Chenmingite
A valid IMA mineral species
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Chen Ming
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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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
symbol to view information about a locality.
The 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).
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 |
