AM_Oxy-dravite
Formula:
Na.559 Ca.263 K.003 Mg2.034 Al6.198 Fe.801 Ti.06 Cr.015 Mn.009 V.009 Si5.88 B3 O30.94 F.06 H.469
Name:
Oxy-dravite
Unit cell:
15.9636 15.9636 7.1911 90.0 90.0 120.0 , V=1587.04
Space group:
R3M (160)
Bosi F , Lucchesi S , European Journal of Mineralogy , 16 (2004) p.335-344, Crystal chemistry of the schorl-dravite series, Note: Tourmaline TM112c, Locality: Haddam, Connecticut, U.S.A.