An uncommon, white, vitreous natural fluoride of aluminum and salt, Na3AlF6, almost hidden in liquid in powdered form and utilized mainly inside electrolytic data recovery of aluminum. Also called Greenland spar.
The mineral salt aluminium fluoride (Na3AlF6).
A fluoride of sodium and aluminum, present Greenland, in white cleavable public; -- utilized as a source of soda and alumina.
A fluorid of salt and aluminium found in Greenland, where it types an extensive bed.
a white mineral composed of fluorides of aluminum and sodium; a source of fluorine