe³⁺_0.67◻_0.33)Fe³⁺₂O₄	Iso. 4 3 2 : P4₁ 3 2
4.BB.15	Titanomaghemite	(Ti⁴⁺_0.5◻_0.5)Fe³⁺₂O₄	Iso. 4 3 2 : P4₃ 3 2
4.BB.20	Tegengrenite	(Mn³⁺_0.5Sb⁵⁺_0.5)Mg₂O₄	Trig. 3 : R3
4.BB.25	Xieite	Fe²⁺Cr₂O₄	Orth. mmm (2/m 2/m 2/m)
4.BB.30	Carmeltazite	ZrAl₂Ti₄O₁₁	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.35	Feiite	Fe²⁺₂(Fe²⁺Ti⁴⁺)O₅	Orth. mmm (2/m 2/m 2/m) : Cmcm
4.BB.40	Maohokite	MgFe₂O₄	Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.45	Tschaunerite	(Fe²⁺)(Fe²⁺Ti⁴⁺)O₄	Orth. mmm (2/m 2/m 2/m) : Cmcm

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for NichromiteHide

mindat.org URL:

https://www.mindat.org/min-2894.html
Please feel free to link to this page.

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References for NichromiteHide

Reference List:

Bulletin du BRM, deuxième série, Section II (1978): 225-230.

American Mineralogist (1980): 65: 811.

Localities for NichromiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the

symbol to view information about a locality. The

symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

South Africa

Mpumalanga

Ehlanzeni District Municipality

Mbombela Local Municipality

Barberton

ⓘ Bon Accord Ni deposit

Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, PO Box 44283, Linden 2104, South Africa.

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Nichromite

Unique IdentifiersHide

Classification of NichromiteHide