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Monteponite

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Monteponi Mine, Iglesias, Carbonia-Iglesias Province, Sardinia, Italy
© Knut Eldjarn

Show Monteponite Photos (7)
Formula:
CdO
System:IsometricColour:Yellow-brown, red-brown, ...
Hardness:3
Name:
After the locality at the Monteponi Mine, Iglesias, Iglesiente District, Sardinia, Italy
This page provides mineralogical data about Monteponite.

Classification of Monteponite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/A.04-50
Nickel-Strunz 10th (pending) edition ID:4.AB.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
A : Metal: Oxygen = 2:1 and 1:1
B : M:O = 1:1 (and up to 1:1.25); with small to medium-sized cations only
Dana 8th edition ID:4.2.1.4

4 : SIMPLE OXIDES
2 : AX
Hey's CIM Ref.:7.5.11

7 : Oxides and Hydroxides
5 : Oxides of Zn, Cd and Hg
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Type Occurrence of Monteponite

Type Locality:Monteponi Mine, Iglesias, Carbonia-Iglesias Province, Sardinia, Italy
Year of Discovery:1946

Physical Properties of Monteponite

Diaphaneity (Transparency):Transparent
Colour:Yellow-brown, red-brown, brown-black, black (lustrous)
Hardness (Mohs):3
Cleavage:Distinct/Good
{111} (?) (artificial crystals)
Density (measured):8.1 - 8.2 g/cm3
Density (calculated):8.21 g/cm3

Crystallography of Monteponite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Fm3m {F4/m 3 2/m}
Cell Parameters:a = 4.69Å
Unit Cell Volume:V 103.16 ų (Calculated from Unit Cell)
Morphology:Octahedral, sometimes with modifying cube. Pulverulent.
Twinning:Penetration twins observed (law unknown).

Chemical Properties of Monteponite

Formula:
CdO
Essential elements:Cd, O
All elements listed in formula:Cd, O

Relationship of Monteponite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.AB.05Crednerite
CuMnO
 
2
4.AB.10Tenorite
CuO
4.AB.15Delafossite
CuFeO
 
2
4.AB.15Mcconnellite
CuCrO
 
2
4.AB.20Bromellite
BeO
4.AB.20Zincite
(Zn,Mn
2+
 
,Fe
2+
 
)O
4.AB.25Bunsenite
NiO
4.AB.25Lime
CaO
4.AB.25Manganosite
MnO
4.AB.25Periclase
MgO
4.AB.25Wüstite
FeO
4.AB.30Palladinite
PdO
Related Minerals - Hey's Index Grouping:

- +
7.5.1Zincite
(Zn,Mn
2+
 
,Fe
2+
 
)O
7.5.2Sweetite
Zn(OH)
 
2
7.5.3Ashoverite
Zn(OH)
 
2
7.5.4Wülfingite
Zn(OH)
 
2
7.5.5Gahnite
ZnAl
 
2
O
 
4
7.5.6Hetaerolite
ZnMn
 
2
O
 
4
7.5.7Hydrohetaerolite
ZnMn
 
2
O
 
4
·H
 
2
O
7.5.8Chalcophanite
(Zn,Fe,Mn)Mn
 
3
O
 
7
·3H
 
2
O
7.5.9Woodruffite
Zn(Mn
4+
 
,Mn
3+
 
)
 
5
O
 
10
·3½H
 
2
O
7.5.10Franklinite
Zn
2+
 
Fe
3+
2
O
 
4
7.5.12Montroydite
HgO

Other Names for Monteponite

Synonyms:
Genaruttite
Other Languages:
German:Genaruttit
Monteponit
Russian:Монтепонит
Spanish:Genaruttita
Monteponita

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 Monteponite

Reference List:Ksanda (1931), American Journal of Science: 22: 131.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume I: 502-503 (as Cadmium Oxide).

Forti P., Perna G. (1988): Genesi della Monteponite di Monteponi (CA) - Rivista Min. Italiana, Milano, fasc. 1, pp. 45-49.

Internet Links for Monteponite

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    Localities for Monteponite

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