AM_Phase-A_2
Formula: Mg7 Si2 O14 H6
Name: Phase-A
Unit cell: 7.7972 7.7972 9.5071 90.0 90.0 120.0 , V=500.56
Space group: P63 (173)

Kagi H , Parise J B , Cho H , Rossman G R , Loveday J S , Physics and Chemistry of Minerals , 27 (2000) p.225-233, Hydrogen bonding interactions in phase A [Mg7Si2O8(OH)6], at ambient and high pressure, Sample: P = 3.2 GPa