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Physical Properties of Stannite
Cleavage:
{110} Imperfect
Color:
Blue, Grayish black, Steel gray.
Density:
4.3 - 4.5, Average = 4.4
Diaphaneity:
Opaque
Fracture:
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habit:
Crystalline - Fine - Occurs as well-formed fine sized crystals.
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Hardness:
3.5-4 - Copper Penny-Fluorite
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Nonmagnetic
Streak:
black
Optical Properties of Stannite
RL Anisotrophism:
Distinct , in violet and slate-green.
RL Color:
Gray with olive-green tint.
RL Pleochroism:
Indistinct in air, distinct in oil.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Stannite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
400 nm
18.50
20.40
420 nm
20.00
22.00
440 nm
21.50
23.60
460 nm
23.00
24.90
480 nm
24.30
26.00
500 nm
25.50
27.10
520 nm
26.50
28.00
540 nm
27.40
28.60
560 nm
28.00
29.00
580 nm
28.60
29.40
600 nm
28.80
29.50
620 nm
29.00
29.50
640 nm
28.80
29.20
660 nm
28.20
28.60
680 nm
27.60
27.80
700 nm
26.40
26.80
Calculated Relative Intensity Colors of Stannite in Air
Relative Intensity
0%
50%
100%
150%
200%
250%
300%
350%
400%
R1
R2
Calculated Properties of Stannite
Electron Density:
Bulk Density (Electron Density)=4.12 gm/cc note: Specific Gravity of Stannite =4.47 gm/cc.
Fermion Index:
Fermion Index = 0.05 Boson Index = 0.95
Photoelectric:
PEStannite = 101.81 barns/electron U=PEStannite x rElectron Density= 419.18 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Stannite is Not Radioactive
Stannite Classification
Dana Class:
02.09.02.01(02)Sulfides - Including Selenides and Tellurides
Chemical Formula: 
