Answer | Crossword Clue |
---|---|
meionite | member of the scapolite group, rich in calcium and containing no sodium |
montmorillonite | An aluminum-rich clay mineral of the smectite group, containing some sodium and magnesium |
scapolites | SCAPOLITE, any of a group of rare minerals, silicates of aluminium, calcium, and sodium with some chlorine, aka wernerite |