beryllonite


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beryllonite

[bə′ril·ə‚nīt]
(mineralogy)
NaBe(PO4) A colorless or yellow mineral occurring in short, prismatic or tabular, monoclinic crystals with two good pinacoidal cleavages at right angles; hardness is 5.5-6 on Mohs scale, and specific gravity is 2.85.