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Newnham R E , American Mineralogist , 52 (1967) p.1515-1518, Crystal structure and optical properties of pollucite
View Additional jPOWD Structure files for Pollucite
[1]
Physical Properties of Pollucite
Cleavage:
None
Color:
Colorless, White, Gray, Pale pink, Blue.
Density:
2.9
Diaphaneity:
Transparent
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:
6.5 - Pyrite
Luminescence:
Fluorescent, Short UV=cream white blue green, Long UV=weak orange.
Luster:
Vitreous - Dull
Magnetism:
Nonmagnetic
Streak:
white
Optical Properties of Pollucite
Gladstone-Dale:
CI meas= 0.046 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1757,KPDmeas= 0.1793,KC= 0.188 Ncalc = 1.55 - 1.56
Optical Data:
Isotropic, n=1.52.
Calculated Properties of Pollucite
Electron Density:
Bulk Density (Electron Density)=2.76 gm/cc note: Specific Gravity of Pollucite =2.90 gm/cc.
Fermion Index:
Fermion Index = 0.0098528604 Boson Index = 0.9901471396
Photoelectric:
PEPollucite = 114.28 barns/electron U=PEPollucite x relectron= 315.74 barns/cc.
Radioactivity:
GRapi = 484.85 (Gamma Ray American Petroleum Institute Units)
Concentration of Pollucite per GRapi unit = 0.21 (%)
Estimated Radioactivity from Pollucite - barely detectable