Dickinsonite

General Information:
 Chemical Formula:
(K,Ba)(Na,Ca)5(Mn++,Fe++,Mg)14Al(PO4)12(OH,F)2
Physical Properties:
 Cleavage:
[???] Perfect
 Color:
brownish green, green, or yellow green.
 Density:
3.34
 Diaphaniety:
Transparent to Translucent
 Habits:
Foliated - Two dimensional platy forms., Micaceous - Platy texture with "flexible" plates.,
 Hardness:
3.5-4 - Copper Penny-Flourite
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous - Pearly
 Streak:
white
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