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Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Habit:
Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Habit:
Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:
3-3.5 - Calcite-Copper Penny
Luminescence:
Fluorescent, Short UV=yellow, white blue, Long UV=yellow, white blue.
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Celestine
Gladstone-Dale:
CI meas= 0.004 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1575,KPDmeas= 0.1583,KC= 0.1589 Ncalc = 1.62 - 1.64
Optical Data:
Biaxial (+), a=1.621-1.622, b=1.623-1.624, g=1.63-1.632, bire=0.0090-0.0100, 2V(Calc)=54-58, 2V(Meas)=50-51. Dispersion r < v.
Pleochroism (x):
colorless.
Pleochroism (y):
colorless.
Calculated Properties of Celestine
Electron Density:
Bulk Density (Electron Density)=3.70 gm/cc note: Specific Gravity of Celestine =3.95 gm/cc.
Fermion Index:
Fermion Index = 0.03 Boson Index = 0.97
Photoelectric:
PECelestine = 54.93 barns/electron U=PECelestine x rElectron Density= 203.17 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Celestine is Not Radioactive
Chemical Formula: 
