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Cochromite

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Formula:
(Co,Ni,Fe)(Cr,Al)2O4
Hardness:
7
Name:
For cobalt and chromium in the composition.
This page provides mineralogical data about Cochromite.


Hide all sections | Show all sections

Classification of CochromiteHide

Approved
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
7.2.3.5

7 : MULTIPLE OXIDES
2 : AB2X4
7.21.3

7 : Oxides and Hydroxides
21 : Oxides of Co

Physical Properties of CochromiteHide

Hardness:

Chemical Properties of CochromiteHide

Formula:
(Co,Ni,Fe)(Cr,Al)2O4
IMA Formula:
CoCr2O4

Type Occurrence of CochromiteHide

Synonyms of CochromiteHide

Other Language Names for CochromiteHide

Relationship of Cochromite to other SpeciesHide

Other Members of this group:
ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
CoulsoniteFe2+V3+2O4
CuprospinelCu2+Fe3+2O4Iso.
DellagiustaiteV2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
FrankliniteZn2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
GahniteZnAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
GalaxiteMn2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
HercyniteFe2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
JacobsiteMn2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
MagnesiochromiteMgCr2O4Iso. m3m (4/m 3 2/m) : Fd3m
MagnesiocoulsoniteMgV2O4Iso.
MagnesioferriteMgFe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
MagnetiteFe2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
ManganochromiteMn2+Cr2O4
SpinelMgAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
ThermaerogeniteCuAl2O4Iso.
TrevoriteNi2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
VuorelaineniteMn2+V3+2O4
ZincochromiteZnCr2O4Iso.

Related Minerals - Nickel-Strunz GroupingHide

4.BB.ChenmingiteFeCr2O4Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.ThermaerogeniteCuAl2O4Iso.
4.BB.05ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05CoulsoniteFe2+V3+2O4
4.BB.05CuprospinelCu2+Fe3+2O4Iso.
4.BB.05Filipstadite(Sb0.5Fe0.5)Mn2O4Iso.
4.BB.05FrankliniteZn2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05GahniteZnAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05GalaxiteMn2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05HercyniteFe2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05JacobsiteMn2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05ManganochromiteMn2+Cr2O4
4.BB.05MagnesiocoulsoniteMgV2O4Iso.
4.BB.05MagnesiochromiteMgCr2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05MagnesioferriteMgFe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05MagnetiteFe2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05Qandilite(Mg,Fe3+)2(Ti,Fe3+,Al)O4
4.BB.05SpinelMgAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05TrevoriteNi2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05UlvöspinelTiFe2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05VuorelaineniteMn2+V3+2O4
4.BB.05ZincochromiteZnCr2O4Iso.
4.BB.10HausmanniteMn2+Mn3+2O4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.BB.10HetaeroliteZnMn2O4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.BB.10HydrohetaeroliteZnMn2O4 · H2OTet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.BB.10IwakiiteMn2+Fe3+2O4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.BB.15MaghemiteFe3+2O3Iso. 4 3 2 : P41 3 2
4.BB.15TitanomaghemiteFe3+(Fe3+,Ti4+,Fe2+,◻)2O4Iso. 4 3 2 : P43 3 2
4.BB.20Tegengrenite(Mg,Mn2+)2Sb5+0.5(Mn3+,Si,Ti)0.5O4Trig.
4.BB.25XieiteFe2+Cr2O4Orth. mmm (2/m 2/m 2/m)

Related Minerals - Dana Grouping (8th Ed.)Hide

7.2.3.1MagnesiochromiteMgCr2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.2.3.2ManganochromiteMn2+Cr2O4
7.2.3.3ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.2.3.4Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.2.3.6ZincochromiteZnCr2O4Iso.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.21.1HeterogeniteCo3+O(OH)Hex.
7.21.4Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2OHex.

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.

References for CochromiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bulletin du BRGM (deuxième série), Section II (1978): 225-230.

Internet Links for CochromiteHide

Localities for CochromiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia
 
  • Far-Eastern Region
    • Kamchatka Oblast'
Bortnikova, S. B., Bessonova, E. P., Gavrilenko, G. M., Vernikovskaya, I. V., Bortnikova, S. P., & Palchik, N. A. (2008). HYDROGEOCHEMISTRY OF THERMAL SOURCES, MUTNOVSKY VOLCANO, SOUTH KAMCHATKA (RUSSIA). In Proceedings of the 33rd workshop on geothermal reservoir engineering, Stanford University, Stanford, SGP-TR-185.
South Africa (TL)
 
  • Mpumalanga Province
    • Ehlanzeni District
      • Barberton
        • Bon Accord
Am Min 65 (1980), 811; O'Driscoll, B., Clay, P. L., Cawthorn, R. G., Lenaz, D., Adetunji, J., & Kronz, A. (2014). Trevorite: Ni-rich spinel formed by metasomatism and desulfurization processes at Bon Accord, South Africa?. Mineralogical Magazine, 78(1), 145-163.
Thailand
 
  • Kanchanaburi Province
    • Bo Phloi District
Handbook of Mineralogy: http://www.handbookofmineralogy.com/pdfs/cochromite.pdf
Mineral and/or Locality  
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