Ralstonite

Ral´ston`ite

(rạl´stŭn`īt)

(Min.) A fluoride of alumina and soda occurring with the Greenland cryolite in octahedral crystals.

ralstonite

[′rȯl·stə‚nīt] (mineralogy) NaMgAl₅F₁₂(OH)₆·3H₂O A colorless, white, or yellowish mineral composed of hydrous basic sodium magnesium aluminum fluoride, occurring in octahedral crystals.

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