AM_Feruvite
Formula:
(Ca.62 Na.38) Fe1.992 Mg2.025 Ti.291 Al4.722 B3 Si6 O31 H4
Name:
Feruvite
Unit cell:
16.012 16.012 7.245 90.0 90.0 120.0 , V=1608.64
Space group:
R3M (160)
Grice J D , Robinson G W , The Canadian Mineralogist , 27 (1989) p.199-203, Feruvite, a new member of the tourmaline group, and its crystal structure, Locality: Cuvier Island, New Zealand