Schreyerite
A valid IMA mineral species
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About Schreyerite
Werner Schreyer
Formula:
V3+2Ti4+3O9
Colour:
Reddish brown
Lustre:
Metallic
Hardness:
7
Specific Gravity:
4.46 (Calculated)
Crystal System:
Monoclinic
Name:
For German mineralogist, Werner Schreyer (November 14 1930, Nürnberg - February 12 2006, Bochum). He was a professor at Ruhr University Bochum from 1966-1996. He was awarded the Abraham-Gottlob-Werner Medal (German Mineralogical Society) in 1991 and the Roebling Medal (Mineralogical Society of America) in 2002. He made significant mineralogical and petrological contributions on kornerupine- and sapphirine-bearing rocks.
Type Locality:
Unique Identifiers
Mindat ID:
3583
Long-form identifier:
mindat:1:1:3583:1
IMA Classification of Schreyerite
Approved
Approval year:
1976
First published:
1976
Classification of Schreyerite
4.CB.35
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
8.4.1.1
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
4 : A2B3O9
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
4 : A2B3O9
7.12.14
7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
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 for Standard |
|---|---|---|
| Sry | 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 Schreyerite
Metallic
Transparency:
Opaque
Colour:
Reddish brown
Hardness:
7 on Mohs scale
Hardness:
VHN100=1100 - 1200 - Vickers
Density:
4.46 g/cm3 (Calculated)
Optical Data of Schreyerite
Type:
Biaxial
RI values:
nα = 2.7
Max. Birefringence:
δ = 0.000
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Anisotropism:
Moderate
Bireflectance:
White to brownish
Dispersion:
relatively strong
Colour in reflected light:
Gray
Internal Reflections:
None
Pleochroism:
Weak
Comments:
yellow-brown to reddish brown.
Comments:
The mean value of reflectivity for 546 nm (Na light) is 21%.
Chemistry of Schreyerite
Mindat Formula:
V3+2Ti4+3O9
Element Weights:
Elements listed:
Crystallography of Schreyerite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 17.102(2) Å, b = 5.0253(5) Å, c = 7.0579(8) Å
β = 106.636(10)°
β = 106.636(10)°
Ratio:
a:b:c = 3.403 : 1 : 1.404
Unit Cell V:
581.19 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Occurs in intergrowth with rutile.
Twinning:
Very fine polysynthetic twinning.
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) |
|---|---|---|---|---|---|---|---|
| 0004005 | Schreyerite | Dobelin N, Reznitsky L Z, Sklyarov E V, Armbruster T, Medenbach O (2006) Schreyerite, V2Ti3O9: New occurrence and crystal structure American Mineralogist 91 196-202 |  | 2006 | Sludyanka complex at the southern shore of Lake Baikal, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.737 Å | (vs) |
| 2.874 Å | (s) |
| 4.075 Å | (m) |
| 3.381 Å | (m) |
| 2.432 Å | (w) |
| 2.518 Å | (vvw) |
| 2.310 Å | (vvw) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Schreyerite
Place of Conservation of Type Material:
University of Heidelberg, Heidelberg, Germany; National Museum of Natural History, Washington, D.C., USA, 136230.
Geological Setting of Type Material:
Intergrowths with rutile in highly metamorphosed gneiss.
Associated Minerals at Type Locality:
Synonyms of Schreyerite
Other Language Names for Schreyerite
Common Associates
Associations Based on Photo Data:
| 6 photos of Schreyerite associated with Chalcopyrite | CuFeS2 |
| 4 photos of Schreyerite associated with Nekrasovite | Cu26V2(Sn,As,Sb)6S32 |
| 4 photos of Schreyerite associated with Colusite | Cu13VAs3S16 |
| 4 photos of Schreyerite associated with Pyrite | FeS2 |
| 4 photos of Schreyerite associated with Tennantite-(Zn) | Cu6(Cu4Zn2)As4S12S |
| 2 photos of Schreyerite associated with Galena | PbS |
| 2 photos of Schreyerite associated with Roscoelite | KV3+2(AlSi3O10)(OH)2 |
| 1 photo of Schreyerite associated with Berdesinskiite | V3+2TiO5 |
| 1 photo of Schreyerite associated with Kornerupine | Mg3Al6(Si,Al,B)5O21(OH) |
| 1 photo of Schreyerite associated with Olkhonskite | (Cr,V)2Ti3O9 |
Related Minerals - Strunz-mindat Grouping
| 4.CB. | Magnesiohögbomite-6N12S | Mg5Al11TiO23(OH) |
| 4.CB. | Kidodite | BaMg2Fe16O27 |
| 4.CB. | Ferrohögbomite-2N2S | [(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2 |
| 4.CB. | Zhenruite | (MoO3)2 · H2O |
| 4.CB. | Fuyuanite | Mg7Nb6O18(OH)8 |
| 4.CB. | Virgilluethite | MoO3 · H2O |
| 4.CB. | Pengite | (Pb8Sb3+3)Σ11Sb5+9O35 |
| 4.CB.05 | Brizziite | NaSb5+O3 |
| 4.CB.05 | Tistarite | Ti3+2O3 |
| 4.CB.05 | Hematite | Fe2O3 |
| 4.CB.05 | Ecandrewsite | ZnTiO3 |
| 4.CB.05 | Melanostibite | Mn2+2Fe3+Sb5+O6 |
| 4.CB.05 | 'UM1998-11-O-AuHSb' | Au+2Sb3+O2(OH) |
| 4.CB.05 | Karelianite | V3+2O3 |
| 4.CB.05 | Corundum | Al2O3 |
| 4.CB.05 | Eskolaite | Cr2O3 |
| 4.CB.05 | Geikielite | MgTiO3 |
| 4.CB.05 | Akimotoite | MgSiO3 |
| 4.CB.05 | 'Unnamed (Fe-Cr Oxide)' | FeCrO3 |
| 4.CB.05 | 'Auroantimonate' | AuSbO3 |
| 4.CB.05 | Hemleyite | Fe2+SiO3 |
| 4.CB.05 | Ilmenite | Fe2+TiO3 |
| 4.CB.05 | Pyrophanite | Mn2+TiO3 |
| 4.CB.10 | Bixbyite-(Fe) | (Fe,Mn)2O3 |
| 4.CB.10 | Bixbyite-(Mn) | Mn3+2O3 |
| 4.CB.10 | Avicennite | Tl3+2O3 |
| 4.CB.15 | Armalcolite | MgTi4+2O5 |
| 4.CB.15 | Ferropseudobrookite | Fe2+Ti4+2O5 |
| 4.CB.15 | Griffinite | Al2Ti4+O5 |
| 4.CB.15 | Pseudobrookite Group | |
| 4.CB.15 | Sassite | Ti3+2Ti4+O5 |
| 4.CB.15 | Pseudobrookite | Fe3+2Ti4+O5 |
| 4.CB.20 | Zincovelesite-6N6S | Zn3(Fe3+,Mn3+,Al,Ti)8O15(OH) |
| 4.CB.20 | Magnesiohögbomite-2N4S | (Mg8.43Fe2+1.57)Σ=10Al22Ti4+2O46(OH)2 |
| 4.CB.20 | Magnesiobeltrandoite-2N3S | (Mg6Al2)(Al18Fe3+2)O38(OH)2 |
| 4.CB.20 | Zincohögbomite-2N6S | [(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2 |
| 4.CB.20 | Magnesiohögbomite-6N6S | [(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6 |
| 4.CB.20 | Magnesiohögbomite-2N3S | [(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2 |
| 4.CB.20 | Magnesiohögbomite-2N2S | [(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2 |
| 4.CB.20 | 'Ferrohögbomite-6N12S' | [(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6 |
| 4.CB.20 | Zincohögbomite-2N2S | [(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2 |
| 4.CB.25 | Kleberite | FeTi6O11(OH)5 |
| 4.CB.25 | Pseudorutile | Fe3+2Ti4+3O9 |
| 4.CB.30 | Oxyvanite | V3+2V4+O5 |
| 4.CB.30 | Berdesinskiite | V3+2TiO5 |
| 4.CB.30 | Kaitianite | Ti3+2Ti4+O5 |
| 4.CB.35 | Machiite | Al2Ti3O9 |
| 4.CB.35 | Vestaite | (Ti4+Fe2+)Ti4+3O9 |
| 4.CB.35 | Olkhonskite | (Cr,V)2Ti3O9 |
| 4.CB.40 | Zincorinmanite-(Zn) | Zn2Sb2(Fe3+4Zn2)O14(OH)2 |
| 4.CB.40 | Majindeite | Mg2Mo3O8 |
| 4.CB.40 | Almagreraite | CuZnMn4+3O8 |
| 4.CB.40 | Kamiokite | Fe2Mo3O8 |
| 4.CB.40 | Nolanite | V3+8Fe3+2O14(OH)2 |
| 4.CB.40 | Iseite | Mn2Mo3O8 |
| 4.CB.40 | Rinmanite | Zn2Sb2Mg2Fe4O14(OH)2 |
| 4.CB.45 | Stibioclaudetite | AsSbO3 |
| 4.CB.45 | Claudetite | As2O3 |
| 4.CB.50 | Senarmontite | Sb2O3 |
| 4.CB.50 | Arsenolite | As2O3 |
| 4.CB.55 | Valentinite | Sb2O3 |
| 4.CB.60 | Bismite | Bi2O3 |
| 4.CB.65 | Sphaerobismoite | Bi2O3 |
| 4.CB.70 | Sillénite | Bi12SiO20 |
| 4.CB.75 | Kyzylkumite | V3+Ti2O5(OH) |
| 4.CB.80 | 'Tietaiyangite' | Fe3+4Fe2+TiO9 |
| 4.CB.85 | Liuite | FeTiO3 |
| 4.CB.90 | Luogufengite | Fe2O3 |
| 4.CB.95 | Wangdaodeite | FeTiO3 |
Other Information
Notes:
No solubility in inorganic acids.
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 Schreyerite
mindat.org URL:
https://www.mindat.org/min-3583.html
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References for Schreyerite
Reference List:
Medenbach, O., Schmetzer, K. (1976) Schreyerit (V2Ti3O9), ein neues Vanadium-Mineral aus Kenya. Die Naturwissenschaften, 63 (6). 293-294 doi:10.1007/bf00624019
Medenbach, Olaf, Schmerzer, Karl (1978) Schreyerite, V2Ti3O9, a new mineral. American Mineralogist, 63 (11-12) 1182-1186
Zakrzewski, M. A., Burke, E. A. J., Lustenhouwer, W. J. (1982) Vuorelainenite, a new spinel, and associated minerals from the Satra (Doverstorp) pyrite deposit, central Sweden. The Canadian Mineralogist, 20 (2) 281-290
Döbelin, Nicola, Reznitsky, Leonid Z., Sklyarov, Evgeny V., Armbruster, Thomas, Medenbach, Olaf (2006) Schreyerite, V2Ti3O9: New occurrence and crystal structure. American Mineralogist, 91 (1) 196-202 doi:10.2138/am.2006.1893
Reznitsky, L. Z., Sklyarov, E. V., Armbruster, T., Ushchapovskaya, Z. F., Galuskin, E. V., Polekhovsky, Yu. S., Barash, I. G. (2010) Oxyvanite, V3O5, a new mineral species and the oxyvanite-berdesinskiite V2TiO5 series from metamorphic rocks of the Slyudyanka Complex, southern Baikal region. Geology of Ore Deposits, 52 (7) 574-583 doi:10.1134/s1075701510070068
Localities for Schreyerite
Showing 18 localities.
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 | |
| Huijin Lu and Jian Wang (2005) |
Czech Republic | |
| Veselovský et al. (2021) |
| Houzar et al. (2011) |
Fiji | |
| 16th Australian Geological Convention +3 other references |
Finland | |
| Kompanchenko et al. (2018) |
India | |
| Höller et al. (1997) +1 other reference |
Kenya (TL) | |
| Lapis 8 (4) +1 other reference |
Madagascar | |
| Di Cecco et al. (2018) |
| Di Cecco et al. (2018) | |
Russia | |
| Dubinina et al. (2011) |
| Mandarino (1996) +2 other references |
| Döbelin et al. (2006) |
| Proceedings of the Russian Mineralogical Society 136 (5) +2 other references | |
| Kompanchenko et al. (2019) |
| Pavel M. Kartashov analytical data (2013) |
Spain | |
| Castillo-Oliver et al. (2019) |
Sweden | |
| Zakrzewski et al. (1982) +2 other references |
Zambia | |
| MacIntyre (2019) |
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Sätra Mine, Doverstorp ore field, Finspång, Östergötland County, Sweden