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Nickelskutterudite

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Formula:
NiAs3-x
Also given as NiAs2-3.
System:
Isometric
Colour:
Tin white - silver grey
Hardness:
5½ - 6
Name:
As the nickel member of skutterudite series.

Classification of Nickelskutterudite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.EC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
C : M:S = 1:>2
2.12.17.2

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.11.30

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
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First Recorded Occurrence of Nickelskutterudite

Year of Discovery:
1845

Physical Properties of Nickelskutterudite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Tin white - silver grey
Comment:
Tarnising gray to iridescent
Streak:
Black
Hardness (Mohs):
5½ - 6
Cleavage:
Distinct/Good
Distinct on {001}{111}, traces on {011}
Fracture:
Irregular/Uneven, Conchoidal
Density:
6.5 g/cm3 (Measured)    5.97(90) g/cm3 (Calculated)

Crystallography of Nickelskutterudite

Crystal System:
Isometric
Class (H-M):
m3 (2/m 3) - Diploidal
Space Group:
Im3
Cell Parameters:
a = 8.17Å
Unit Cell Volume:
V 545.34 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Cubes, octahedrons and dodecahedron
Twinning:
On {112} as sixlings

Optical Data of Nickelskutterudite

Type:
Isotropic
Anisotropism:
Weak to distict
Colour in reflected light:
Light yellowish white, anisotropic zones reddish

Chemical Properties of Nickelskutterudite

Formula:
NiAs3-x

Also given as NiAs2-3.
Essential elements:
All elements listed in formula:
Common Impurities:
Fe,Bi,S

Relationship of Nickelskutterudite to other Species

Series:
Forms a series with Skutterudite (see here)
Other Members of Group:
3.11.1HeazlewooditeNi3S2
3.11.2Godlevskite(Ni,Fe)9S8
3.11.3MilleriteNiS
3.11.4PolydymiteNi2+Ni23+S4
3.11.5VaesiteNiS2
3.11.6ShanditeNi3Pb2S2
3.11.7DonharrisiteNi8Hg3S9
3.11.8ViolariteFe2+Ni23+S4
3.11.9Pentlandite(Fe,Ni)9S8
3.11.10Bravoite(Fe,Ni)S2
3.11.11SiegeniteCoNi2S4
3.11.12FletcheriteCu(Ni,Co)2S4
3.11.13Villamaninite(Cu,Ni,Co,Fe)S2
3.11.14Mäkineniteγ-NiSe
3.11.15Sederholmitebeta-NiSe
3.11.16TrüstedtiteNi3Se4
3.11.17WilkmaniteNi3Se4
3.11.18KulleruditeNiSe2
3.11.19Penroseite(Ni,Co,Cu)Se2
3.11.20TyrrelliteCu(Co3+,Ni3+)2Se4
3.11.21ImgreiteNiTe (?)
3.11.22MeloniteNiTe2
3.11.23KitkaiteNiTeSe
3.11.24Dienerite
3.11.25OrceliteNi5-xAs2, x ~ 0.25
3.11.26MaucheriteNi11As8
3.11.27NickelineNiAs
3.11.28RammelsbergiteNiAs2
3.11.29PararammelsbergiteNiAs2
3.11.31OregoniteNi2FeAs2
3.11.32Westerveldite(Fe,Ni,Co)As
3.11.33Langisite(Co,Ni)As
3.11.34GersdorffiteNiAsS
3.11.35JolliffeiteNiAsSe
3.11.36BreithauptiteNiSb
3.11.38UllmanniteNiSbS
3.11.39Willyamite(Co,Ni)SbS

Other Names for Nickelskutterudite

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Nickelskutterudite

Reference List:
Waller and Moses (1892), Sch. Mines Q.: 14: 49.

American Mineralogist (1943): 28: 63.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 342-347.

Internet Links for Nickelskutterudite

Localities for Nickelskutterudite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
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