AM_Chevkinite-(Ce)_4
Formula:
Ce3.686 Ca.14 Fe1.74 Mg.24 Ti2.74 Nb.14 Si4 O22 H1.28
Name:
Chevkinite-(Ce)
Unit cell:
13.456 5.728 11.083 90.0 100.6 90.0 , V=839.66
Space group:
C12/M1 (12)
Yang Z , Fleck M , Smith M , Tao K , Song R , Zhang P , European Journal of Mineralogy , 14 (2002) p.969-975, The crystal structure of natural Fe-rich chevkinite-(Ce)