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Physical Properties of Zinkenite
Cleavage:
{1120} Imperfect
Color:
Gray, Steel gray.
Density:
5.12 - 5.35, Average = 5.23
Diaphaneity:
Opaque
Fracture:
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habit:
Acicular - Occurs as needle-like crystals.
Habit:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Habit:
Striated - Parallel lines on crystal surface or cleavage face.
Hardness:
3-3.5 - Calcite-Copper Penny
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Nonmagnetic
Streak:
steel gray
Optical Properties of Zinkenite
RL Anisotrophism:
Distinct.
RL Color:
Gray-white.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Zinkenite in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
400 nm
39.10
44.20
420 nm
39.20
44.40
440 nm
39.30
44.60
460 nm
39.20
44.50
480 nm
39.00
44.20
500 nm
38.80
43.80
520 nm
38.40
43.20
540 nm
37.90
42.50
560 nm
37.30
41.80
580 nm
36.70
41.00
600 nm
36.00
40.40
620 nm
35.40
39.80
640 nm
34.60
39.00
660 nm
34.00
38.20
680 nm
33.20
37.30
700 nm
32.40
36.30
Calculated Relative Intensity Colors of Zinkenite in Air
Relative Intensity
0%
30%
60%
90%
100%
120%
150%
180%
210%
240%
250%
R1
R2
Calculated Properties of Zinkenite
Electron Density:
Bulk Density (Electron Density)=4.63 gm/cc note: Specific Gravity of Zinkenite =5.38 gm/cc.
Fermion Index:
Fermion Index = 0.07 Boson Index = 0.93
Photoelectric:
PEZinkenite = 722.21 barns/electron U=PEZinkenite x rElectron Density=3,340.56 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Zinkenite is Not Radioactive
Chemical Formula: 
