Schreyerite
A valid IMA mineral species
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About Schreyerite
Formula:
V3+2Ti3O9
Colour:
Reddish brown
Lustre:
Metallic
Hardness:
7
Specific Gravity:
4.46 (Calculated)
Crystal System:
Monoclinic
Name:
For German mineralogist, Werner Schreyer (November 14 1930, NĂŒrnberg - 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
GUID
(UUID V4):
(UUID V4):
c3029d27-0254-4ecc-831d-2300ff5ae6bc
IMA Classification of Schreyerite
Approved
IMA Formula:
V3+2Ti4+3O9
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 IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Sry | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC 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 = 2.700
Max Birefringence:
δ = 2.700
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
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+2Ti3O9
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 Ă
Âł (Calculated from Unit Cell)
Z:
4
Morphology:
Occurs in intergrowth with rutile.
Twinning:
Very fine polysynthetic twinning.
Comment:
Point Group: n.d.
Crystal Structure
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Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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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 Ă | (vs) |
2.874 Ă | (s) |
4.075 Ă | (m) |
3.381 Ă | (m) |
2.432 Ă | (w) |
2.518 Ă | (vvw) |
2.310 Ă | (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:
Reference:
Medenbach, O., Schmetzer, K. (1976) Schreyerit (V2Ti3O9), ein neues Vanadium-Mineral aus Kenya. Naturwissenschaften: 63: 293-294.
Synonyms of Schreyerite
Other Language Names for Schreyerite
Common Associates
Associated Minerals Based on Photo Data:
2 photos of Schreyerite associated with Chalcopyrite | CuFeS2 |
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 |
1 photo of Schreyerite associated with Rutile | TiO2 |
Related Minerals - Strunz-mindat Grouping
4.CB. | Sassite | Ti3+2Ti4+O5 |
4.CB. | Ferrohögbomite-2N2S | [(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2 |
4.CB. | Magnesiohögbomite-6N12S | Mg5Al11TiO23(OH) |
4.CB. | Griffinite | Al2TiO5 |
4.CB. | Zhenruite | (MoO3)2 · H2O |
4.CB. | Pengite | (Pb8Sb3+3)ÎŁ11Sb5+9O35 |
4.CB. | Virgilluethite | MoO3 · H2O |
4.CB.05 | Brizziite | NaSb5+O3 |
4.CB.05 | Corundum | Al2O3 |
4.CB.05 | Ecandrewsite | (Zn,Fe2+,Mn2+)TiO3 |
4.CB.05 | Eskolaite | Cr2O3 |
4.CB.05 | Geikielite | MgTiO3 |
4.CB.05 | Hematite | Fe2O3 |
4.CB.05 | Ilmenite | Fe2+TiO3 |
4.CB.05 | Karelianite | V3+2O3 |
4.CB.05 | Melanostibite | Mn2+2Fe3+Sb5+O6 |
4.CB.05 | Pyrophanite | Mn2+TiO3 |
4.CB.05 | Akimotoite | (Mg,Fe2+)SiO3 |
4.CB.05 | Auroantimonate | AuSbO3 |
4.CB.05 | UM1998-11-O-AuHSb | Au+2Sb3+O2(OH) |
4.CB.05 | Tistarite | Ti3+2O3 |
4.CB.05 | Unnamed (Fe-Cr Oxide) | FeCrO3 |
4.CB.05 | Hemleyite | (Fe2+0.48Mg0.37Ca0.04Na0.04Mn2+0.03Al0.03Cr3+0.01)sum=1.00Si1.00O3 |
4.CB.10 | Avicennite | Tl2O3 |
4.CB.10 | Bixbyite-(Mn) | Mn3+2O3 |
4.CB.10 | Bixbyite-(Fe) | (Fe,Mn)2O3 |
4.CB.15 | Armalcolite | (Mg,Fe2+)Ti2O5 |
4.CB.15 | Pseudobrookite | Fe2TiO5 |
4.CB.15 | Ferropseudobrookite | Fe2+Ti2O5 |
4.CB.20 | Zincohögbomite-2N2S | [(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(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 | Magnesiohögbomite-2N4S | (Mg8.43Fe2+1.57)sum=10Al22Ti4+2O46(OH)2 |
4.CB.20 | Magnesiobeltrandoite-2N3S | (Mg6Al2)(Al18Fe3+2)O38(OH)2 |
4.CB.20 | Zincovelesite-6N6S | Zn3(Fe3+,Mn3+,Al,Ti)8O15(OH) |
4.CB.25 | Pseudorutile | Fe2Ti3O9 |
4.CB.25 | Kleberite | FeTi6O11(OH)5 |
4.CB.30 | Berdesinskiite | V3+2TiO5 |
4.CB.30 | Oxyvanite | V3+2V4+O5 |
4.CB.30 | Kaitianite | Ti3+2Ti4+O5 |
4.CB.35 | Olkhonskite | (Cr,V)2Ti3O9 |
4.CB.35 | Machiite | Al2Ti3O9 |
4.CB.35 | Vestaite | (Ti4+Fe2+)Ti4+3O9 |
4.CB.40 | Kamiokite | Fe2Mo3O8 |
4.CB.40 | Nolanite | V3+8Fe3+2O14(OH)2 |
4.CB.40 | Rinmanite | Zn2Sb2Mg2Fe4O14(OH)2 |
4.CB.40 | Iseite | Mn2Mo3O8 |
4.CB.40 | Majindeite | Mg2Mo3O8 |
4.CB.45 | Claudetite | As2O3 |
4.CB.45 | Stibioclaudetite | AsSbO3 |
4.CB.50 | Arsenolite | As2O3 |
4.CB.50 | Senarmontite | Sb2O3 |
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:
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
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).
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 | |
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Czech Republic | |
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Fiji | |
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Finland | |
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India | |
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Kenya (TL) | |
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Madagascar | |
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Russia | |
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Spain | |
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Sweden | |
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Zambia | |
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SĂ€tra Mine, Doverstorp ore field, FinspĂ„ng, Ăstergötland County, Sweden