Synonym: Scapolite group.
English: Rod stone.
MineralogyScapolites are a group of rock-forming silicate minerals composed of aluminium, calcium, and sodium silicate with chlorine, carbonate and sulfate.
Content:Meionite (Ca4Al6Si6O24CO3).
Marialite (Na4Al3Si9O24Cl).
Silvialite (Ca,Na)4Al6Si6O24(SO4,CO3).