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Coulsonite Mineral Data

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General Coulsonite Information

Help on Chemical  Formula: Chemical Formula: Fe++V+++2O4
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Fe2+V3+2O4
Help on Environment: Environment: Veinlets of magnetite, with silicate minerals, cutting metamorphosed andesite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1937
Help on Locality: Locality: Buena Vista Hills, 32 km southeast of Lovelock, Mineral Basin district, Pershing Co., Nevada, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Arthur Lennox Coulson (1898-?), geologist of the Indian Geological Survey.
Help on Synonym: Synonym: ICSD 28962
  PDF 15-122
 

Coulsonite Image

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  Coulsonite

Comments: Evenly disseminated fine-grained coulsonite in subhedral crystals (light gray) scattered through silicate gangue (dark gray), composed of chlorite, muscovite and scapolite. (AmMin, v47:1284).
Location: Metamorphosed igneous rocks of the Buena Vista Hills located some twenty miles southeast of the town of Lovelock, Nevada, USA. Scale: Picture Size 135 x.
© American Mineralogist

Coulsonite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 8.297, Z = 8; V = 571.17 Den(Calc)= 5.16
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.5(1), 2.07(0.8), 2.93(0.6),
 

Physical Properties of Coulsonite

Help on Color: Color: Blue gray.
Help on Density: Density: 5.17 - 5.2, Average = 5.18
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 4.5-5 - Near Apatite
Help on Luster: Luster: Metallic
Help on Streak: Streak: black brown
 

Optical Properties of Coulsonite

Help on Optical Data: 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
 

Calculated Properties of Coulsonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.84 gm/cc
note: Specific Gravity of Coulsonite =5.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0066269727
Boson Index = 0.9933730273
Help on Photoelectric: Photoelectric: PECoulsonite = 16.72 barns/electron
U=PECoulsonite x rElectron Density= 80.95 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Coulsonite is Not Radioactive
 

Coulsonite Classification

Help on  Dana Class: Dana Class: 07.02.04.02 (07)Multiple Oxides
  (07.02)(A+ B++)2 X4 Spinel group
  (07.02.04)(Vanadium subgroup)
 
07.02.04.01 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m
 
07.02.04.02 Coulsonite FeV2O4 F d3m 4/m 3 2/m
 
07.02.04.03 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 04.BB.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.B - Metal:Oxygen = 3:4 and similar
  04.BB -With only medium-sized cations
 
04.BB.05 Cochromite (Co,Ni,Fe)(Cr,Al)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m
 
04.BB.05 Magnetite FeFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Gahnite ZnAl2O4 F d3m 4/m 3 2/m
 
04.BB.05 Chromite FeCr2O4 F d3m 4/m 3 2/m
 
04.BB.05 Galaxite (Mn,Mg)(Al,Fe)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Cuprospinel (Cu,Mg)Fe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m
 
04.BB.05 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Coulsonite FeV2O4 F d3m 4/m 3 2/m
 
04.BB.05 Hercynite FeAl2O4 F d3m 4/m 3 2/m
 
04.BB.05 Franklinite (Zn,Mn,Fe)(Fe,Mn)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Jacobsite (Mn,Fe,Mg)(Fe,Mn)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Magnesiochromite MgCr2O4 F d3m 4/m 3 2/m
 
04.BB.05 Magnesioferrite MgFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m
 
04.BB.05 Manganochromite (Mn,Fe)(Cr,V)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m
 
04.BB.05 Nichromite (Ni,Co,Fe)(Cr,Fe,Al)2O4 F d3m 4/m 3 2/m
 
04.BB.05 Spinel MgAl2O4 F d3m 4/m 3 2/m
 
04.BB.05 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Zincochromite ZnCr2O4 F d3m 4/m 3 2/m
 
04.BB.05 Trevorite NiFe2O4 F d3m 4/m 3 2/m
 
04.BB.05 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m
 

Other Coulsonite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Coulsonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Print or Cut-and-Paste your Coulsonite Specimen Label here :

Coulsonite

Fe++V+++2O4
Dana No: 07.02.04.02 Strunz No: 04.BB.05
Locality:

 

Notes:

 

 
   
 


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