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Shadlunite Mineral Data

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General Shadlunite Information

Help on Chemical  Formula: Chemical Formula: (Pb,Cd)(Fe,Cu)8S8
Help on Composition: Composition: Molecular Weight = 902.20 gm
   Cadmium   3.11 %  Cd
   Iron     37.14 %  Fe
   Copper   14.09 %  Cu
   Lead     17.22 %  Pb
   Sulfur   28.43 %  S
           ______ 
           100.00 % 
Help on Empirical Formula: Empirical Formula: Pb0.75Cd0.25Fe2+6Cu2S8
Help on Environment: Environment: As tiny grains and veinlets cutting Cu-Ni ores.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: Majak (Mayak) and Oktyaber mines, Talnakh area, Noril'sk, western Siberia, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Tatanya Shadlun, Russian researcher on ore minerals.
Help on Name Pronunciation: Name Pronunciation: Shadlunite + Pronunciation Say SHADLUNITE
 

Shadlunite Image

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  Shadlunite

Comments: BSE polished section image of shadlunite inclusions (SHD) with galena (GN) in chalcopyrite (CP).
Location: Majak (Mayak) and Oktyaber mines, Talnakh area, Noril'sk, western Siberia, Russia. Scale: Picture Size 150 µm.
© Jeff Weissman / Photographic Guide to Mineral Species

Shadlunite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.91, Z = 4; V = 1,298.60 Den(Calc)= 4.61
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): 3.29(1), 1.925(0.9), 3.84(0.4),
 

Physical Properties of Shadlunite

Help on Color: Color: Bronze.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Twinning Common - Crystals are usually twinned.
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Metallic
 

Optical Properties of Shadlunite

Help on RL Anisotrophism: RL Anisotrophism: Weak.
Help on RL Color: RL Color: Grayish yellow.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Shadlunite in Air
λ R  ∑ R(λ) 
 440 nm   18.00   
 460 nm   19.50 
 480 nm   20.80 
 500 nm   22.00 
 520 nm   23.40 
 540 nm   24.50 
 560 nm   25.80 
 580 nm   26.90 
 600 nm   27.70 
 620 nm   28.70 
 640 nm   29.30 
 660 nm   30.20 
 680 nm   30.80 
 700 nm   31.20 
Calculated Relative Intensity Colors of Shadlunite in Air
Relative
Intensity
   0%   50% 100% 150% 200% 250% 300% 350% 400% 450%
R                    
 

Calculated Properties of Shadlunite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.25 gm/cc
note: Specific Gravity of Shadlunite =4.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEShadlunite = 314.94 barns/electron
U=PEShadlunite x rElectron Density=1,337.30 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Shadlunite is Not Radioactive
 

Shadlunite Classification

Help on  Dana Class: Dana Class: 02.07.01.04 (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 Shadlunite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Shadlunite :
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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Shadlunite

(Pb,Cd)(Fe,Cu)8S8
Dana No: 02.07.01.04 Strunz No: 02.BB.15a
Locality:

 

Notes:

 

 
   
 


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