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Physical Properties of Smithsonite
Cleavage:
{1011} Perfect, {1011} Perfect, 1011 Perfect
Color:
Grayish white, Dark gray, Green, Blue, Yellow.
Density:
4.4 - 4.5, Average = 4.45
Diaphaneity:
Subtransparent to translucent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Habit:
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Habit:
Reniform - "Kidney like" in shape (e.g.. hematite).
Hardness:
4.5 - Between Fluorite and Apatite
Luminescence:
Fluorescent, Long UV=gray pale yellow.
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Smithsonite
Dichroism (e):
colorless.
Dichroism (w):
colorless.
Gladstone-Dale:
CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1665,KPDmeas= 0.1657,KC= 0.1766 Ncalc = 1.78 - 1.79
Optical Data:
Uniaxial (-), e=1.625, w=1.85, bire=0.2250.
Calculated Properties of Smithsonite
Electron Density:
Bulk Density (Electron Density)=4.24 gm/cc note: Specific Gravity of Smithsonite =4.43 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PESmithsonite = 26.17 barns/electron U=PESmithsonite x rElectron Density= 110.94 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Smithsonite is Not Radioactive
Chemical Formula: 
