Skutterudite Mineral Data (original) (raw)
General Skutterudite Information
(Co,Ni)As3-x
Molecular Weight = 246.18 gm
Cobalt 17.95 % Co
Nickel 5.96 % Ni
Arsenic 76.09 % As
______
100.00 %
Co0.75Ni0.25As2.5
Hydrothermal ore mineral found in high temperature veins with other Ni-Co minerals.
Valid Species (Pre-IMA) 1845
Skutterud, Norway. Link to MinDat.org Location Data.
Named after its locality. Smaltite In reference to smalt, a deep blue glaze in which this mineral was used to furnish the necessary cobalt.
ICSD 9188
PDF 10-328
Smaltite
Skutterudite Image
Skutterudite Crystallography
a = 8.19, Z = 8; V = 549.35 Den(Calc)= 5.95
Isometric - DiploidalH-M Symbol (2/m 3) Space Group: I m3
By Intensity(I/Io): 2.592(1), 1.835(0.35), 2.193(0.35),
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| | Mandel N , Donohue J , Acta Crystallographica, Section B , 27 (1971) p.2288-2289, The refinement of the crystal structure of skutterudite, CoAs3, Locality: Bou-Azzer, Morocco | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Skutterudite
{100} Distinct, {111} Distinct
White, Light steel gray.
6.1 - 6.9, Average = 6.5
Opaque
Brittle - Generally displayed by glasses and most non-metallic minerals.
Colloform - Forming from a gel or colloidal mass.
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Massive - Uniformly indistinguishable crystals forming large masses.
5.5-6 - Knife Blade-Orthoclase
Non-fluorescent.
Metallic
Nonmagnetic
black
Optical Properties of Skutterudite
Gray, creamy or golden white.
None.
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
RelativeIntensity | 0% | 20% | 40% | 60% | 80% | 100% | 120% | 140% | 160% | 170% |
---|---|---|---|---|---|---|---|---|---|---|
R |
Calculated Properties of Skutterudite
Bulk Density (Electron Density)=5.31 gm/cc
note: Specific Gravity of Skutterudite =5.95 gm/cc.
Fermion Index = 0.0006734977
Boson Index = 0.9993265023
PESkutterudite = 64.18 barns/electron
U=PESkutterudite x rElectron Density= 340.49 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Skutterudite is Not Radioactive
Skutterudite Classification
02.12.17.01 (02)Sulfides - Including Selenides and Tellurides
(02.12)where Am Bn Xp, with (m+n):p=1:2
(02.12.17)Skutterudite Series
02.12.17.01 Skutterudite (Co,Ni)As3-x I m3 2/m 3
02.12.17.02 Nickelskutterudite (Ni,Co)As3-x I m3 2/m 3
02.12.17.03 Kieftite CoSb3 I m3 2/m 3
02.12.17.04 Ferroskutterudite! (Fe,Co)As3 Im3 2/m 3
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
NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
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
18 - WWW-MINCRYST
19 - theimage
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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 Espa�ol
Print or Cut-and-Paste your Skutterudite Specimen Label here :
Skutterudite
(Co,Ni)As3-x
Dana No: 02.12.17.01 Strunz No: 02.EC.05
Locality:
Notes: