AM_Simpsonite
Formula:
Ta3 Al4 O14 H
Name:
Simpsonite
Unit cell:
7.381 7.381 4.516 90.0 90.0 120.0 , V=213.07
Space group:
P113 (1)
Ercit T S , Cerny P , Hawthorne F C , The Canadian Mineralogist , 30 (1992) p.663-671, The crystal chemistry of simpsonite