Zincochromite
A valid IMA mineral species
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About Zincochromite
Formula:
ZnCr2O4
Colour:
Brown, brownish-grey in reflected light
Lustre:
Sub-Metallic
Hardness:
5½ - 6
Specific Gravity:
5.434 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named as the zinc analogue of Chromite.
Unique Identifiers
Mindat ID:
4412
Long-form identifier:
mindat:1:1:4412:3
GUID
(UUID V4):
(UUID V4):
6c3cecf9-51a4-4035-a9e0-238c3249d957
IMA Classification of Zincochromite
Approved
Approval year:
1986
Classification of Zincochromite
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
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 : MULTIPLE OXIDES
2 : AB2X4
7.14.10
7 : Oxides and Hydroxides
14 : Oxides of Cr
7 : Oxides and Hydroxides
14 : Oxides of Cr
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Zchr | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Zincochromite
Sub-Metallic
Transparency:
Opaque
Colour:
Brown, brownish-grey in reflected light
Hardness:
5½ - 6 on Mohs scale
Hardness:
VHN100=620 - Vickers
Density:
5.434 g/cm3 (Calculated)
Optical Data of Zincochromite
Type:
Isotropic
Colour in reflected light:
brownish gray
Internal Reflections:
brown - rare
Chemistry of Zincochromite
Mindat Formula:
ZnCr2O4
Elements listed:
Crystallography of Zincochromite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 8.3271(2) Å
Unit Cell V:
577.41 ų (Calculated from Unit Cell)
Z:
8
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0003801 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003802 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003803 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003804 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003805 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003806 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003807 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003808 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003809 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003810 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0003811 | Zincochromite | Levy D, Diella V, Pavese A, Dapiaggi M, Sani A (2005) P-V equation of state, thermal expansion, and P-T stability of synthetic zincochromite (ZnCr2O4 spinel) American Mineralogist 90 1157-1162 | 2005 | 0 | 293 | ||
0007765 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007770 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007775 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007780 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007802 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007816 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007823 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007828 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007833 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0007846 | Zincochromite | O'Neill H St C, Dollase W A (1994) Crystal structures and cation distributions in simple spinels from powder XRD structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence of the cation distribution in ZnAl2O4 Physics and Chemistry of Minerals 20 541-555 | 1994 | 0 | 293 | ||
0018130 | Zincochromite | Passerini L (1930) Ricerche sugli Spinelle.- II. I composti. Cu Al2 O4, Mg Al2 O4, Mg Fe2 O4, Zn Al2 O4, Zn Cr2 O4, Zn Fe2 O4, Mn Fe2 O4 _cod_database_code 1011278 Gazzetta Chimica Italiana 60 389-399 | 1930 | 0 | 293 | ||
0012909 | Zincochromite | Raccah P M, Bouchard R J, Wold A (1966) Locality: synthetic Crystallographic study of chromium spinels Journal of Applied Physics 37 1436-1437 | 1966 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.519 Å | (100) |
2.954 Å | (50) |
1.476 Å | (35) |
1.607 Å | (30) |
2.088 Å | (25) |
4.822 Å | (15) |
1.705 Å | (15) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earth’s earliest Hadean crust | >4.50 |
8 : Mafic igneous rocks | |
Near-surface Processes | |
26 : Hadean detrital minerals | |
High-𝑇 alteration and/or metamorphism | |
32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
37 : Layered igneous intrusions and related PGE minerals | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
51 : Pyrometamorphic minerals (see also #54 and #56) | <0.36 |
Type Occurrence of Zincochromite
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 1238/1.
Associated Minerals at Type Locality:
Reference:
Nesterov, A.R., Rumyantseva, Y.V. (1987): Zincochromite ZnCr2O4 - a new mineral from Karelia. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva 116, 367-371.
Synonyms of Zincochromite
Other Language Names for Zincochromite
Relationship of Zincochromite to other Species
Member of:
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 | (Al0.67◻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 |
Nichromite | (Ni,Co,Fe)(Cr,Fe,Al)2O4 | 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 |
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Zincochromite associated with Fuchsite | K(Al,Cr)3Si3O10(OH)2 |
1 photo of Zincochromite associated with Clausthalite | PbSe |
1 photo of Zincochromite associated with Roscoelite | K(V3+,Al)2(AlSi3O10)(OH)2 |
1 photo of Zincochromite associated with Chromceladonite | K(MgCr◻)(Si4O10)(OH)2 |
1 photo of Zincochromite associated with Isomertieite | Pd11Sb2As2 |
1 photo of Zincochromite associated with Pseudomertieite | Pd11(Sb,As)4 |
1 photo of Zincochromite associated with Caysichite-(Y) | (Ca,Yb,Er)4Y4(Si8O20)(CO3)6(OH) · 7H2O |
1 photo of Zincochromite associated with Gold | Au |
1 photo of Zincochromite associated with Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
1 photo of Zincochromite associated with Mertieite | Pd8Sb2.5As0.5 |
Related Minerals - Strunz-mindat Grouping
4.BB. | Elgoresyite | (Mg5Si2)O9 |
4.BB. | Chenmingite | FeCr2O4 |
4.BB. | Dellagiustaite | V2+Al2O4 |
4.BB. | Thermaerogenite | CuAl2O4 |
4.BB. | Chukochenite | LiAl5O8 |
4.BB. | Garpenbergite | Mn6◻AsSbO10(OH)2 |
4.BB. | Magnéliite | Ti3+2Ti4+2O7 |
4.BB. | Jianmuite | ZrTi4+Ti3+5Al3O16 |
4.BB.05 | Chromite | Fe2+Cr3+2O4 |
4.BB.05 | Cochromite | CoCr2O4 |
4.BB.05 | Coulsonite | Fe2+V3+2O4 |
4.BB.05 | Cuprospinel | Cu2+Fe3+2O4 |
4.BB.05 | Filipstadite | (Fe3+0.5Sb5+0.5)Mn2O4 |
4.BB.05 | Franklinite | Zn2+Fe3+2O4 |
4.BB.05 | Gahnite | ZnAl2O4 |
4.BB.05 | Galaxite | Mn2+Al2O4 |
4.BB.05 | Hercynite | Fe2+Al2O4 |
4.BB.05 | Jacobsite | Mn2+Fe3+2O4 |
4.BB.05 | Manganochromite | Mn2+Cr2O4 |
4.BB.05 | Magnesiocoulsonite | MgV2O4 |
4.BB.05 | Magnesiochromite | MgCr2O4 |
4.BB.05 | Magnesioferrite | MgFe3+2O4 |
4.BB.05 | Magnetite | Fe2+Fe3+2O4 |
4.BB.05 | Nichromite | (Ni,Co,Fe)(Cr,Fe,Al)2O4 |
4.BB.05 | Qandilite | (Mg,Fe3+)2(Ti,Fe3+,Al)O4 |
4.BB.05 | Spinel | MgAl2O4 |
4.BB.05 | Trevorite | Ni2+Fe3+2O4 |
4.BB.05 | Ulvöspinel | TiFe2+2O4 |
4.BB.05 | Vuorelainenite | Mn2+V3+2O4 |
4.BB.05 | Harmunite | CaFe2O4 |
4.BB.05 | Wernerkrauseite | Ca(Fe3+,Mn3+)2Mn4+O6 |
4.BB.05 | Deltalumite | (Al0.67◻0.33)Al2O4 |
4.BB.05 | Guite | Co2+Co3+2O4 |
4.BB.10 | Hausmannite | Mn2+Mn3+2O4 |
4.BB.10 | Hetaerolite | ZnMn2O4 |
4.BB.10 | Manganostibite | (Mn,Fe)7SbAsO12 |
4.BB.15 | Maghemite | (Fe3+0.67◻0.33)Fe3+2O4 |
4.BB.15 | Titanomaghemite | (Ti4+0.5◻0.5)Fe3+2O4 |
4.BB.20 | Tegengrenite | (Mn3+0.5Sb5+0.5)Mg2O4 |
4.BB.25 | Xieite | Fe2+Cr2O4 |
4.BB.30 | Carmeltazite | ZrAl2Ti4O11 |
4.BB.35 | Feiite | Fe2+2(Fe2+Ti4+)O5 |
4.BB.40 | Maohokite | MgFe2O4 |
4.BB.45 | Tschaunerite | (Fe2+)(Fe2+Ti4+)O4 |
Other Information
Magnetism:
Paramagnetic
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 Zincochromite
mindat.org URL:
https://www.mindat.org/min-4412.html
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References for Zincochromite
Reference List:
Localities for Zincochromite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Argentina | |
| Espeche et al. () |
Australia | |
| ... +1 other reference |
Austria | |
| Kolitsch et al. (2018) |
| Kolitsch et al. (2019) |
Finland | |
| Geological Survey of Finland (2017) |
Ghana | |
| The Canadian Mineralogist Vol. 35 (1997) |
India | |
| Mallick et al. (2005, March) |
Jordan | |
| Galuskina et al. (2021) |
North Macedonia | |
| Ermolaeva et al. (2017) +1 other reference |
Chukanov et al. (2018) +1 other reference | |
Russia | |
| doi.org (n.d.) +1 other reference |
| Pavel.M. Kartashov (n.d.) |
| Nesterov et al. (1987) +1 other reference |
Pekov (1998) | |
| Popov et al. (2019, June) |
Popov et al. (2019, June) | |
Venezuela | |
| Zdenek et al. (2010) |
Quick NavTopAbout ZincochromiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Srednyaya Padma mine, Zaonezhie peninsula, Medvezhyegorsky District, Republic of Karelia, Russia