General Information:
Chemical Formula:
(Mg,Fe++)2(PO4)F
Composition:
(Molecular Weight = 170.47 gm)
Magnesium 24.95 % Mg
Iron 8.19 % Fe
Phosphorus 18.17 % P
Oxygen 37.54 % O
Fluorine 11.15 % F
Empirical Formula:
Mg1.75Fe2+0.25(PO4)F
Physical Properties:
Cleavage:
[???] Imperfect
Color:
greenish, gray white, grayish, yellow, or reddish brown.
Density:
3.07 - 3.14, Average = 3.1
Diaphaniety:
Translucent
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
Hardness:
5-5.5 - Apatite-Knife Blade
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
More details...