General Information:
Chemical Formula:
Na2Mn++5Fe+++Al(PO4)6
Composition:
(Molecular Weight = 973.33 gm)
Sodium 4.72 % Na
Manganese 28.22 % Mn
Aluminum 2.77 % Al
Iron 5.74 % Fe
Phosphorus 19.09 % P
Oxygen 39.45 % O
Empirical Formula:
Na2Mn2+5Fe3+Al(PO4)6
IMA Status:
Approved IMA 1984
Physical Properties:
Cleavage:
[010] Perfect
Color:
greenish brown or reddish brown.
Density:
3.54
Diaphaniety:
Transparent to Subopaque
Hardness:
4 - Fluorite
Luster:
Resinous
Streak:
yellowish brown
More details...