#188
P-6c2
Example – Benitoite, BaTi(Si3O9)
Named from its locality: San Benito County, California, USA.
Verfeinerung der Kristallstruktur von Benitoit BaTi(Si3O9)
Fischer, K.
Zeitschrift fuer Kristallographie, (1969) 129, p222-p243
http://www.webmineral.com/data/Benitoite.shtml
Ba (green)
TiO6 octahedra (blue)
SiO4 tetrahedra (orange)