Tourmaline Structure Data

Tourmaline Structure Data
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Tourmaline

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Tourmaline_1
Formula: Na.46 Ca.36 Mg2.04 V1.11 Cr.18 Fe.18 Al5.94 Ti.06 B3 Si5.64 O31 H3
Name: Tourmaline
Unit cell: 15.967 15.967 7.191 90.0 90.0 120.0 , V=1587.69
Space group: R3M (160)

Foit F F , Rosenberg P E , American Mineralogist , 64 (1979) p.788-798, The structure of vanadium-bearing tourmaline and its implications regarding, tourmaline solid solutions

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