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Disseminated - Occurs in small, distinct particles dispersed in matrix.
Habit:
Platy - Sheet forms (e.g. micas).
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
6.5-7 - Pyrite-Quartz
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Pearly
Streak:
white
Optical Properties of Diaspore
Gladstone-Dale:
CI meas= 0.062 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.056 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2142,KPDmeas= 0.2129,KC= 0.227 Ncalc = 1.75 - 1.79
Optical Data:
Biaxial (+), a=1.7-1.702, b=1.72-1.722, g=1.747-1.752, bire=0.0470-0.0500, 2V(Calc)=80-84, 2V(Meas)=80-88. Dispersion weak, r < v.
Pleochroism (x):
colorless or colorless.
Pleochroism (y):
colorless or pale red.
Calculated Properties of Diaspore
Electron Density:
Bulk Density (Electron Density)=3.38 gm/cc note: Specific Gravity of Diaspore =3.38 gm/cc.
Fermion Index:
Fermion Index = 0.0002585608 Boson Index = 0.9997414392
Photoelectric:
PEDiaspore = 1.35 barns/electron U=PEDiaspore x rElectron Density= 4.55 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Diaspore is Not Radioactive
Diaspore Classification
Dana Class:
06.01.01.01(06)Hydroxides and Oxides Containing Hydroxyl
Chemical Formula: 
