Petalite

Pet´al`ite

(Min.) A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia.

petalite

[′ped·əl‚īt] (mineralogy) LiAlSi₄O₁₀ A white, gray, or colorless monoclinic mineral composed of silicate of lithium and aluminum, occurring in foliated masses or as crystals.

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