from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A triclinic-pinacoidal mineral containing calcium, fluorine, oxygen, silicon, sodium, titanium, and zirconium.
from The Century Dictionary and Cyclopedia
- n. A silicate of calcium and sodium, containing also zirconium and titanium: it occurs in monoclinic crystals and in fibrous forms of a pale orange color. It is found in the elæolite-syenite of southern Norway.