Lavenite

General Information:
 Chemical Formula:
(Na,Ca)2(Mn,Fe++)(Zr,Ti)Si2O7(O,OH,F)
Physical Properties:
 Color:
colorless, light yellow, dark yellow, brown, or brownish red.
 Density:
3.51 - 3.547, Average = 3.52
 Diaphaniety:
Translucent
 Hardness:
6 - Orthoclase
 Luster:
Vitreous - Dull
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