Mineralogy Database

Skutterudite Mineral Data

Search Webmineral :

General Skutterudite Information

Help on Chemical  Formula: Chemical Formula: (Co,Ni)As3-x
Help on Composition: Composition: Molecular Weight = 246.18 gm
   Cobalt   17.95 %  Co
   Nickel    5.96 %  Ni
   Arsenic  76.09 %  As
           100.00 % 
Help on Empirical Formula: Empirical Formula: Co0.75Ni0.25As2.5
Help on Environment: Environment: Hydrothermal ore mineral found in high temperature veins with other Ni-Co minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1845
Help on Locality: Locality: Skutterud, Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality. Smaltite In reference to smalt, a deep blue glaze in which this mineral was used to furnish the necessary cobalt.
Help on Name Pronunciation: Name Pronunciation: Skutterudite + Pronunciation Say SKUTTERUDITE
Help on Synonym: Synonym: ICSD 9188
  PDF 10-328

Skutterudite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Erythrite   Skutterudite

Comments: Erythrite crystal on massive skutterudite.
Location: Bou Azzer, Morocco. Scale: Crystal size 1.5 cm.
© John Veevaert

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Cubic crystals of Skutterudite on matrix.
Location: Bou Azzer, Anti-Atlas Mountains, Morrocco. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Bright, untarnished, metallic crystals of skutterudite up to 1 cm.
Location: Bou Azzer, Morocco. Scale: Picture size 3 cm.
© Sandro Maggia/Minernet.it

Skutterudite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 8.19, Z = 8; V = 549.35 Den(Calc)= 5.95
Help on Crystal System: Crystal System: Isometric - Diploidal H-M Symbol (2/m 3) Space Group: I m3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.592(1), 1.835(0.35), 2.193(0.35),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 1 1) ( 1 0 0)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Skutterudite

Help on Cleavage: Cleavage: {100} Distinct, {111} Distinct
Help on Color: Color: White, Light steel gray.
Help on Density: Density: 6.1 - 6.9, Average = 6.5
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Colloform - Forming from a gel or colloidal mass.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 5.5-6 - Knife Blade-Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: black

Optical Properties of Skutterudite

Help on RL Color: RL Color: Gray, creamy or golden white.
Help on RL Pleochroism: RL Pleochroism: None.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Skutterudite in Air
λ R  ∑ R(λ) 
 400 nm   59.10   
 420 nm   57.80 
 440 nm   56.50 
 460 nm   55.60 
 480 nm   55.00 
 500 nm   54.50 
 520 nm   54.20 
 540 nm   54.00 
 560 nm   53.80 
 580 nm   53.60 
 600 nm   53.50 
 620 nm   53.20 
 640 nm   53.00 
 660 nm   52.90 
 680 nm   52.80 
 700 nm   52.70 
Calculated Relative Intensity Colors of Skutterudite in Air
   0%   20%   40%   60%   80% 100% 120% 140% 160% 170%

Calculated Properties of Skutterudite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.31 gm/cc
note: Specific Gravity of Skutterudite =5.95 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0006734977
Boson Index = 0.9993265023
Help on Photoelectric: Photoelectric: PESkutterudite = 64.18 barns/electron
U=PESkutterudite x rElectron Density= 340.49 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Skutterudite is Not Radioactive

Skutterudite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.12)where Am Bn Xp, with (m+n):p=1:2
  (02.12.17)Skutterudite Series Skutterudite (Co,Ni)As3-x I m3 2/m 3 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3 Kieftite CoSb3 I m3 2/m 3 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3
Help on  Strunz Class: Strunz Class: 02.EC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.E - Metal Sulfides, M:S � 1:2
  02.EC -M:S = 1:>2
02.EC.05 Dienerite? Ni3As I 43d 4 3m
02.EC.05 Kieftite CoSb3 I m3 2/m 3
02.EC.05 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3
02.EC.05 Skutterudite (Co,Ni)As3-x I m3 2/m 3
02.EC.05 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3

Other Skutterudite Information

Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Skutterudite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - Scandinavian mineral gallery
19 - theimage

Search for Skutterudite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Skutterudite :

Ask about Skutterudite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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


Dana No: Strunz No: 02.EC.05





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.