One of the mysteries of the English language finally explained.
A dark, fine-grained trachyte which has oligoclase as the main feldspar and also contains olivine, orthoclase, and apatite.
Early 20th century; earliest use found in Alfred Harker (1859–1939), petrologist. From Mugeary, the name of a village on the Isle of Skye in the Western Isles of Scotland + -ite.
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