Supplementary materials

Table S1: Luinaite-(OH): sites, fractional atomic coordinates, isotropic (*) or equivalent-isotropic displacement parameters (in Å2), site occupancies (s.o.) for schorl-1A from Cleveland tin mine, Australia (Sample LUI-AUS), and for oxy-dravite-1A from Blue Mountain Saddle, USA (Sample LUI-USA);
Table S2: Luinaite-(OH): selected bond distances (in Å) for schorl-1A from Cleveland tin mine, Australia (Sample LUI-AUS), and for oxy-dravite-1A from Blue Mountain Saddle, USA (Sample LUI-USA);

Crystallographic Information Files: LUI-AUS.cif and LUI-USA.cif.