Mineralogy Database

Cobaltpentlandite Mineral Data

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General Cobaltpentlandite Information

Help on Chemical  Formula: Chemical Formula: Co9S8
Help on Composition: Composition: Molecular Weight = 786.93 gm
   Cobalt  67.40 %  Co
   Sulfur  32.60 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: Co9S8
Help on Environment: Environment: With other sulfides and arsenides in hydrothermal veins.
Help on IMA Status: IMA Status: Approved IMA 1959
Help on Locality: Locality: At the Langis mine, Casey Township, Cobalt-Gowganda area, Ontario, and the Vauze mine, north of Noranda, Quebec Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the cobalt content and the relationship with pentlandite.
Help on Synonym: Synonym: Cobalt pentlandite - Renamed to Cobaltpentlandite by Mineralogical Record, v39 (2008), p131
  ICSD 40046
  PDF 19-364
 

Cobaltpentlandite Image

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  Cobaltpentlandite

Comments: Bronze-yellow cobaltpentlndite in pyrrhotite.
Location: Outokumpu, Finland. Scale: Specimen Size 0.8x1.5 cm.
© Diederik Visser

Cobaltpentlandite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 9.973, Z = 4; V = 991.92 Den(Calc)= 5.27
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.763(1), 3.008(1), 1.918(0.8),
 

Physical Properties of Cobaltpentlandite

Help on Color: Color: Yellow.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Metallic
 

Optical Properties of Cobaltpentlandite

Help on RL Color: RL Color: Slightly lighter bronze yellow than pentlandite.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cobaltpentlandite in Air
λ R  ∑ R(λ) 
 400 nm   36.90   
 420 nm   41.90 
 440 nm   45.90 
 460 nm   49.20 
 480 nm   51.70 
 500 nm   53.80 
 520 nm   55.60 
 540 nm   57.00 
 560 nm   58.20 
 580 nm   59.20 
 600 nm   60.00 
 620 nm   60.50 
 640 nm   61.00 
 660 nm   61.20 
 680 nm   61.40 
 700 nm   61.50 
Calculated Relative Intensity Colors of Cobaltpentlandite in Air
Relative
Intensity
   0%   20%   40%   60%   80% 100% 120% 140% 160% 180% 190%
R                      
 

Calculated Properties of Cobaltpentlandite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.97 gm/cc
note: Specific Gravity of Cobaltpentlandite =5.27 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0024449034
Boson Index = 0.9975550966
Help on Photoelectric: Photoelectric: PECobaltpentlandite = 25.15 barns/electron
U=PECobaltpentlandite x rElectron Density= 124.97 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cobaltpentlandite is Not Radioactive
 

Cobaltpentlandite Classification

Help on  Dana Class: Dana Class: 02.07.01.03 (02)Sulfides - Including Selenides and Tellurides
  (02.07)where Am Bn Xp, with (m+n):p=9:8
  (02.07.01)Pentalndite Group (Isometric: Fm3m)
 
02.07.01.01 Pentlandite (Fe,Ni)9S8 F m3m 4/m 3 2/m
 
02.07.01.02 Argentopentlandite Ag(Fe,Ni)8S8 F m3m 4/m 3 2/m
 
02.07.01.03 Cobaltpentlandite Co9S8 F m3m 4/m 3 2/m
 
02.07.01.04 Shadlunite (Pb,Cd)(Fe,Cu)8S8 F m3m 4/m 3 2/m
 
02.07.01.05 Manganoshadlunite (Mn,Pb)(Cu,Fe)8S8 F m3m 4/m 3 2/m
 
02.07.01.06 Geffroyite (Ag,Cu,Fe)9(Se,S)8 F m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 02.BB.15a 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BB -With Ni, Fe
 
02.BB.15a Argentopentlandite Ag(Fe,Ni)8S8 F m3m 4/m 3 2/m
 
02.BB.15a Cobaltpentlandite Co9S8 F m3m 4/m 3 2/m
 
02.BB.15a Geffroyite (Ag,Cu,Fe)9(Se,S)8 F m3m 4/m 3 2/m
 
02.BB.15a Manganoshadlunite (Mn,Pb)(Cu,Fe)8S8 F m3m 4/m 3 2/m
 
02.BB.15a Pentlandite (Fe,Ni)9S8 F m3m 4/m 3 2/m
 
02.BB.15a Shadlunite (Pb,Cd)(Fe,Cu)8S8 F m3m 4/m 3 2/m
 

Other Cobaltpentlandite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Cobaltpentlandite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Ecole des Mines de Paris
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Cobaltpentlandite

Co9S8
Dana No: 02.07.01.03 Strunz No: 02.BB.15a
Locality:

 

Notes:

 

 
   
 


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