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Blakeite

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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
Mg(ZnFe)
 
2
(TeO
 
3
)
 
6
·9H
 
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
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
28.3.12Winstanleyite
TiTe
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
28.3.23Mackayite
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 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.

Internet Links for Blakeite

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    • Localities for Blakeite

    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.
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
    		Lapis 2001(1), 11-40
    USA
     
    • Nevada
      • Esmeralda Co.
        • Goldfield District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
    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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