Universalium. 2010.

First known was 1804.

Chemistry: Ca10( Mg, Fe) 2Al4( SiO4) 5( Si2O7) 2( OH) 4, Calcium Magnesium Iron Aluminum Silicate Hydroxide.
Class: Silicates
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Additional information Idocrase in determining the pricing structure and color.
by Ricky Chang on January 16, 2012 at 22: 38

http: / / www.gemval.com/ chart.php? type= 54
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