Brittle - Generally displayed by glasses and most non-metallic minerals.
Hardness:
4-5 - Fluorite-Apatite
Luster:
Vitreous (Glassy)
Streak:
brown
Optical Properties of Kuranakhite
Gladstone-Dale:
CI meas= 0.263 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.263 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1456,KPDmeas= 0.1456,KC= 0.1977 Ncalc = 2.33
Optical Data:
Biaxial (?), a=1.952, g=2.002, bire=0.0500
RL Anisotrophism:
Distinct, blue to brown.
RL Bireflectance:
Weak, distinct in oil, with rose tints.
RL Color:
Light gray with a bluish tine with no internal reflections.
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Kuranakhite in Air
λ
R
∑ R(λ)
470 nm
24.40
546 nm
24.00
589 nm
24.50
650 nm
23.00
Calculated Relative Intensity Colors of Kuranakhite in Air
Relative Intensity
0%
40%
80%
100%
120%
160%
200%
240%
280%
320%
360%
370%
R
Calculated Properties of Kuranakhite
Electron Density:
Bulk Density (Electron Density)=5.72 gm/cc note: Specific Gravity of Kuranakhite =6.71 gm/cc.
Fermion Index:
Fermion Index = 0.11 Boson Index = 0.89
Photoelectric:
PEKuranakhite = 866.16 barns/electron U=PEKuranakhite x rElectron Density=4,953.62 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kuranakhite is Not Radioactive
Chemical Formula: 
