One of the mysteries of the English language finally explained.
A calcium-rich plagioclase present in many basic igneous rocks.
- ‘They range from bytownite - labradorite in basalts and gabbros, andesine - oligoclase in diorites and andesites to albite in granites and rhyolites.’
- ‘I'm interested in some of the Bytownite but don't get paid until Saturday...’
- ‘The groundmass consists mainly of bytownite with large grains of diopside and of colourless olivine, and small octahedrons of magnetite.’
- ‘The highly soluble and aluminous bytownite favored the formation of allophane.’
- ‘I received a specimen of Bytownite today in the mail.’
Mid 19th century: from Bytown, the former name of Ottawa, Canada, + -ite.
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