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Walfordite

Big Photo

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

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
 
3
O
 
8
4.JK.10Spiroffite
(Mn,Zn)
 
2
Te
 
3
O
 
8
4.JK.10Zincospiroffite
Zn
 
2
[Te
 
3
O
 
8
]
4.JK.15Balyakinite
CuTeO
 
3
4.JK.20Rajite
Cu[Te
4+
2
O
 
5
]
4.JK.25Carlfriesite
CaTe
 
3
O
 
8
4.JK.30Denningite
(Mn
2+
 
,Ca,Zn)[Te
4+
2
O
 
5
]
4.JK.35Chekhovichite
Bi
 
2
Te
 
4
O
 
11
4.JK.40Smirnite
(BiO)
 
2
[TeO
 
3
]
4.JK.45Choloalite
PbCu[TeO
 
3
]
 
2
 · H
 
2
O
4.JK.50Fairbankite
PbTeO
 
3
4.JK.55Plumbotellurite
PbTeO
 
3
4.JK.60Magnolite
Hg
 
2
TeO
 
3
4.JK.65Moctezumite
PbUO
 
2
(TeO
 
3
)
 
2
4.JK.70Schmitterite
(UO
 
2
)[TeO
 
3
]
4.JK.75Cliffordite
UTe
 
3
O
 
9

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:Canadian Mineralogist (1999): 37: 1261-1268.

Acta Crystallographica: B27: 602-607.

Internet Links for Walfordite

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

    (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
    		[AmMin 85:1324]
    Mineral and/or Locality
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