#56
Pccn
Example – Valentinite, Sb2O3
Named after the German alchemist, B. Valentinus (16th century).
The crystal structure of orthorhombic antimony trioxide, Sb2O3
Svensson C.
Acta Crystallographica B30 (1974) 458-461
CIF
http://rruff.geo.arizona.edu/AMS/download.php?id=10500.cif&down=cif