AM_Afwillite_2
Formula: Ca3 O10 Si2 H6
Name: Afwillite
Unit cell: 16.33 5.6389 11.685 90.08 126.446 89.95 , V=865.55
Space group: P1 (1)

Rastsvetaeva R K , Chukanov N V , Zadov A E , Crystallography Reports , 54 (2009) p.418-422, Refined structure of afwillite from the northern Baikal region, Locality: Yoko Dovyrensky massif, northern Baikal region, Russia