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beryllonite

noun
be·​ryl·​lo·​nite | \ bə-ˈri-lə-ˌnīt\
plural -s

Definition of beryllonite

: a mineral NaBePO4 consisting of sodium beryllium phosphate occurring in light-colored topazlike orthorhombic crystals (hardness 5.5–6, specific gravity 2.85)

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History and Etymology for beryllonite

New Latin beryllium + English -on + -ite

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