| Coulsonite Mineral Data |
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- 7.2.4.1 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m
- 7.2.4.2 Coulsonite FeV2O4 F d3m 4/m 3 2/m
- 7.2.4.3 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m
- IV/B.04-05 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m
- IV/B.04-10 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m
- IV/B.04-20 Coulsonite FeV2O4 F d3m 4/m 3 2/m
- IV/B.04-30 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m
- IV/B.04-40 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m
- IV/B.04-50 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m
General Coulsonite Information |
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 Chemical Formula: |
Fe++V+++2O4 | ||
| Composition: |
Molecular Weight = 221.73 gm | ||
| Vanadium 45.95 % V 67.60 % V2O3 | |||
| Iron 25.19 % Fe 32.40 % FeO | |||
| Oxygen 28.86 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Fe2+V3+2O4 | ||
| IMA Status: |
Valid Species (Pre-IMA) 1937 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 28962 | ||
| PDF 15-122 | |||
Search for Coulsonite Images | |||
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Images:
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Coulsonite Crystallography |
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| Cell Dimensions: |
a = 8.297, Z = 8; V = 571.17 Den(Calc)= 5.16 | ||
| Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.5(1), 2.07(0.8), 2.93(0.6), | ||
Physical Properties of Coulsonite |
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| Color: |
Blue gray. | ||
| Density: |
5.17 - 5.2, Average = 5.18 | ||
| Diaphaniety: |
Opaque | ||
| Hardness: |
4.5-5 - Near Apatite | ||
| Luster: |
Metallic | ||
| Streak: |
black brown | ||
Optical Properties of Coulsonite |
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| Optical Data: |
NCalc= 2.29 - from Gladstone-Dale relationship (KC = 0.2495) where Ncalc=Dcalc*KC+1 NCalc= 2.29 - from Gladstone-Dale relationship (KC = 0.2495) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Coulsonite |
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| Electron Density: |
relectron=4.84 gm/cc |
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| Fermion Index |
Fermion Index = 0.00662 Boson Index = 0.99338 |
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| Photoelectric: |
PECoulsonite = 16.72 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Coulsonite is Not Radioactive |
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Coulsonite Classification |
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| Dana Class: |
7.2.4.2 (7)Multiple Oxides | ||
| (7.2)(A+ B++)2 X4 Spinel group | |||
| (7.2.4)(Vanadium subgroup) | |||
| Strunz Class: |
IV/B.04-20 IV - Oxides | ||
| IV/B - Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related), V/Ti/Ge-Spinels | |||
| IV/B.04 - Spinel group, Vuorelainenite - Brunogeierite series | |||
Other Coulsonite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Coulsonite : 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 Search for Coulsonite using: Visit our Advertisers for Coulsonite : Translate Coulsonite Mineral Data : Ask about Coulsonite here : Print or Cut-and-Paste your Coulsonite Specimen Label here :
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