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Physical Properties of Tschermigite
Cleavage:
{100} Perfect
Color:
White, Colorless.
Density:
1.65
Diaphaneity:
Transparent to translucent
Fracture:
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Habit:
Crystalline - Coarse - Occurs as well-formed coarse sized crystals.
Habit:
Deliquescent - Crystals absorb water from the air and melt or otherwise deteriorate.
Habit:
Fibrous - Crystals made up of fibers.
Hardness:
1.5-2 - Talc-Gypsum
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Magnetism:
Nonmagnetic
Streak:
white
Optical Properties of Tschermigite
Gladstone-Dale:
CI meas= -0.122 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.122 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2782,KPDmeas= 0.2782,KC= 0.2479 Ncalc = 1.41
Optical Data:
Isotropic, n=1.459.
Calculated Properties of Tschermigite
Electron Density:
Bulk Density (Electron Density)=1.75 gm/cc note: Specific Gravity of Tschermigite =1.65 gm/cc.
Fermion Index:
Fermion Index = 0.03 Boson Index = 0.97
Photoelectric:
PETschermigite = 1.16 barns/electron U=PETschermigite x rElectron Density= 2.03 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tschermigite is Not Radioactive
Chemical Formula: 
