General Information:
Chemical Formula:Na(Pb,Na,K)2(Ta,Nb,Ti)4As+++4O18
Environment:In a kaolinized pegmatite.
IMA Status:Approved IMA 1984
Locality:St. Ann's mine, Karoi district, SE of Miami, Zimbabwe.
Name Origin:Named for the country of origin.
Physical Properties: Cleavage:[010] Perfect
Color:yellow brown or honey yellow.
Density:6.2
Diaphaniety:Translucent
Habits:Euhedral Crystals - Occurs as well-formed crystals showing good external form., Tabular - Form dimensions are thin in one direction.,
Hardness:5-5.5 - Apatite-Knife Blade
Luminescence:Non-fluorescent.
Luster:Adamantine
Streak:white
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