Chenmingite
A valid IMA mineral species
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Formula:
FeCr2O4
Specific Gravity:
5.27 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named in honor of Chen Ming (陈鸣) (b. 1957), researcher and professor at the Guangzhou Institute of Geochemistry, Chinese Academy of Sciences. He is an expert in high-pressure mineralogy.
Unique Identifiers
Mindat ID:
51979
Long-form identifier:
mindat:1:1:51979:9
GUID
(UUID V4):
(UUID V4):
04315c5c-7c00-48db-9dac-ae42f7d58582
IMA Classification of Chenmingite
Approved
Approval year:
2017
First published:
2019
Type description reference:
Classification of Chenmingite
4.BB.
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
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 |
---|---|---|
Cnm | 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 Chenmingite
Comment:
Harder than chromite
Density:
5.27(2) g/cm3 (Calculated)
Chemistry of Chenmingite
Mindat Formula:
FeCr2O4
Elements listed:
Crystallography of Chenmingite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 9.715(6) Å, b = 2.87(1) Å, c = 9.49(7) Å
Ratio:
a:b:c = 3.385 : 1 : 3.307
Unit Cell V:
264.6 ų
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.672 Å | (100) |
2.637 Å | (37) |
2.387 Å | (49) |
2.366 Å | (20) |
2.071 Å | (28) |
1.585 Å | (23) |
1.262 Å | (21) |
1.431 Å | (18) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 2: Planetesimal differentiation and alteration | 4.566-4.550 |
6 : Secondary asteroid phases | 4.566-4.560 |
Type Occurrence of Chenmingite
General Appearance of Type Material:
Micrometer- to submicrometer-sized lamellae
Place of Conservation of Type Material:
Type material is deposited in the meteorite collections of the Frank H. McClung Museum, University of Tennessee, Knoxville, Tennessee 37996, USA, Tissint section UT2
Geological Setting of Type Material:
Lamellae within precursor chromite grains, next to shock-induced melt pockets, from the Tissint martian meteorite
Reference:
Ma, C., Tschauner, O., Beckett, J.R., Liu, Y., Greenberg, E., Prakapenka, V.B. (2019) Chenmingite, FeCr2O4 in the CaFe2O4-type structure, a shock-induced, high-pressure mineral in the Tissint martian meteorite. American Mineralogist: 104(10): 1521-1529.
Synonyms of Chenmingite
Relationship of Chenmingite to other Species
Member of:
Other Members of this group:
Ellinaite | CaCr2O4 | Orth. mmm (2/m 2/m 2/m) : Pnma |
Harmunite | CaFe2O4 | Orth. mmm (2/m 2/m 2/m) : Pbcm |
Marokite | CaMn3+2O4 | Orth. |
Tschaunerite | (Fe2+)(Fe2+Ti4+)O4 | Orth. mmm (2/m 2/m 2/m) : Cmcm |
Wernerkrauseite | Ca(Fe3+,Mn3+)2Mn4+O6 | Orth. mmm (2/m 2/m 2/m) : Pnma |
Xieite | Fe2+Cr2O4 | Orth. mmm (2/m 2/m 2/m) |
Related Minerals - Strunz-mindat Grouping
4.BB. | Elgoresyite | (Mg5Si2)O9 |
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 | Zincochromite | ZnCr2O4 |
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
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 Chenmingite
mindat.org URL:
https://www.mindat.org/min-51979.html
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External Links:
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References for Chenmingite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017, CNMNC Newsletter No 38. Mineralogical Magazine, 81 (4) 1033-1038 doi:10.1180/minmag.2017.081.062
Localities for Chenmingite
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.
China | |
| Chen et al. (2003) +1 other reference |
Morocco (TL) | |
| Hålenius et al. (2017) +1 other reference |