General Information:
Chemical Formula:(Ca,Na)(Mg,Fe++,Fe+++,Al)Si2O6
IMA Status:Approved IMA 1987
Physical Properties:
Cleavage:[110] Good
Color:grass green or dark green.
Density:3.29 - 3.39, Average = 3.34
Diaphaniety:Translucent
Hardness:5-6 - Between Apatite and Orthoclase
Luster:Vitreous - Silky
Streak:greenish white
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