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Physical Properties of Thomsonite-Sr
Cleavage:
{100} Perfect, {010} Good
Color:
Colorless.
Density:
2.47
Diaphaneity:
Transparent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:
5 - Apatite
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Thomsonite-Sr
Gladstone-Dale:
CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2036,KPDmeas= 0.2159,KC= 0.2158 Ncalc = 1.53 - 1.57
Optical Data:
Biaxial (+), a=1.528, b=1.532, g=1.54, bire=0.0120, 2V(Calc)=72, 2V(Meas)=62. Dispersion weak, r > v.
Calculated Properties of Thomsonite-Sr
Electron Density:
Bulk Density (Electron Density)=2.45 gm/cc note: Specific Gravity of Thomsonite-Sr =2.47 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PEThomsonite-Sr = 16.12 barns/electron U=PEThomsonite-Sr x rElectron Density= 39.44 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Thomsonite-Sr is Not Radioactive
Chemical Formula: 
