General Information:
Chemical Formula:(Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2
IMA Status:Approved IMA 1974
Physical Properties:
Cleavage:[001] Perfect
Color:yellow brown.
Density:3.3
Diaphaniety:Transparent to Translucent
Hardness:2.5-3 - Finger Nail-Calcite
Luster:Vitreous (Glassy)
Streak:yellow white
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