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Schreyerite

Big Photo

Sätra Mine, Doverstorp ore field, Finspång, Östergötland, Sweden
© Maurice de Graaf

Formula:
V
 
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
 
2
Ti
 
3
O
 
9
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
 
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
SbO
 
2
(OH)
4.CB.05Tistarite
Ti
 
2
O
 
3
4.CB.10Avicennite
Tl
 
2
O
 
3
4.CB.10Bixbyite
(Mn
3+
 
,Fe
3+
 
)
 
2
O
 
3
4.CB.15Armalcolite
(Mg,Fe
2+
 
)Ti
 
2
O
 
5
4.CB.15Pseudobrookite
Fe
 
2
TiO
 
5
4.CB.15Mongshanite
(Mg,Cr,Fe
2+
 
)
 
2
(Ti,Zr)
 
5
O
 
12
4.CB.20Zincohögbomite-2N2S
(Zn,Al,Fe)
 
2
(Al,Fe,Ti)
 
8
O
 
15
(OH)
4.CB.20Zincohögbomite-2N6S
(Zn,Al)
 
7
(Al,Fe,Ti,Mg)
 
16
O
 
31
(OH)
4.CB.20Magnesiohögbomite-6N6S
(Mg,Al,Fe)
 
2
(Al,Ti)
 
8
O
 
15
(OH)
4.CB.20Magnesiohögbomite-2N3S
(Mg,Fe,Zn,Ti)
 
3
(Al,Fe)
 
10
O
 
19
(OH)
4.CB.20Magnesiohögbomite-2N2S
(Mg,Al,Fe)
 
2
(Al,Fe,Ti)
 
8
O
 
15
(OH)
4.CB.20Ferrohögbomite-6N12S
(Fe,Mg,Zn)
 
4
(Al,Ti,Fe)
 
12
O
 
23
(OH)
4.CB.25Pseudorutile
Fe
 
2
Ti
 
3
O
 
9
4.CB.30Berdesinskiite
V
3+
2
TiO
 
5
4.CB.30Oxyvanite
V
 
3
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,Fe,Fe,Ti)
 
10
O
 
14
(OH)
 
2
4.CB.40Rinmanite
Zn
 
2
Sb
 
2
Mg
 
2
Fe
 
4
O
 
14
(OH)
 
2
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
V
 
2
Ti
 
3
O
 
9
4.CB.80Tietaiyangite
Fe
3+
4
Fe
2+
 
TiO
 
9
Related Minerals - Hey's Index Grouping:

- +
7.12.1Montroseite
(V,Fe)O(OH)
7.12.2 Scherbinaite
7.12.3Paramontroseite
VO
 
2
7.12.4Häggite
V
 
2
O
 
2
(OH)
 
3
7.12.5Duttonite
VO(OH)
 
2
7.12.6Doloresite
3V
 
2
O
 
4
·4H
 
2
O
7.12.7Lenoblite
V
 
2
O
 
4
·2H
 
2
O
7.12.8Navajoite
V
 
2
O
 
5
 · 3H
 
2
O
7.12.9Vanoxite
V
 
6
O
 
13
·8H
 
2
O
7.12.10Bariandite
Al
 
3
[(V
5+
 
,V
4+
 
)
 
4
O
 
10
]
 
10
 · 45H
 
2
O
7.12.11Corvusite
V
 
7
O
 
20
·nH
 
2
O
7.12.12Simplotite
CaV
 
4
O
 
9
·5H
 
2
O
7.12.13Kyzylkumite
V
 
2
Ti
 
3
O
 
9
7.12.15Berdesinskiite
V
3+
2
TiO
 
5
7.12.16Tivanite
VTiO
 
3
(OH)
7.12.17Mannardite
Ba
 
x
Ti
 
8-2x
V
 
2x
O
 
16
·2-xH
 
2
O
7.12.18Karelianite
V
 
2
O
 
3
7.12.19Coulsonite
FeV
 
2
O
 
4
7.12.20Nolanite
(V,Fe,Fe,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
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

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Schreyerite in the Natural History Museum (London) online catalogue
  • Schreyerite details from Handbook of Mineralogy (PDF)
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    Localities for Schreyerite

    (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.
    Fiji
     
    • Viti Levu
      • Tavua Gold Field
        • Vatukoula
    		16th Australian Geological Convention, Adelaide,
    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.
    Sweden
     
    • Östergötland
      • Finspång
        • Doverstorp ore field
    		No reference listed
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 15th Nov 2009 22:18:46