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Malinovskii Y A , Belov N V , Doklady Akademii Nauk SSSR , 252 (1980) p.611-615, Crystal structure of kalborsite
Physical Properties of Kalborsite
Cleavage:
{110} Perfect
Color:
Brownish pink, Colorless.
Density:
2.5
Diaphaneity:
Transparent
Habit:
Epitaxial - Crystallographic alignment with a precursor mineral
Hardness:
6 - Orthoclase
Luster:
Vitreous - Pearly
Streak:
white
Optical Properties of Kalborsite
Gladstone-Dale:
CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2027,KPDmeas= 0.21,KC= 0.2087 Ncalc = 1.52 - 1.54
Optical Data:
Uniaxial (+), w=1.525, e=1.525, bire=0.0000.
Calculated Properties of Kalborsite
Electron Density:
Bulk Density (Electron Density)=2.48 gm/cc note: Specific Gravity of Kalborsite =2.50 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PEKalborsite = 3.61 barns/electron U=PEKalborsite x relectron= 8.93 barns/cc.
Radioactivity:
GRapi = 338.72 (Gamma Ray American Petroleum Institute Units)
Concentration of Kalborsite per GRapi unit = 0.30 (%)
Estimated Radioactivity from Kalborsite - barely detectable