Bytownite
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A plagioclase feldspar, the fifth member of the Albite-Anorthite solid solution series. Bytownite is rare, and normally occurs in small grains in lime-rich igneous rocks. Clear pale yellow crystals have come from Mexico and Oregon. uncountable, usually
Etymology
From Bytown + -ite, named for the type locality in Bytown (now Ottawa), Canada, but this locality was later discredited. The name, however, was kept.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.