Ganophyllite

General Information:
 Chemical Formula:
(K,Na)2(Mn,Al,Mg)8(Si,Al)12O29(OH)7·8-9(H2O)
 Environment:
Metamorphosed manganese deposit.
 Locality:
Harstig mine, Pajsberg, near Persberg, Vermland, Sweden.
Physical Properties:
 Cleavage:
[???] Perfect
 Color:
brownish yellow or cinnamon brown.
 Density:
2.84
 Diaphaniety:
Transparent to translucent
 Habits:
Foliated - Two dimensional platy forms., Micaceous - Platy texture with "flexible" plates.,
 Hardness:
4-4.5 - Between Fluorite and Apatite
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
brownish yellow
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