General Information:
Chemical Formula:
K(V,Al,Mg)2AlSi3O10(OH)2
Locality:
Stuckslacker mine, 2 miles SW of Coloma, El Dorado Co., California.
Physical Properties:
Cleavage:
[???] Perfect
Color:
brown green, greenish brown, yellow green, dark brown, or dark green.
Density:
2.97
Diaphaniety:
Translucent
Habits:
Micaceous - Platy texture with "flexible" plates., ,
Hardness:
2.5 - Finger Nail
Luminescence:
Non-fluorescent.
Luster:
Pearly
Streak:
greenish white
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