AM_Heulandite-Sr_3
Formula: Sr2.678 (Si13.5 Al4.5) O44.58 H38
Name: Heulandite-Sr
Unit cell: 17.642 17.775 7.414 90.0 116.897 90.0 , V=2073.42
Space group: C1M1 (8)

Dobelin N , Armbruster T , American Mineralogist , 88 (2003) p.527-533, Stepwise dehydration of Sr-exchanged heulandite:, A single-crystal X-ray study, Note: dehydrated at 200 deg C, measured at -170 deg C