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Forms:
( 0 1 0) ( 1 1 0) ( 1 0 0) ( 0 0 1)
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Massive - Uniformly indistinguishable crystals forming large masses.
Habit:
Nodular - Tuberose forms having irregular protuberances over the surface.
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
3.5 - Copper Penny
Luminescence:
Fluorescent and phosphorescent, Short UV=yellow-white, Long UV=yellow-white.
Luster:
Vitreous - Greasy
Streak:
white
Optical Properties of Burkeite
Gladstone-Dale:
CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1848,KPDmeas= 0.1855,KC= 0.187 Ncalc = 1.48
Optical Data:
Biaxial (-), a=1.448, b=1.489, g=1.493, bire=0.0450, 2V(Calc)=32, 2V(Meas)=34. Dispersion r > v distinct.
Pleochroism (x):
colorless.
Pleochroism (y):
colorless.
Calculated Properties of Burkeite
Electron Density:
Bulk Density (Electron Density)=2.53 gm/cc note: Specific Gravity of Burkeite =2.57 gm/cc.
Fermion Index:
Fermion Index = 0.0017883428 Boson Index = 0.9982116572
Photoelectric:
PEBurkeite = 1.59 barns/electron U=PEBurkeite x rElectron Density= 4.03 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Burkeite is Not Radioactive
Chemical Formula: 
