Capillary - Very slender and long, like a thread or hair (e.g. millerite).
Habit:
Massive - Granular - Common texture observed in granite and other igneous rock.
Hardness:
3.5-4 - Copper Penny-Fluorite
Luminescence:
Non-fluorescent.
Luster:
Adamantine
Magnetism:
Nonmagnetic
Streak:
brownish red
Optical Properties of Cuprite
Gladstone-Dale:
CI meas= -0.296 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.294 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3028,KPDmeas= 0.3033,KC= 0.234 Ncalc = 2.43
Optical Data:
Isotropic, n=2.85.
RL Color:
Gray blue with internal red reflections.
RL Pleochroism:
Anomalous.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Cuprite in Air
λ
R
∑ R(λ)
400 nm
32.10
420 nm
32.20
440 nm
32.30
460 nm
31.70
480 nm
30.40
500 nm
28.80
520 nm
27.50
540 nm
26.30
560 nm
25.50
580 nm
24.80
600 nm
24.40
620 nm
23.90
640 nm
23.60
660 nm
23.40
680 nm
23.20
700 nm
23.10
Calculated Relative Intensity Colors of Cuprite in Air
Relative Intensity
0%
40%
80%
100%
120%
160%
200%
240%
280%
320%
360%
R
Calculated Properties of Cuprite
Electron Density:
Bulk Density (Electron Density)=5.64 gm/cc note: Specific Gravity of Cuprite =6.11 gm/cc.
Fermion Index:
Fermion Index = 0.00005367 Boson Index = 0.99994633
Photoelectric:
PECuprite = 40.46 barns/electron U=PECuprite x rElectron Density= 228.05 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Cuprite is Not Radioactive
Chemical Formula: 
