Greenland spar


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Greenland spar

n.
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Noun1.Greenland spar - a white mineral consisting of fluorides of aluminum and sodium; a source of fluorine
atomic number 9, fluorine, F - a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition