from The Century Dictionary.
- noun A rare mineral, consisting essentially of the silicate, niobate, and titanate of sodium with water, occurring in silver-white tabular crystals with pearly luster: found in southern Greenland.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy A triclinic-pinacoidal
mineralcontaining calcium, fluorine, hydrogen, iron, manganese, niobium, oxygen, silicon, sodium, and titanium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
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