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bytownite

[bahy-tou-nahyt] /baɪˈtaʊ naɪt/
noun
1.
a blue to dark-gray mineral near the anorthite end of the plagioclase feldspar group.
Origin
1865-1870
1865-70; named after Bytown (old name of Ottawa, Canada), where first found; see -ite1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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bytownite in Science
bytownite
  (bī-tou'nīt)   
A bluish to dark gray triclinic mineral of the plagioclase feldspar group. Bytownite occurs in alkaline igneous rocks. Chemical formula: (Ca,Na)(Si,Al)4O8.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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