zeolite
A group of hydrated aluminosilicate minerals used as molecular sieves, catalysts, and water softeners.
Zeolites are used for water purification.
scolecite
chabazite
From 沸 (ふつ, 'boil') + 石 (せき, 'stone'), referring to the mineral's property of releasing water when heated. The reading ふっせき results from a euphonic change (促音便).