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Physical Properties of Nickeline
Cleavage:
{1010} Imperfect, {0001} Imperfect
Color:
Lead gray, Grayish, Copper, Black.
Density:
7.78 - 7.8, Average = 7.79
Diaphaneity:
Opaque
Fracture:
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Habit:
Columnar - Forms columns
Habit:
Massive - Uniformly indistinguishable crystals forming large masses.
Habit:
Reniform - "Kidney like" in shape (e.g.. hematite).
Hardness:
5.5 - Knife Blade
Luminescence:
Non-fluorescent.
Luster:
Metallic
Magnetism:
Nonmagnetic
Streak:
brownish black
Optical Properties of Nickeline
RL Anisotrophism:
Very strong, light greenish yellow to slate-gray in air.
RL Color:
White with strong yellowish pink hue.
RL Pleochroism:
High, whitish, yellow-pink, to light brownish pink.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Nickeline in Air
λ
R1
R2
∑ R1(λ)
∑ R2(λ)
400 nm
41.40
48.20
420 nm
40.60
47.10
440 nm
39.40
46.00
460 nm
39.00
45.50
480 nm
39.50
46.20
500 nm
41.30
47.70
520 nm
43.80
49.50
540 nm
47.00
51.60
560 nm
50.50
53.80
580 nm
53.50
56.00
600 nm
56.00
57.80
620 nm
58.20
59.70
640 nm
60.00
60.90
660 nm
61.40
62.00
680 nm
62.30
62.80
700 nm
62.80
63.20
Calculated Relative Intensity Colors of Nickeline in Air
Relative Intensity
0%
30%
60%
90%
100%
120%
150%
180%
210%
220%
R1
R2
Calculated Properties of Nickeline
Electron Density:
Bulk Density (Electron Density)=7.16 gm/cc note: Specific Gravity of Nickeline =7.84 gm/cc.
Fermion Index:
Fermion Index = 0.0049636184 Boson Index = 0.9950363816
Photoelectric:
PENickeline = 58.21 barns/electron U=PENickeline x rElectron Density= 416.69 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Nickeline is Not Radioactive
Nickeline Classification
Dana Class:
02.08.11.01(02)Sulfides - Including Selenides and Tellurides
Chemical Formula: 
