General Information:
Chemical Formula:
Na11(Na,Ca)4(Mg,Mn)Ti++++4(Si4O12)(PO4)4O5F3
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
[001] Perfect, [110] Distinct
Color:
brown.
Density:
3.03
Hardness:
4.5-5
Luster:
Resinous
Streak:
yellowish brown
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