Monteponite Mineral Data

Monteponite Mineral Data +

General Monteponite Information

Chemical Formula:

CdO

Composition:

Molecular Weight = 128.41 gm

Cadmium 87.54 % Cd 100.00 % CdO

Oxygen 12.46 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CdO

Environment:

Coating on calamine crystals.

IMA Status:

Valid Species (Pre-IMA) 1946

Locality:

Monte Poni, near Iglesias, Cagliari, Sadinia. Link to MinDat.org Location Data.

Synonym:

Cadmium oxide

ICSD 29289

PDF 5-640

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Monteponite Crystallography

Cell Dimensions:

a = 4.689, Z = 4; V = 103.10 Den(Calc)= 8.27

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.712(1), 2.349(0.88), 1.661(0.43),

Crystal Structure:

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Zhang J , Physics and Chemistry of Minerals , 26 (1999) p.644-648, Room temperature compressibilities of MnO and CdO: further, examination of the role of cation type in bulk modulus systematics, Sample from Run #1: P = 0.00 GPa at beginning of experiment

View Additional jPOWD Structure files for Monteponite
[1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [3] [4] [5] [6] [7] [8] [9]

Physical Properties of Monteponite

Cleavage:

[???] Indistinct

Color:

Black.

Density:

8.1 - 8.2, Average = 8.14

Diaphaniety:

Opaque

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Hardness:

3 - Calcite

Luster:

Metallic

Streak:

black

Optical Properties of Monteponite

Optical Data:

NCalc= 2.08 - from Gladstone-Dale relationship (KC = 0.13) where Ncalc=Dcalc*KC+1
NCalc= 2.06 - from Gladstone-Dale relationship (KC = 0.13) where Ncalc=Dmeas*KC+1

Calculated Properties of Monteponite

Electron Density:

r_electron=7.21 gm/cc
note: r_Monteponite=8.27 gm/cc.

Fermion Index

Fermion Index = 0.21917
Boson Index = 0.78083

Photoelectric:

PE_Monteponite= 241.87 barns/electron
U=PE_Monteponite x r_electron=1,744.61 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Monteponite is Not Radioactive

Monteponite Classification

Dana Class:

4.2.1.4 (4)Simple Oxides

(4.2)with a cation charge of 2+ (A++ O)

(4.2.1)Periclase group (Isometric, Fm3m)

4.2.1.1 Periclase MgO F m3m 4/m 3 2/m

4.2.1.2 Bunsenite NiO F m3m 4/m 3 2/m

4.2.1.3 Manganosite MnO F m3m 4/m 3 2/m

4.2.1.4 Monteponite CdO F m3m 4/m 3 2/m

4.2.1.5 Lime CaO F m3m 4/m 3 2/m

4.2.1.6 Wustite FeO F m3m 4/m 3 2/m

4.2.1.7 Hongquiite* TiO F m3m 4/m 3 2/m

Strunz Class:

IV/A.04-50 IV - Oxides

IV/A - Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO)

IV/A.04 - Periclase Group, Periclase - Murdochite series

IV/A.04-10 Periclase MgO F m3m 4/m 3 2/m

IV/A.04-20 Wustite FeO F m3m 4/m 3 2/m

IV/A.04-30 Bunsenite NiO F m3m 4/m 3 2/m

IV/A.04-40 Manganosite MnO F m3m 4/m 3 2/m

IV/A.04-50 Monteponite CdO F m3m 4/m 3 2/m

IV/A.04-60 Lime CaO F m3m 4/m 3 2/m

IV/A.04-70 Murdochite PbCu6O8-x(Cl,Br)2x F m3m 4/m 3 2/m

Other Monteponite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Monteponite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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Monteponite

CdO
Dana No: 4.2.1.4 Strunz No: IV/A.04-50
Locality:

Notes: