other names · Added 10 October 2026
Trachybasalt
Volcanic rock
Trachybasalt is a volcanic rock with a composition between trachyte and basalt. It resembles basalt but has a high content of alkali metal oxides. Minerals in trachybasalt include alkali feldspar, calcic plagioclase, olivine, clinopyroxene and likely very small amounts of leucite or analcime.
From Wikipedia (CC BY-SA). Not a dictionary word, so it lives in Other Names.
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