One of the mysteries of the English language finally explained.
A blue mineral consisting mainly of an aluminosilicate and chloride of sodium, occurring chiefly in alkaline igneous rocks.
- ‘The intermediate zone consists of massive lilac-gray sodalite with inclusions of nepheline, dark green aegirine, and pale green fluorapatite.’
- ‘The minerals in my set include fluorite, a very pretty piece of sodalite, and a nice piece of polished tiger eye.’
- ‘Lazurite, the deep blue variety of sodalite with sulphur replacing some of the chlorine, is dominant in lapis-lazuli.’
- ‘Associated minerals include various pyroxenes and zeolites in addition to the more familiar lazurite, sodalite, pyrite, and carbonates.’
- ‘The province is also endowed with other non-traditional minerals including nickel, feldspar, emerald, limestone, granite, amethyst, sodalite and syenite.’
Early 19th century: from soda + -lite.
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