AM_Antigorite_1
Formula: Mg45 Si32 O138 H58
Name: Antigorite
Unit cell: 81.664 9.255 7.261 90.0 91.409 90.0 , V=5486.21
Space group: C12/M1 (12)

Capitani G C , Mellini M , American Mineralogist , 91 (2006) p.394-399, The crystal structure of a second antigorite polysome (m = 16),, by single-crystal synchrotron diffraction