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Physical Properties of Skutterudite
Cleavage:
{100} Distinct, {111} Distinct
Color:
White, Light steel gray.
Density:
6.1 - 6.9, Average = 6.5
Diaphaneity:
Opaque
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Colloform - Forming from a gel or colloidal mass.
Habit:
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Habit:
Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:
5.5-6 - Knife Blade-Orthoclase
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Nonmagnetic
Streak:
black
Optical Properties of Skutterudite
RL Color:
Gray, creamy or golden white.
RL Pleochroism:
None.
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
Relative Intensity
0%
20%
40%
60%
80%
100%
120%
140%
160%
170%
R
Calculated Properties of Skutterudite
Electron Density:
Bulk Density (Electron Density)=5.31 gm/cc note: Specific Gravity of Skutterudite =5.95 gm/cc.
Fermion Index:
Fermion Index = 0.0006734977 Boson Index = 0.9993265023
Photoelectric:
PESkutterudite = 64.18 barns/electron U=PESkutterudite x rElectron Density= 340.49 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Skutterudite is Not Radioactive
Skutterudite Classification
Dana Class:
02.12.17.01(02)Sulfides - Including Selenides and Tellurides
Chemical Formula: 
