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Winstanleyite

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Grand Central Mine, Contention-Grand Central Mine group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA
© Vincent Bourgoin

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Formula:
TiTe
4+
3
O
 
8
System:IsometricColour:Yellow, tan, ...
Hardness:4
Name:Named after Betty Jo Winstanley Williams, amateur mineralogist of Douglas, Arizona (USA) who collected the first specimens.
This page provides mineralogical data about Winstanleyite.

Classification of Winstanleyite

IMA status:Approved 1979
Strunz 8th edition ID:4/K.14-10
Nickel-Strunz 10th (pending) edition ID:4.JK.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
Dana 8th edition ID:34.5.2.1

34 : SELENITES, TELLURITES AND SULFITES
5 : A(X3O8)
Hey's CIM Ref.:28.3.12

28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites
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Type Occurrence of Winstanleyite

Type Locality:Grand Central Mine, Contention-Grand Central Mine group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA
Place of Conservation of Type Material:Harvard University, Boston Massachusetts 119095
Year of Discovery:1979
Geological Setting of type material:Altered dump material.

Physical Properties of Winstanleyite

Lustre:Adamantine, Greasy
Diaphaneity (Transparency):Translucent
Colour:Yellow, tan, cream-colored.
Streak:Light yellow
Hardness (Mohs):4
Tenacity:Brittle
Comment:Brittle, but tough.
Density (measured):5.57(4) g/cm3
Density (calculated):5.63 g/cm3

Crystallography of Winstanleyite

Crystal System:Isometric
Class (H-M):m3 (2/m 3) - Diploidal
Space Group:Ia3 {I21/a 3}
Cell Parameters:a = 10.963Å
Unit Cell Volume:V 1,317.61 ų (Calculated from Unit Cell)
Z:8
Morphology:Cubes, modified by octahedrons.

Optical Data of Winstanleyite

Type:Isotropic
RI values: n = 2.34(2)
Maximum Birefringence:δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:Very High

Chemical Properties of Winstanleyite

Formula:
TiTe
4+
3
O
 
8
Essential elements:O, Te, Ti
All elements listed in formula:O, Te, Ti
Empirical Formula:
Ti
4+
 
Te
4+
3
O
 
8
Common Impurities:Fe

Relationship of Winstanleyite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JK.05Walfordite
(Fe
3+
 
,Te
6+
 
)Te
4+
3
O
 
8
4.JK.10Spiroffite
(Mn,Zn)
 
2
Te
4+
3
O
 
8
4.JK.10Zincospiroffite
Zn
 
2
Te
4+
3
O
 
8
4.JK.15Balyakinite
Cu(TeO
 
3
)
4.JK.20Rajite
Cu(Te
4+
2
O
 
5
)
4.JK.25Carlfriesite
CaTe
4+
2
Te
6+
 
O
 
8
4.JK.30Denningite
(Mn
2+
 
,Ca,Zn)Te
4+
2
O
 
5
4.JK.35Chekhovichite
Bi
 
2
Te
4+
4
O
 
11
4.JK.40Smirnite
Bi
 
2
Te
4+
 
O
 
5
4.JK.45Choloalite
(Cu,Sb)
 
3
(Pb,Ca)
 
3
(TeO
 
3
)
 
6
Cl
4.JK.50Fairbankite
Pb(TeO
 
3
)
4.JK.55Plumbotellurite
Pb(TeO
 
3
)
4.JK.60Magnolite
(Hg
+
2
)(Te
4+
 
O
 
3
)
4.JK.65Moctezumite
Pb(UO
 
2
)(TeO
 
3
)
 
2
4.JK.70Schmitterite
(UO
 
2
)(TeO
 
3
)
4.JK.75Cliffordite
(UO
 
2
)Te
4+
3
O
 
7
Related Minerals - Hey's Index Grouping:

- +
28.3.1Balyakinite
Cu(TeO
 
3
)
28.3.2Rajite
Cu(Te
4+
2
O
 
5
)
28.3.3Graemite
Cu[TeO
 
3
] · H
 
2
O
28.3.4Teineite
Cu[TeO
 
3
] · 2H
 
2
O
28.3.5Cesbronite
Cu
 
5
(TeO
 
3
)
 
2
(OH)
 
6
 · 2H
 
2
O
28.3.6Mroseite
CaTe
4+
 
(CO
 
3
)O
 
2
28.3.7Quetzalcoatlite
Zn
 
6
Cu
 
3
(TeO
 
6
)
 
2
(OH)
 
6
 · Ag
 
x
Pb
 
y
Cl
 
x+2y
28.3.8Zemannite
Mg(ZnFe)
 
2
(TeO
 
3
)
 
6
·9H
 
2
O
28.3.9Kinichilite
(Fe,Mg,Zn)
 
2
(TeO
 
3
)
 
3
(Na
 
x
H
 
2-x
) · 3H
 
2
O
28.3.10Denningite
(Mn
2+
 
,Ca,Zn)Te
4+
2
O
 
5
28.3.11Spiroffite
(Mn,Zn)
 
2
Te
4+
3
O
 
8
28.3.13Fairbankite
Pb(TeO
 
3
)
28.3.14Plumbotellurite
Pb(TeO
 
3
)
28.3.15Choloalite
(Cu,Sb)
 
3
(Pb,Ca)
 
3
(TeO
 
3
)
 
6
Cl
28.3.16Smirnite
Bi
 
2
Te
4+
 
O
 
5
28.3.17Chekhovichite
Bi
 
2
Te
4+
4
O
 
11
28.3.18Cliffordite
(UO
 
2
)Te
4+
3
O
 
7
28.3.19Schmitterite
(UO
 
2
)(TeO
 
3
)
28.3.20Moctezumite
Pb(UO
 
2
)(TeO
 
3
)
 
2
28.3.21Emmonsite
Fe
3+
2
[TeO
 
3
]
 
3
 · 2H
 
2
O
28.3.22Blakeite
Fe
3+
2
[TeO
 
3
]
 
3
 (?)
28.3.23Mackayite
Fe
3+
 
(Te
4+
2
O
 
5
)(OH)
28.3.24Poughite
Fe
3+
2
(TeO
 
3
)
 
2
(SO
 
4
) · 3H
 
2
O
28.3.25Sonoraite
Fe
3+
 
(TeO
 
3
)(OH) · H
 
2
O
28.3.26Rodalquilarite
H
 
3
Fe
 
2
(TeO
 
3
)
 
4
Cl
28.3.27Eztlite
Pb
 
2
Fe
3+
6
(Te
4+
 
O
 
3
)
 
3
(Te
6+
 
O
 
6
)(OH)
 
10
 · 8H
 
2
O
28.3.28Keystoneite
(Ni,Mg,Fe,Mn)
 
3
Te
 
3
O
 
9
 · 5H
 
2
O

Other Names for Winstanleyite

Synonyms:
IMA1979-001
Other Languages:
German:Winstanleyit
Russian:Уинстанлейит
Spanish:Winstanleyita

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 Winstanleyite

Reference List:

- +
Williams, S.A. (1979): Girdite, oboyerite, fairbankite, and winstanleyite, four new tellurium minerals from Tombstone, AZ. Mineralogical Magazine, 43, 453-457.

American Mineralogist (1980): 65: 809.

Canadian Mineralogist (2000): 38: 1261-1268.

Acta Crystallographica: B27: 602-608.

Bindi, Luca and Curzio Cipriani (2004),
The crystal structure of winstanleyite, TiTe3O8, from the Grand Central mine, Tombstone, Arizona, Canadian Mineralogist: 41: 1469-1473.

Internet Links for Winstanleyite

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Winstanleyite details from Handbook of Mineralogy (PDF)
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    • Localities for Winstanleyite

    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.
    Hide Locality List
    (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.
    Chile
     
    • Coquimbo Region
      • Elqui Province
        • El Indio deposit
    		M.Dini collectioni - analysed with EDX, PDf & microprobe (by dr. Jochen Schluter)
    http://www.lrz-muenchen.de/~mineralogische-sammlungen-dmg/analysen/winstanleyit.htm
    USA
     
    • Arizona
      • Cochise Co.
        • Tombstone Hills
          • Tombstone District
            • Contention-Grand Central Mine group
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 421; Williams, S.A. (1979), Girdite, oboyerite, fairbankite, and winstanleyite, four new tellurium minerals from Tombstone, AZ, Min.Mag.: 43: 453-457.
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