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Physical Properties of Cuprospinel
Cleavage:
None
Color:
Black.
Density:
5 - 5.2, Average = 5.09
Diaphaneity:
Opaque
Habit:
Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Hardness:
6.5-7 - Pyrite-Quartz
Luster:
Metallic
Streak:
black
Optical Properties of Cuprospinel
Optical Data:
NCalc= 2.44 - from Gladstone-Dale relationship (KC = 0.2784) where Ncalc=Dcalc*KC+1 NCalc= 2.42 - from Gladstone-Dale relationship (KC = 0.2784) where Ncalc=Dmeas*KC+1
RL Color:
Gray.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cuprospinel in Air
λ
R
∑ R(λ)
470 nm
22.70
546 nm
21.70
589 nm
21.00
650 nm
20.00
Calculated Relative Intensity Colors of Cuprospinel in Air
Relative Intensity
0%
50%
100%
150%
200%
250%
300%
350%
400%
430%
R
Calculated Properties of Cuprospinel
Electron Density:
Bulk Density (Electron Density)=4.92 gm/cc note: Specific Gravity of Cuprospinel =5.19 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PECuprospinel = 24.54 barns/electron U=PECuprospinel x rElectron Density= 120.65 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Cuprospinel is Not Radioactive
Chemical Formula: 
