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Denningite

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Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
© 2008 Jesse Crawford

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Formula:
(Mn
2+
 
,Ca,Zn)Te
4+
2
O
 
5
System:TetragonalHardness:4


The structure of denningite contains chains of (MnO6) and (CaO8) polyhedra, which are cross-linked into a framework by Te4+ cations. A similar motif is found in the structure of spiroffite group minerals, where Te4+ cations are cross-linking sheets of (M2O10) polyhedra.

Classification of Denningite

IMA status:Approved
Strunz 8th edition ID:4/K.12-20
Nickel-Strunz 10th (pending) edition ID:4.JK.30

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:34.4.1.1

34 : SELENITES, TELLURITES AND SULFITES
4 : A(X2O5)
Hey's CIM Ref.:28.3.10

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

Type Locality:Moctezuma Mine (Bambolla Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico
Year of Discovery:1961

Physical Properties of Denningite

Hardness (Mohs):4

Crystallography of Denningite

Crystal System:Tetragonal
Cell Parameters:a = 8.82Å, c = 13.04Å
Ratio:a:c = 1 : 1.478
Unit Cell Volume:V 1,014.41 ų (Calculated from Unit Cell)

Optical Data of Denningite

Type:Uniaxial (+)
RI values: nω = 1.890 nε = 2.000
Maximum Birefringence:δ = 0.110

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Denningite

Formula:
(Mn
2+
 
,Ca,Zn)Te
4+
2
O
 
5
Essential elements:Mn, O, Te
All elements listed in formula:Ca, Mn, O, Te, Zn
Common Impurities:Ca

Relationship of Denningite to other Species

Structurally related to group(s):
Spiroffite Group
M
 
2
Te
4+
3
O
 
8
Related Minerals - Nickel-Strunz Grouping):

- +
4.JK.05Winstanleyite
TiTe
4+
3
O
 
8
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.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
28.3.11Spiroffite
(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
28.3.22Blakeite
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 Denningite

Other Languages:
German:Denningit
Russian:Денингит
Spanish:Denningita

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 Denningite

Reference List:

- +
J. A. Mandarino, S. J. Williams, and R. S. Mitchell (1963): Denningite, a new tellurite mineral from Moctezuma, Sonoro, Mexico. Can. Mineral. 7, 443-452.

American Mineralogist: 47: 1481.

American Mineralogist: 48: 1419.

Canadian Mineralogist: 7: 443-452.

Tschermaks Mineralogische und Petrographische Mitteilungen: 10: 241-255.

Internet Links for Denningite

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    • Localities for Denningite

    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.
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    (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.
    Belgium
     
    • Luxembourg Province
      • Stavelot Massif
        • Vielsalm
    		http://perso.infonie.be/jose.dehove/photos/Salmchateau.htm
    Mexico
     
    • Sonora
      • Mun. de Moctezuma
        • Moctezuma
    		Can.Min.(1962) 7, 340-341
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    Updated Mineral Entry: BuseckiteFrom Bela Feher, 12th Feb 2012 19:38:37