Sodalite meaning

sōd'l-īt'
A blue-white mineral, Na4 Al3 Si3 O12 Cl, found in silica-poor igneous rocks.
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A usually blue, hard mineral, Na4(AlSiO4)3Cl, used in making jewelry; sodium aluminum silicate chloride.
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(mineralogy) A mineral of alkaline igneous and plutonic rocks that are low in silica, of the chemical composition of sodium aluminum silicate with chlorine, Na4Al3Si3O12Cl. Pink sodalite is sometimes called hackmanite. Sodalite and lazurite form the sodalite Group of silicate minerals.
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Origin of sodalite

  • Named for the alkaline silicate composition.
    From Wiktionary