AM_Chlorite
Formula: Mg3 Si2 O9 H4
Name: Chlorite
Unit cell: 5.335 9.24 28.735 90.0 90.0 90.0 , V=1416.50
Space group: C111 (1)

Lister J S , Bailey S W , American Mineralogist , 52 (1967) p.1614-1631, Chlorite polytypism: IV. Regular two-layer structures, refined structure