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Physical Properties of Hambergite
Cleavage:
{010} Perfect, {100} Good
Color:
Colorless, Gray white, Yellowish white, White.
Density:
2.372
Diaphaneity:
Transparent to Translucent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Hardness:
7.5 - Garnet
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Dull
Streak:
white
Optical Properties of Hambergite
Gladstone-Dale:
CI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.04 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.25,KPDmeas= 0.2487,KC= 0.2403 Ncalc = 1.57
Optical Data:
Biaxial (+), a=1.55, b=1.59, g=1.63, bire=0.0800
Pleochroism (x):
colorless.
Pleochroism (y):
colorless.
Pleochroism (z):
colorless.
Calculated Properties of Hambergite
Electron Density:
Bulk Density (Electron Density)=2.33 gm/cc note: Specific Gravity of Hambergite =2.37 gm/cc.
Fermion Index:
Fermion Index = 0.21 Boson Index = 0.79
Photoelectric:
PEHambergite = 0.33 barns/electron U=PEHambergite x rElectron Density= 0.76 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hambergite is Not Radioactive
Hambergite Classification
Dana Class:
25.01.01.01(25)Anhydrous Borates Containing Hydroxyl or Halogen
Chemical Formula: 
