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Zincochromite

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

Classification of Zincochromite

Approved 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
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Type Occurrence of Zincochromite

Year of Discovery:
1986

Physical Properties of Zincochromite

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

Crystallography of Zincochromite

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

Optical Data of Zincochromite

Type:
Isotropic

Chemical Properties of Zincochromite

Formula:
ZnCr2O4
Essential elements:
All elements listed in formula:

Relationship of Zincochromite to other Species

Member of:
Other Members of Group:
Ceylonite
ChromiteFe2+Cr23+O4
Cochromite(Co,Ni,Fe)(Cr,Al)2O4
CoulsoniteFe2+V23+O4
CuprospinelCu2+Fe23+O4
Filipstadite(Sb0.5Fe0.5)Mn2O4
FrankliniteZn2+Fe23+O4
GahniteZnAl2O4
Galaxite(Mn,Fe,Mg)(Al,Fe)2O4
HercyniteFe2+Al2O4
JacobsiteMn2+Fe23+O4
MagnesiochromiteMg(Cr,Al,Fe)2O4
MagnesiocoulsoniteMgV2O4
MagnesioferriteMgFe23+O4
MagnetiteFe2+Fe23+O4
Manganochromite(Mn,Fe)(Cr,V)2O4
Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4
Qandilite(Mg,Fe)2(Ti,Fe,Al)O4
SpinelMgAl2O4
TrevoriteNi2+Fe23+O4
UlvöspinelFe2TiO4
Vuorelainenite(Mn,Fe)(V,Cr)2O4
4.BB.05ChromiteFe2+Cr23+O4
4.BB.05Cochromite(Co,Ni,Fe)(Cr,Al)2O4
4.BB.05CoulsoniteFe2+V23+O4
4.BB.05CuprospinelCu2+Fe23+O4
4.BB.05Filipstadite(Sb0.5Fe0.5)Mn2O4
4.BB.05FrankliniteZn2+Fe23+O4
4.BB.05GahniteZnAl2O4
4.BB.05Galaxite(Mn,Fe,Mg)(Al,Fe)2O4
4.BB.05HercyniteFe2+Al2O4
4.BB.05JacobsiteMn2+Fe23+O4
4.BB.05Manganochromite(Mn,Fe)(Cr,V)2O4
4.BB.05MagnesiocoulsoniteMgV2O4
4.BB.05MagnesiochromiteMg(Cr,Al,Fe)2O4
4.BB.05MagnesioferriteMgFe23+O4
4.BB.05MagnetiteFe2+Fe23+O4
4.BB.05Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4
4.BB.05Qandilite(Mg,Fe)2(Ti,Fe,Al)O4
4.BB.05SpinelMgAl2O4
4.BB.05TrevoriteNi2+Fe23+O4
4.BB.05UlvöspinelFe2TiO4
4.BB.05Vuorelainenite(Mn,Fe)(V,Cr)2O4
4.BB.10HausmanniteMn2+Mn23+O4
4.BB.10HetaeroliteZnMn2O4
4.BB.10HydrohetaeroliteZnMn2O4 · H2O
4.BB.10IwakiiteMn2+Fe23+O4
4.BB.15MaghemiteFe23+O3
4.BB.15TitanomaghemiteFe3+(Fe3+,Ti4+,Fe2+,◻)2O4
4.BB.20Tegengrenite(Mg,Mn2+)2Sb5+0.5(Mn3+,Si,Ti)0.5O4
4.BB.25XieiteFe2+Cr2O4
7.14.1EskolaiteCr2O3
7.14.2BracewelliteCrO(OH)
7.14.3GrimaldiiteCrO(OH)
7.14.4GuyanaiteCrO(OH)
7.14.5YimengiteK(Cr,Ti,Fe,Mg)12O19
7.14.6Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38
7.14.7McconnelliteCuCrO2
7.14.8RedledgeiteBa(Ti64+Cr23+)O16
7.14.9HawthorneiteBa(MgTi3Cr4Fe4)O19
7.14.11Wattersite(Hg2+)2Hg2+(CrO4)O2
7.14.12ChromiteFe2+Cr23+O4
7.14.13MagnesiochromiteMg(Cr,Al,Fe)2O4

Other Names for Zincochromite

Name in Other Languages:

Other Information

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 Zincochromite

Reference List:
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1987): 116: 367-371.

American Mineralogist (1988): 73: 931-932.

Internet Links for Zincochromite

Localities for Zincochromite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • New South Wales
    • Young Co.
www.minerals.nsw.gov.au/minfo/62_elinforc.html.
Ghana
 
  • Western Region
    • Ashanti gold belt
      • Tarkwa
The Canadian Mineralogist Vol. 35,p p.587-595(1997)
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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