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Blakeite

Formula:
Fe
3+
2
[TeO
 
3
]
 
3
 (?)
Colour:Brown or dark reddish ...Lustre:Dull
Hardness:2 - 3
Name:For William Phipps Blake (b.1826), American geologist and mineralogist.
This page provides mineralogical data about Blakeite.

Classification of Blakeite

IMA status:Questionable/Doubtful 1944
Strunz 8th edition ID:4/K.09-10
Nickel-Strunz 10th (pending) edition ID:4.JM.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
M : Tellurites without additional anions, with H2O
Hey's CIM Ref.:28.3.22

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

Type Locality:Mohawk Mine, Goldfield District, Esmeralda Co., Nevada, USA
General Appearance of Type Material:Massive; micro-crystalline crusts.
Geological Setting of type material:Oxidized zone of Au-Te deposit.
Associated Minerals at type locality:
TelluriumPyriteMackayiteEmmonsite

Physical Properties of Blakeite

Lustre:Dull
Colour:Brown or dark reddish brown; golden yellow to yellowish brown and brown in transmitted light.
Streak:Yellowish brown
Hardness (Mohs):2 - 3
Tenacity:Fragile
Comment:Greater than 3.1

Crystallography of Blakeite

Morphology:Micro-crystalline crusts, massive.

Optical Data of Blakeite

Type:Isotropic

Chemical Properties of Blakeite

Formula:
Fe
3+
2
[TeO
 
3
]
 
3
 (?)
Essential elements:Fe, O, Te
All elements listed in formula:Fe, O, Te

Relationship of Blakeite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.JM.05Keystoneite
(Ni,Mg,Fe,Mn)
 
3
Te
 
3
O
 
9
·5H
 
2
O
4.JM.05Kinichilite
(Fe,Mg,Zn)
 
2
(TeO
 
3
)
 
3
(Na
 
x
H
 
2-x
)·3H
 
2
O
4.JM.05Zemannite
(H,Na)
 
2
(Zn,Fe)
 
2
(TeO
 
3
)
 
3
·nH
 
2
O
4.JM.10Emmonsite
Fe
3+
2
[TeO
 
3
]
 
3
 · 2H
 
2
O
4.JM.15Graemite
Cu[TeO
 
3
] · H
 
2
O
4.JM.20Teineite
Cu[TeO
 
3
] · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
28.3.1Balyakinite
CuTeO
 
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
[(OH)
 
3
|TeO
 
3
]
 
2
 · 2H
 
2
O
28.3.6Mroseite
CaTeO
 
2
CO
 
3
28.3.7Quetzalcoatlite
Zn
 
6
Cu
 
3
(TeO
 
6
)
 
2
(OH)
 
6
·Ag
 
x
Pb
 
y
Cl
 
x+2y
28.3.8Zemannite
(H,Na)
 
2
(Zn,Fe)
 
2
(TeO
 
3
)
 
3
·nH
 
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
 
3
O
 
8
28.3.12Winstanleyite
TiTe
 
3
O
 
8
28.3.13Fairbankite
PbTeO
 
3
28.3.14Plumbotellurite
PbTeO
 
3
28.3.15Choloalite
PbCu[TeO
 
3
]
 
2
 · H
 
2
O
28.3.16Smirnite
(BiO)
 
2
[TeO
 
3
]
28.3.17Chekhovichite
Bi
 
2
Te
 
4
O
 
11
28.3.18Cliffordite
UTe
 
3
O
 
9
28.3.19Schmitterite
(UO
 
2
)[TeO
 
3
]
28.3.20Moctezumite
PbUO
 
2
(TeO
 
3
)
 
2
28.3.21Emmonsite
Fe
3+
2
[TeO
 
3
]
 
3
 · 2H
 
2
O
28.3.23Mackayite
Fe
3+
 
[OH|Te
4+
2
O
 
5
]
28.3.24Poughite
Fe
3+
2
[SO
 
4
|(TeO
 
3
)
 
2
] · 3H
 
2
O
28.3.25Sonoraite
Fe
3+
 
[OH|TeO
 
3
] · H
 
2
O
28.3.26Rodalquilarite
H
 
3
Fe
 
2
(TeO
 
3
)
 
4
Cl
28.3.27Eztlite
Pb
 
2
Fe
3+
6
[(OH)
 
10
|(Te
4+
 
O
 
3
)
 
3
|Te
6+
 
O
 
6
] · 8H
 
2
O
28.3.28Keystoneite
(Ni,Mg,Fe,Mn)
 
3
Te
 
3
O
 
9
·5H
 
2
O

Other Names for Blakeite

Other Languages:
German:Blakeit
Spanish:Blakeita

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 Blakeite

Reference List:Frondel, C. & F.H. Pough (1944), Two new tellurites of iron: Mackayite and blakeite, with new data on emmonsite and durdenite, American Mineralogist: 29: 211-225.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 643.

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    Localities for Blakeite

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