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Zincochromite

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Formula:
ZnCr2O4
Colour:
Brown, brownish-grey in reflected light
Lustre:
Sub-Metallic
Hardness:
5½ - 6
Crystal System:
Isometric
Member of:
Name:
Named as the zinc analogue of Chromite.
Spinel Group. The zinc analogue of Chromite.


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Classification of ZincochromiteHide

Approved
Approval Year:
1986
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
7.2.3.6

7 : MULTIPLE OXIDES
2 : AB2X4
7.14.10

7 : Oxides and Hydroxides
14 : Oxides of Cr

Physical Properties of ZincochromiteHide

Sub-Metallic
Colour:
Brown, brownish-grey in reflected light
Hardness:
5½ - 6 on Mohs scale

Optical Data of ZincochromiteHide

Type:
Isotropic

Chemical Properties of ZincochromiteHide

Formula:
ZnCr2O4

Crystallography of ZincochromiteHide

Crystal System:
Isometric
Cell Parameters:
a = 8.32 Å
Unit Cell V:
575.93 ų (Calculated from Unit Cell)

Type Occurrence of ZincochromiteHide

Synonyms of ZincochromiteHide

Other Language Names for ZincochromiteHide

Relationship of Zincochromite to other SpeciesHide

Member of:
Other Members of this group:
ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
Cochromite(Co,Ni,Fe)(Cr,Al)2O4
CoulsoniteFe2+V3+2O4
CuprospinelCu2+Fe3+2O4Iso.
Filipstadite(Sb0.5Fe0.5)Mn2O4Iso.
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
Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4Iso. m3m (4/m 3 2/m) : Fd3m
Qandilite(Mg,Fe3+)2(Ti,Fe3+,Al)O4
SpinelMgAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
TrevoriteNi2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
UlvöspinelFe2TiO4Iso.
VuorelaineniteMn2+V3+2O4
XieiteFe2+Cr2O4Orth. mmm (2/m 2/m 2/m)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Clausthalite1 photo of Zincochromite associated with Clausthalite on mindat.org.
Roscoelite1 photo of Zincochromite associated with Roscoelite on mindat.org.
Chromceladonite1 photo of Zincochromite associated with Chromceladonite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.BB.05ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05Cochromite(Co,Ni,Fe)(Cr,Al)2O4
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.05UlvöspinelFe2TiO4Iso.
4.BB.05VuorelaineniteMn2+V3+2O4
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
7.2.3.5Cochromite(Co,Ni,Fe)(Cr,Al)2O4

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.14.1EskolaiteCr2O3Trig.
7.14.2BracewelliteCrO(OH)Orth. mmm (2/m 2/m 2/m)
7.14.3GrimaldiiteCrO(OH)Trig.
7.14.4GuyanaiteCrO(OH)Orth.
7.14.5YimengiteK(Cr,Ti,Fe,Mg)12O19Hex.
7.14.6Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38Trig.
7.14.7McconnelliteCuCrO2Trig.
7.14.8RedledgeiteBa(Ti4+6Cr3+2)O16Tet.
7.14.9HawthorneiteBaMgTi3Cr4Fe2+2Fe3+2O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.14.11Wattersite(Hg+2)2Hg2+(CrO4)O2Mon. 2/m : B2/b
7.14.12ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.14.13MagnesiochromiteMgCr2O4Iso. m3m (4/m 3 2/m) : Fd3m

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 ZincochromiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1987): 116: 367-371.
American Mineralogist (1988): 73: 931-932.

Internet Links for ZincochromiteHide

Localities for ZincochromiteHide

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.
Australia
 
  • New South Wales
    • Young Co.
www.minerals.nsw.gov.au/minfo/62_elinforc.html.
Finland
 
  • Northern Finland Region
    • Suomussalmi
Geological Survey of Finland (2017) Mineral deposit Report 10/20/2017
Ghana
 
  • Western Region
    • Ashanti gold belt
      • Tarkwa
The Canadian Mineralogist Vol. 35,p p.587-595(1997)
India
 
  • Odisha (Orissa)
    • Cuttack District
Mallick, B., Rautray, T. R., Nayak, P. K., Vijayan, V., Singh, P., Behera, R. C., ... & Choudhury, R. K. (2005, March). Characterisation of hot material erupted from Mahanadi riverbank using EDXRF and XRD techniques. In INDIAN JOURNAL OF PHYSICS AND PROCEEDINGS OF THE INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE-NEW SERIES- (Vol. 79, No. 3, p. 293). NOT KNOWN.
Russia
 
  • Northern Region
    • Karelia Republic
      • Lake Onega
        • Zaonezhie peninsula
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Zapiski Vses. Mineralog. Obshch., 116(3),367-371; The Canadian Mineralogist Vol. 40, pp. 1001-1020 (2002)
    • Komi Republic
      • Prepolar Ural
        • Kozhim River Basin
          • Maldynyrd range (Maldy-nyrd range)
Pavel M. Kartashov data
Venezuela
 
  • Bolívar
    • Guaniamo
      • Quebrada Grande River
Zdenek Johan and Daniel Ohnenstetter (2010) Zincochromite from the Guaniamo River diamondiferous placers, Venezuela; evidence of its metasomatic origin. The Canadian Mineralogist(April 2010), 48(2):361-374
Mineral and/or Locality  
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