Tschaunerite
A valid IMA mineral species
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Formula:
(Fe2+)(Fe2+Ti4+)O4
Colour:
Black
Lustre:
Metallic
Specific Gravity:
6.41 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named in honor of Oliver Tschauner, a geophysicist at the University of Nevada, Las Vegas, for his significant contributions to mineral physics and to the discovery and characterization of high-pressure minerals.
Type Locality:
Dimorph of:
Unique Identifiers
Mindat ID:
53238
Long-form identifier:
mindat:1:1:53238:3
GUID
(UUID V4):
(UUID V4):
ab2a6dd1-a257-4ef6-b6b4-2506660e957d
IMA Classification of Tschaunerite
Classification of Tschaunerite
4.BB.45
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 |
|---|---|---|
| Tsc | 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 Tschaunerite
Chemistry of Tschaunerite
Mindat Formula:
(Fe2+)(Fe2+Ti4+)O4
Elements listed:
Crystallography of Tschaunerite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Setting:
Cmcm
Cell Parameters:
a = 2.708(16) Å, b = 9.216(8) Å, c = 9.103(4) Å
Ratio:
a:b:c = 0.294 : 1 : 0.988
Unit Cell V:
227.2 ų
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.534 Å | (100) |
| 2.498 Å | (25) |
| 2.304 Å | (27) |
| 2.256 Å | (31) |
| 1.983 Å | (63) |
| 1.855 Å | (33) |
| 1.49 Å | (37) |
| 1.194 Å | (19) |
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 Tschaunerite
General Appearance of Type Material:
Lathe-shaped crystals, 1 – 5 µm in size.
Place of Conservation of Type Material:
Deposited in the E. Stolper Martian Meteorite Collection of the Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, USA, thin section Shergotty-1
Geological Setting of Type Material:
In a Fe-, Ti-rich clast within a shock-induced melt pocket, in a highly shocked Martian meteorite.
Associated Minerals at Type Locality:
Synonyms of Tschaunerite
Relationship of Tschaunerite to other Species
Member of:
Other Members of this group:
| Chenmingite | FeCr2O4 | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 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. |
| 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. | 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 | 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 |
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 Tschaunerite
mindat.org URL:
https://www.mindat.org/min-53238.html
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External Links:
References for Tschaunerite
Localities for Tschaunerite
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.
India (TL) | |
| Hålenius et al. (2018) +1 other reference |
