Molybdite Mineral Data + 
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- 4.5.1.1 Molybdite MoO3 Pbnm 2/m 2/m 2/m
- IV/E.03-10 Molybdite MoO3 Pbnm 2/m 2/m 2/m
- IV/E.03-20 Sidwillite MoO3·2(H2O) P 21/n 2/m
- IV/E.03-30 Ilsemannite Mo3O8·n(H2O)(?) None
- IV/E.03-40 Bamfordite! FeMo2O6(OH)3·(H2O) P1 or P1 Tri
General Molybdite Information |
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 Chemical Formula: |
MoO3 | ||
| Composition: |
Molecular Weight = 143.94 gm | ||
| Molybdenum 66.65 % Mo 100.00 % MoO3 | |||
| Oxygen 33.35 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
MoO3 | ||
| IMA Status: |
Approved IMA 1963 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 35076 | ||
| PDF 35-609 | |||
Molybdite Image | |||
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Images:
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Molybdite Crystallography |
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| Axial Ratios: |
a:b:c =0.2863:1:0.2672 | ||
| Cell Dimensions: |
a = 3.954, b = 13.808, c = 3.69, Z = 4; V = 201.46 Den(Calc)= 4.75 | ||
| Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbnm | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.25(1), 3.8(1), 3.45(0.9), | ||
Physical Properties of Molybdite |
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| Cleavage: |
[100] Perfect, [001] Distinct | ||
| Color: |
Colorless, Greenish yellow, Light greenish yellow. | ||
| Density: |
4.72 | ||
| Diaphaniety: |
Transparent | ||
| Hardness: |
3-4 - Calcite-Fluorite | ||
| Luster: |
Adamantine | ||
| Streak: |
white | ||
Optical Properties of Molybdite |
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| Optical Data: |
NCalc= 2.13 - from Gladstone-Dale relationship (KC = 0.237) where Ncalc=Dcalc*KC+1 NCalc= 2.12 - from Gladstone-Dale relationship (KC = 0.237) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Molybdite |
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| Electron Density: |
relectron=4.36 gm/cc |
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| Fermion Index |
Fermion Index = 0.16992 Boson Index = 0.83008 |
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| Photoelectric: |
PEMolybdite = 111.17 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Molybdite is Not Radioactive |
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Molybdite Classification |
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| Dana Class: |
4.5.1.1 (4)Simple Oxides | ||
| (4.5)with a cation charge of 6+ (A++++++ O3) | |||
| (4.5.1)Dana Group | |||
| Strunz Class: |
IV/E.03-10 IV - Oxides | ||
| IV/E - Oxides with metal : oxygen < 1:2 (M2O5, MO3) | |||
| IV/E.03 - Molybdite - Ilsemannite series | |||
Other Molybdite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Molybdite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - Scandinavian mineral gallery 14 - WWW-MINCRYST 15 -École des Mines de Paris Search for Molybdite using: Visit our Advertisers for Molybdite : Translate Molybdite Mineral Data : Ask about Molybdite here : Print or Cut-and-Paste your Molybdite Specimen Label here :
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