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Physical Properties of Cobaltite
Cleavage:
{100} Good, {010} Good, {001} Good
Color:
Reddish silver white, Violet steel gray, Black.
Density:
6.33
Diaphaneity:
Opaque
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Habit:
Striated - Parallel lines on crystal surface or cleavage face.
Hardness:
5.5 - Knife Blade
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Magnetic after heating
Streak:
grayish black
Optical Properties of Cobaltite
RL Pleochroism:
Very weak.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cobaltite in Air
λ
R
∑ R(λ)
400 nm
48.20
420 nm
48.60
440 nm
49.00
460 nm
48.60
480 nm
48.30
500 nm
48.70
520 nm
49.40
540 nm
50.30
560 nm
51.20
580 nm
52.30
600 nm
53.20
620 nm
54.10
640 nm
54.80
660 nm
55.20
680 nm
55.40
700 nm
55.30
Calculated Relative Intensity Colors of Cobaltite in Air
Relative Intensity
0%
20%
40%
60%
80%
100%
120%
140%
160%
180%
190%
R
Calculated Properties of Cobaltite
Electron Density:
Bulk Density (Electron Density)=5.82 gm/cc note: Specific Gravity of Cobaltite =6.35 gm/cc.
Fermion Index:
Fermion Index = 0.0014494566 Boson Index = 0.9985505434
Photoelectric:
PECobaltite = 45.56 barns/electron U=PECobaltite x rElectron Density= 265.02 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Cobaltite is Not Radioactive
Cobaltite Classification
Dana Class:
02.12.03.01(02)Sulfides - Including Selenides and Tellurides