Bytownite Definition

bī-tounīt
noun
A blue to dark-gray variety of plagioclase feldspar that contains a higher proportion of calcium than sodium and occurs in alkaline igneous rocks.
American Heritage

Other Word Forms of Bytownite

Noun

Singular:
bytownite
Plural:
bytownites

Origin of Bytownite

  • After Bytown , former name of Ottawa, Ontario, near where a sample of the mineral was found

    From American Heritage Dictionary of the English Language, 5th Edition

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