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Schreyerite

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Formula:
V
3+
2
Ti
 
3
O
 
9
System:MonoclinicColour:Black
Hardness:7
Name:For German mineralogist, Werner Schreyer (b. 1930).
This page provides mineralogical data about Schreyerite.

Classification of Schreyerite

IMA status:Approved 1976
Strunz 8th edition ID:4/C.26-20
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:8.4.1.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
4 : A2B3O9
Hey's CIM Ref.:7.12.14

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
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Type Occurrence of Schreyerite

Type Locality:Lasamba Hill, Kwale District, Coast Province, Kenya
Year of Discovery:1976

Physical Properties of Schreyerite

Lustre:Metallic
Colour:Black
Hardness (Mohs):7

Crystallography of Schreyerite

Crystal System:Monoclinic
Cell Parameters:a = 7.06Å, b = 5.01Å, c = 18.74Å
β = 119.4°
Ratio:a:b:c = 1.409 : 1 : 3.741
Unit Cell Volume:V 577.48 ų (Calculated from Unit Cell)

Optical Data of Schreyerite

Type:Biaxial
RI values: nα = 2.700
Maximum Birefringence:δ = 2.700

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively strong

Chemical Properties of Schreyerite

Formula:
V
3+
2
Ti
 
3
O
 
9
Simplified for copy/paste:V3+2Ti3O9
Essential elements:O, Ti, V
All elements listed in formula:O, Ti, V

Relationship of Schreyerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.CB.05Brizziite
NaSb
5+
 
O
 
3
4.CB.05Corundum
Al
 
2
O
 
3
4.CB.05Ecandrewsite
(Zn,Fe
2+
 
,Mn
2+
 
)TiO
 
3
4.CB.05Eskolaite
Cr
 
2
O
 
3
4.CB.05Geikielite
MgTiO
 
3
4.CB.05Hematite
Fe
 
2
O
 
3
4.CB.05Ilmenite
Fe
2+
 
TiO
 
3
4.CB.05Karelianite
V
3+
2
O
 
3
4.CB.05Melanostibite
Mn
2+
 
(Sb
5+
 
,Fe
3+
 
)O
 
3
4.CB.05Pyrophanite
Mn
2+
 
TiO
 
3
4.CB.05Akimotoite
(Mg,Fe
2+
 
)SiO
 
3
4.CB.05Auroantimonate
AuSbO
 
3
4.CB.05Romanite
(◻,Pb,Ca)UFe
2+
2
(Ti,Fe
3+
 
)
 
6
Ti
 
12
O
 
38
4.CB.05UM1998-11-O-AuHSb
Au
+
2
Sb
3+
 
O
 
2
(OH)
4.CB.05Tistarite
Ti
3+
2
O
 
3
4.CB.10Avicennite
Tl
 
2
O
 
3
4.CB.10Bixbyite
Mn
3+
2
O
 
3
4.CB.15Armalcolite
(Mg,Fe
2+
 
)Ti
 
2
O
 
5
4.CB.15Pseudobrookite
Fe
 
2
TiO
 
5
4.CB.20Zincohögbomite-2N2S
[(Zn,Al,Fe
2+
 
)
 
3
(Al,Fe
3+
 
,Ti)
 
8
O
 
15
(OH)]
 
2
4.CB.20Zincohögbomite-2N6S
[(Zn,Mg)
 
7
(Al,Fe
3+
 
,Ti)
 
16
O
 
31
(OH)]
 
2
4.CB.20Magnesiohögbomite-6N6S
[(Mg,Fe
2+
 
)
 
3
(Al,Ti,Fe
3+
 
)
 
8
O
 
15
(OH)]
 
6
4.CB.20Magnesiohögbomite-2N3S
[(Mg,Fe
2+
 
,Zn)
 
4
(Al,Ti,Fe
3+
 
)
 
10
O
 
19
(OH)]
 
2
4.CB.20Magnesiohögbomite-2N2S
[(Mg,Fe
2+
 
)
 
3
[Al
 
7
(Ti,Fe
3+
 
)]O
 
15
(OH)]
 
2
4.CB.20Ferrohögbomite-6N12S
[(Fe
2+
 
,Mg,Zn)
 
5
(Al,Ti,Fe
3+
 
)
 
12
O
 
23
(OH)]
 
6
4.CB.25Pseudorutile
Fe
 
2
Ti
 
3
O
 
9
4.CB.25Kleberite
FeTi
 
6
O
 
11
(OH)
 
5
4.CB.30Berdesinskiite
V
3+
2
TiO
 
5
4.CB.30Oxyvanite
V
3+
2
V
4+
 
O
 
5
4.CB.35Olkhonskite
(Cr,V)
 
2
Ti
 
3
O
 
9
4.CB.40Kamiokite
Fe
 
2
Mo
 
3
O
 
8
4.CB.40Nolanite
(V
3+
 
,Fe
3+
 
,Fe
2+
 
,Ti)
 
10
O
 
14
(OH)
 
2
4.CB.40Rinmanite
Zn
 
2
Sb
 
2
Mg
 
2
Fe
 
4
O
 
14
(OH)
 
2
4.CB.40Iseite
Mn
 
2
Mo
 
3
O
 
8
4.CB.40Majindeite
Mg
 
2
Mo
 
3
O
 
8
4.CB.45Claudetite
As
 
2
O
 
3
4.CB.45Stibioclaudetite
AsSbO
 
3
4.CB.50Arsenolite
As
 
2
O
 
3
4.CB.50Sénarmontite
Sb
 
2
O
 
3
4.CB.55Valentinite
Sb
 
2
O
 
3
4.CB.60Bismite
Bi
 
2
O
 
3
4.CB.65Sphaerobismoite
Bi
 
2
O
 
3
4.CB.70Sillénite
Bi
 
12
SiO
 
20
4.CB.75Kyzylkumite
Ti
 
2
V
3+
 
O
 
5
(OH)
4.CB.80Tietaiyangite
Fe
3+
4
Fe
2+
 
TiO
 
9
Related Minerals - Hey's Index Grouping:

- +
7.12.1Montroseite
(V
3+
 
,Fe
3+
 
)O(OH)
7.12.2 Scherbinaite
7.12.3Paramontroseite
V
4+
 
O
 
2
7.12.4Häggite
V
3+
 
V
4+
 
O
 
2
(OH)
 
3
7.12.5Duttonite
V
4+
 
O(OH)
 
2
7.12.6Doloresite
V
4+
3
O
 
4
(OH)
 
4
7.12.7Lenoblite
V
4+
2
O
 
4
· 2H
 
2
O
7.12.8Navajoite
Fe
3+
 
V
5+
9
O
 
24
· 12H
 
2
O
7.12.9Vanoxite
V
4+
4
V
5+
2
O
 
13
· 8H
 
2
O
7.12.10Bariandite
Al
 
0.6
(V
5+
 
,V
4+
 
)
 
8
O
 
20
· 9H
 
2
O
7.12.11Corvusite
(Na,K,Ca,Mg)
 
2
(V
5+
 
,V
4+
 
,Fe
2+
 
)
 
8
O
 
20
· 6-10H
 
2
O
7.12.12Simplotite
CaV
4+
4
O
 
9
· 5H
 
2
O
7.12.13Kyzylkumite
Ti
 
2
V
3+
 
O
 
5
(OH)
7.12.15Berdesinskiite
V
3+
2
TiO
 
5
7.12.16Tivanite
V
3+
 
TiO
 
3
(OH)
7.12.17Mannardite
Ba(Ti
4+
6
V
3+
2
)O
 
16
7.12.18Karelianite
V
3+
2
O
 
3
7.12.19Coulsonite
Fe
2+
 
V
3+
2
O
 
4
7.12.20Nolanite
(V
3+
 
,Fe
3+
 
,Fe
2+
 
,Ti)
 
10
O
 
14
(OH)
 
2
7.12.21Vuorelainenite
(Mn,Fe)(V,Cr)
 
2
O
 
4
7.12.22Tantite
Ta
 
2
O
 
5
7.12.23Kimrobinsonite
(Ta,Nb)(OH)
 
5-2x
(O,CO
 
3
)
 
x
; x near 1.2

Other Names for Schreyerite

Synonyms:
IMA1976-004
Other Languages:
German:Schreyerit
Russian:Шрейерит
Simplified Chinese:钒钛矿
Spanish:Schreyerita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Schreyerite

Reference List:

- +
American Mineralogist (1978): 63: 1182-1186.

Neues Jahrbuch für Mineralogie, Monatshefte (1983): 110.

Dobelin, N., Reznitsky, L.Z., Sklyarov, E.V., Armbruster, Th., Medenbach, O. (2006): Schreyerite, V2Ti3O9: new occurrence and crystal structure. American Mineralogist, 91, 196-202.

Internet Links for Schreyerite

Search Engines:
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  • External Links:
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  • Look for Schreyerite on Wikipedia
  • Look for Schreyerite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Schreyerite details from Handbook of Mineralogy (PDF)
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  • Localities for Schreyerite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    China
     
    • Zhejiang Province
      • Hangzhou Prefecture
        • Yuhang District
    Huijin Lu and Jian Wang (2005): Mineral Deposits 24(5), 567-574
    Fiji
     
    • Viti Levu
      • Tavua Gold Field
        • Vatukoula
    16th Australian Geological Convention, Adelaide, ; Spry, P. G., & Scherbarth, N. L. (2006). The gold–vanadium–tellurium association at the Tuvatu gold–silver prospect, Fiji: conditions of ore deposition. Mineralogy and Petrology, 87(3-4), 171-186
    India
     
    • Rajasthan (Rajputana)
      • Ajmer Division
        • Bhilwara District
    Höller, W., and Gandhi, S.M. (1997): Mineralogy and Petrology 60, 99-119.
    Kenya
     
    • Coast Province
      • Kwale District
    Lapis 8(4), 25 (1983)
    Russia
     
    • Eastern-Siberian Region
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Lake Baikal area
    [MinRec 27:304]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    N. Dobelin et al.: American Mineralogist 91:196-202 (2006)
    Proceedings of the Russian Mineralogical Society 136(5), 65-75.
    • Northern Region
      • Karelia Republic
        • Lake Onega
          • Zaonezhie peninsula
            • Velikaya Guba uran-vanadium deposit
    Pavel M/ Kartashov analytical data (2013)
    Sweden
     
    • Östergötland
      • Finspång
        • Doverstorp ore field
    Zakrzewski et al (1982): Can.Min. 20, 281-290; Döbelin, N., Reznitsky, L. Z., Sklyarov, E. V., Armbruster, T. & Medenbach, O. (2006): Schreyerite, V2Ti3O9: New occurrence and crystal structure. American Mineralogist. 91, 196-202
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