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Walfordite

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Big Photo

Wendy open pit, Tambo Mine, El Indio deposit, Elqui Province, Coquimbo Region, Chile
© Brent Thorne

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Formula:
(Fe
3+
 
,Te
6+
 
)Te
4+
3
O
 
8
System:IsometricColour:Orange
Lustre:Adamantine
Name:Named after Phillip Walford (b. 1945), of Toronto, Ontario, Canada, Vice-President and Chief Geologist of LAC Minerals, Ltd., at the time that mining company held the mining rights to the discovery locality.
This page provides mineralogical data about Walfordite.

Classification of Walfordite

IMA status:Approved
Strunz 8th edition ID:4/K.14-05
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
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Type Occurrence of Walfordite

Type Locality:Wendy open pit, Tambo Mine, El Indio deposit, Elqui Province, Coquimbo Region, Chile

Physical Properties of Walfordite

Lustre:Adamantine
Diaphaneity (Transparency):Opaque
Colour:Orange
Streak:Orange-yellow
Tenacity:Brittle

Crystallography of Walfordite

Crystal System:Isometric

Optical Data of Walfordite

Type:Isotropic

Chemical Properties of Walfordite

Formula:
(Fe
3+
 
,Te
6+
 
)Te
4+
3
O
 
8
Essential elements:Fe, O, Te
All elements listed in formula:Fe, O, Te

Relationship of Walfordite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JK.05Winstanleyite
TiTe
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

Other Names for Walfordite

Synonyms:
IMA1996-003
Other Languages:
German:Walfordit
Russian:Уолфордит
Spanish:Walfordita

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 Walfordite

Reference List:

- +
BACK, M.E., GRICE, J.D., GAULT, R.A., CRIDDLE, A.J. & MANDARINO, J.A. (1999): Walfordite, a new tellurite from the Wendy open pit, El Indio - Tambo mining property, Chile. Canadian Mineralogist 38, 1261-1268.
Canadian Mineralogist (1999): 37: 1261-1268.
Acta Crystallographica: B27: 602-607.

Internet Links for Walfordite

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

    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
          • Tambo Mine
    		BACK, M.E., GRICE, J.D., GAULT, R.A., CRIDDLE, A.J. & MANDARINO, J.A. (1999): Walfordite, a new tellurite from the Wendy open pit, El Indio - Tambo mining property, Chile. Canadian Mineralogist 38, 1261-1268.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2012. 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. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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