AM_Hemimorphite_1
Formula: Zn4 Si2 O9 H2
Name: Hemimorphite
Unit cell: 8.191 10.824 5.088 90.0 90.0 90.0 , V=451.10
Space group: IMM2 (44)

Libowitzky E , Kohler T , Armbruster T , Rossman G R , European Journal of Mineralogy , 9 (1997) p.803-810, Proton disorder in dehydrated hemimorphite - IR spectroscopy, and X-ray structure refinement at low and ambient temperatures, T = 293 K