General Information:
Chemical Formula:Ca0.3(Cr+++,Mg,Fe+++)2(Si,Al)4O10(OH)2·4(H2O)
IMA Status:Approved IMA
Physical Properties:
Cleavage:[???] Perfect
Color:yellow, olive green, or green.
Density:2 - 2.5, Average = 2.25
Diaphaniety:Subopaque
Hardness:1.5-2 - Talc-Gypsum
Luster:Resinous
Streak:blue green
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