Pentlandite Mineral Data + Say PENTLANDITE


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General Pentlandite Information
Help on Chemical Formula: Chemical Formula: (Fe,Ni)9S8
Help on Composition: Composition: Molecular Weight = 771.94 gm
   Iron    32.56 %  Fe
   Nickel  34.21 %  Ni
   Sulfur  33.23 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: Fe2+4.5Ni4.5S8
Help on Environment: Environment: Common as the sulfide phase in basic and ultra-basic intrusive igneous rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1856
Help on Locality: Locality: Espedalen, near Lillihammer, Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Irish natural historian, J. B. Pentland (1797-1873).
Help on Synonym: Synonym: ICSD 61021
  PDF Aug-90
 

Pentlandite Image

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Pentlandite

Comments: Ore sample of a mixture of several sulfide minerals: pentlandite, chalcopyrite, and pyrrhotite.
Location: Frood-Stobie Mine, Sudbury District, Ontario, Canada. Scale: 20x15x7 mm.
© John Betts - Fine Minerals

Pentlandite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 10.04, Z = 4; V = 1,012.05 Den(Calc)= 5.07
Help on Crystal System: 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/Io): 1.775(1), 3.03(0.8), 1.931(0.5),
Click Here for Large Pentlandite Structure Window Crystal Structure:

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Pearson A D , Buerger M J , American Mineralogist , 41 (1956) p.804-805, Confirmation of the crystal structure of pentlandite.

View Additional jPOWD Structure files for Pentlandite
[1] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [2] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [3] [30] [31] [32] [33] [34] [35] [36] [37] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Pentlandite

Help on Cleavage: Cleavage: None
Help on Color: Color: Bronze, Brown.
Help on Density: Density: 4.6 - 5, Average = 4.8
Help on Diaphaniety: Diaphaniety: Opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luminescence: Luminescence: None.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: greenish black
 

Optical Properties of Pentlandite

Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Pentlandite in Air
λ R  ∑ R(λ) 
 400 nm   30.90   
 420 nm   34.80 
 440 nm   38.70 
 460 nm   41.80 
 480 nm   44.20 
 500 nm   46.30 
 520 nm   47.90 
 540 nm   49.20 
 560 nm   50.40 
 580 nm   51.10 
 600 nm   52.30 
 620 nm   53.10 
 640 nm   53.80 
 660 nm   54.50 
 680 nm   55.00 
 700 nm   55.60 
Calculated Relative Intensity Colors of Pentlandite in Air
Relative
Intensity		    0%   30%   60%   90% 100% 120% 150% 180% 210% 230%
R                    
 

Calculated Properties of Pentlandite

Help on Electron Density: Electron Density:

relectron=4.87 gm/cc
note: rPentlandite =5.07 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01326
Boson Index = 0.98674
Help on Photoelectric: Photoelectric:

PEPentlandite = 25.41 barns/electron
U=PEPentlandite x relectron= 123.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pentlandite is Not Radioactive
 

Pentlandite Classification
Help on Dana Class: Dana Class: 2.7.1.1 (2)Sulfides - Including Selenides and Tellurides
  (2.7)where Am Bn Xp, with (m+n):p=9:8
  (2.7.1)Pentalndite Group (Isometric: Fm3m)
 
2.7.1.1 Pentlandite (Fe,Ni)9S8 F m3m 4/m 3 2/m
 
2.7.1.2 Argentopentlandite Ag(Fe,Ni)8S8 F m3m 4/m 3 2/m
 
2.7.1.3 Cobaltpentlandite Co9S8 F m3m 4/m 3 2/m
 
2.7.1.4 Shadlunite (Pb,Cd)(Fe,Cu)8S8 F m3m 4/m 3 2/m
 
2.7.1.5 Manganese-shadlunite (Mn,Pb)(Cu,Fe)8S8 F m3m 4/m 3 2/m
 
2.7.1.6 Geffroyite (Ag,Cu,Fe)9(Se,S)8 F m3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: II/B.16-10 II - Sulfides and sulphosalts
  II/B - Sulfides with metal: sulfur, selenium and tellurium > 1:1, Sulfides with predominant Nickel, Cobalt, Rhodium and Palladium
  II/B.16 - Pentlandite group
 
II/B.16-10 Pentlandite (Fe,Ni)9S8 F m3m 4/m 3 2/m
 
II/B.16-20 Cobaltpentlandite Co9S8 F m3m 4/m 3 2/m
 
II/B.16-30 Argentopentlandite Ag(Fe,Ni)8S8 F m3m 4/m 3 2/m
 
II/B.16-40 Geffroyite (Ag,Cu,Fe)9(Se,S)8 F m3m 4/m 3 2/m
 
II/B.16-50 Manganese-shadlunite (Mn,Pb)(Cu,Fe)8S8 F m3m 4/m 3 2/m
 
II/B.16-60 Shadlunite (Pb,Cd)(Fe,Cu)8S8 F m3m 4/m 3 2/m
 
II/B.16-70 Palladseite Pd17Se15 P m3m 4/m 3 2/m
 
II/B.16-80 Miassite! Rh17S15 P m3m 4/m 3 2/m
 
II/B.16-80* Prassoite! Rh17S15(?) P m3m 4/m 3 2/m
 

Other Pentlandite Information
Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Pentlandite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Scandinavian mineral gallery
17 - WWW-MINCRYST

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Pentlandite

(Fe,Ni)9S8
Dana No: 2.7.1.1 Strunz No: II/B.16-10
Locality:

 

Notes:

 
 
   
 
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