Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Habit:
Encrustations - Forms crust-like aggregates on matrix.
Hardness:
5 - Apatite
Luster:
Vitreous - Dull
Streak:
blue white
Optical Properties of Planerite
Gladstone-Dale:
CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.223,KPDmeas= 0.2239,KC= 0.2266 Ncalc = 1.61
Optical Data:
Biaxial (?), b=1.6
Calculated Properties of Planerite
Electron Density:
Bulk Density (Electron Density)=2.71 gm/cc note: Specific Gravity of Planerite =2.68 gm/cc.
Fermion Index:
Fermion Index = 0.0002896002 Boson Index = 0.9997103998
Photoelectric:
PEPlanerite = 1.46 barns/electron U=PEPlanerite x rElectron Density= 3.97 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Planerite is Not Radioactive
Planerite Classification
Dana Class:
42.09.03.06(42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen