Aggregates - Made of numerous individual crystals or clusters.
Habit:
Powdery - Forms a loose, poorly-coherent pulverulent mass.
Habit:
Very Soluble - Material dissolves readily in water leaving no residue.
Hardness:
1-1.5 - Talc or a little harder
Streak:
white
Optical Properties of Dorfmanite
Gladstone-Dale:
CI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.092 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2044,KPDmeas= 0.231,KC= 0.2252 Ncalc = 1.45 - 1.51
Optical Data:
Biaxial (+), a=1.454, b=1.461, g=1.471, bire=0.0170, 2V(Calc)=82, 2V(Meas)=65. Dispersion very weak, r > v.
Calculated Properties of Dorfmanite
Electron Density:
Bulk Density (Electron Density)=2.02 gm/cc note: Specific Gravity of Dorfmanite =2.00 gm/cc.
Fermion Index:
Fermion Index = 0.0002631293 Boson Index = 0.9997368707
Photoelectric:
PEDorfmanite = 1.29 barns/electron U=PEDorfmanite x rElectron Density= 2.62 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Dorfmanite is Not Radioactive