Tegengrenite
A valid IMA mineral species
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About Tegengrenite
Felix R. Tegengren
Formula:
(Mn3+0.5Sb5+0.5)Mg2O4
Colour:
Deep ruby red
Lustre:
Sub-Adamantine
Specific Gravity:
4.58 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
Named in honor of Felix Reinhold Tegengren (5 May 1884, Vasa, Finland - 2 March 1980, Sollentuna, Sweden), geologist and expert on ore deposits of Sweden and China.
The Fe3+ analogue of filipstadite.
Chemically somewhatvsimilar to manganoschafarzikite, melanostibite, garpenbergite.
Chemically somewhatvsimilar to manganoschafarzikite, melanostibite, garpenbergite.
Unique Identifiers
Mindat ID:
7072
Long-form identifier:
mindat:1:1:7072:6
GUID
(UUID V4):
(UUID V4):
5b7df254-492b-4930-85a5-5a873e2ca132
IMA Classification of Tegengrenite
Approved
IMA status notes:
Redefined by the IMA
Approval year:
1999
First published:
2000
Approval history:
Redefined by IMA as (Mn3+0.5Sb5+0.5)Mg2O04 (Bosi et al., 2019).
Classification of Tegengrenite
4.BB.20
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 IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Teg | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Tegengrenite
Sub-Adamantine
Transparency:
Translucent
Colour:
Deep ruby red
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.58 g/cm3 (Calculated)
Optical Data of Tegengrenite
Anisotropism:
observed
Reflectivity:
| Wavelength | R |
|---|---|
| 470nm | 10.4% |
| 546nm | 10.0% |
| 589nm | 9.9% |
| 650nm | 9.8% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 10.4%.
Colour in reflected light:
gray
Internal Reflections:
orange-red
Chemistry of Tegengrenite
Mindat Formula:
(Mn3+0.5Sb5+0.5)Mg2O4
Elements listed:
Crystallography of Tegengrenite
Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
R3
Cell Parameters:
a = 16.0825(9) Å, c = 14.8144(8) Å
Ratio:
a:c = 1 : 0.921
Unit Cell V:
3,318.35 Ă
Âł (Calculated from Unit Cell)
Z:
42
Morphology:
Pseudocubic
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.98 Ă | (20) |
| 4.32 Ă | (19) |
| 4.24 Ă | (18) |
| 3.052 Ă | (33) |
| 2.608 Ă | (100) |
| 2.162 Ă | (28) |
| 1.665 Ă | (30) |
| 1.531 Ă | (26) |
| 1.527 Ă | (29) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-đ alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Tegengrenite
General Appearance of Type Material:
Deep red octahedra up to 150 ÎŒm in size
Place of Conservation of Type Material:
Swedish Museum of Natural History, Stockholm (980408).
Empirical Formula of Type Material:
Mg2+1.22Mn2+0.82Zn0.07(Sb0.50Mn3+0.23Si0.06Ti0.04Al0.03Fe0.02)O4
Chemical Analysis of Type Material:
| MgO | 21.83 % |
|---|---|
| Al2O3 | 0.76 % |
| SiO2 | 1.70 % |
| Sb2O5 | 36.13 % |
| TiO2 | 1.40 % |
| Fe2O3 | 0.78 % |
| MnO | 25.74 % |
| Mn2O3 | 8.14 % |
| ZnO | 2.66 % |
| Total: | 99.14 % |
Geological Setting of Type Material:
Manganese ore
Associated Minerals at Type Locality:
Reference:
Holtstam D., Larsson, A. (2000) Tegengrenite, a new, rhombohedral spinel-related Sb mineral from the Jakobsberg Fe-Mn deposit, VĂ€rmland, Sweden. American Mineralogist 85, 1315-1320
Synonyms of Tegengrenite
Other Language Names for Tegengrenite
German:Tegengrenit
Spanish:Tegengrenita
Relationship of Tegengrenite to other Species
Member of:
Other Members of this group:
| Ahrensite | SiFe2O4 | Iso. m3m (4/m 3 2/m) |
| Brunogeierite | Ge4+Fe2+2O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| Filipstadite | (Fe3+0.5Sb5+0.5)Mn2O4 | Iso. |
| Qandilite | (Mg,Fe3+)2(Ti,Fe3+,Al)O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| Ringwoodite | (Mg,Fe2+)2SiO4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| Ulvöspinel | TiFe2+2O4 | Iso. m3m (4/m 3 2/m) : Fd3m |
Common Associates
Associated Minerals Based on Photo Data:
| 4 photos of Tegengrenite associated with Hausmannite | Mn2+Mn3+2O4 |
| 4 photos of Tegengrenite associated with Manganosite | MnO |
| 1 photo of Tegengrenite associated with Ingersonite | Ca3Mn2+Sb5+4O14 |
| 1 photo of Tegengrenite associated with Filipstadite | (Fe3+0.5Sb5+0.5)Mn2O4 |
| 1 photo of Tegengrenite associated with Katoptrite | (Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20 |
| 1 photo of Tegengrenite associated with Pyrochroite | Mn(OH)2 |
| 1 photo of Tegengrenite associated with Calcite | CaCO3 |
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 | Mn6â»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 | (Al0.67â»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+0.67â»0.33)Fe3+2O4 |
| 4.BB.15 | Titanomaghemite | (Ti4+0.5â»0.5)Fe3+2O4 |
| 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 Tegengrenite
mindat.org URL:
https://www.mindat.org/min-7072.html
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References for Tegengrenite
Reference List:
Holtstam, Dan, Larsson, Ann-Kristin (2000) Tegengrenite, a new, rhombohedral spinel-related Sb mineral from the Jakobsberg Fe-Mn deposit, VĂ€rmland, Sweden. American Mineralogist, 85 (9) 1315-1320 doi:10.2138/am-2000-8-926
Localities for Tegengrenite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
Sweden | |
| Gatedal (2003) |
| The Mineralogical Record: 32: 311. +5 other references |
| Gatedal (n.d.) |
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Kitteln Mine, Nordmark Odal Field, Filipstad, VĂ€rmland County, Sweden