bytownite

[ bahy-tou-nahyt ]
/ baɪˈtaʊ naɪt /

noun

a blue to dark-gray mineral near the anorthite end of the plagioclase feldspar group.

Origin of bytownite

1865–70; named after Bytown (old name of Ottawa, Canada), where first found; see -ite1

Words nearby bytownite

Example sentences from the Web for bytownite

Scientific definitions for bytownite

bytownite
[ bī-tounīt ]

A bluish to dark gray triclinic mineral of the plagioclase feldspar group that contains a higher proportion of calcium than sodium. Bytownite occurs in alkaline igneous rocks. Chemical formula: (Ca,Na)(Si,Al)4O8.