AM_Jennite Formula: Ca9 Si6 O32 H22 Name: Jennite Unit cell: 10.576 7.265 10.931 101.3 96.98 109.65 , V=759.50 Space group: P-1 (2)

Bonaccorsi E , Merlino S , Taylor H F W , Cement and Concrete Research , 34 (2004) p.1481-1488, The crystal structure of jennite, Ca9Si6O18(OH)6*8H2O, Locality: Fuka, Japan