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Hydroxy-dravite
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| Hydroxy-dravite_6 Formula: Na.677 Ca.11 K.01 Mg2.088 Al6.111 Fe.783 Ti.042 Zn.009 Mn.006 V.006 Si5.958 B3 O30.98 F.02 H Name: Hydroxy-dravite Unit cell: 15.9541 15.9541 7.2035 90.0 90.0 120.0 , V=1587.88 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 TM65e, Locality: Arendal, Norway
