perthite

[ pur-thahyt ]

nounMineralogy.
  1. a variety of feldspar containing irregular bands of albite in microcline.

Origin of perthite

1
1832; named after Perth, Ontario, Canada; see -ite1

Other words from perthite

  • per·thit·ic [per-thit-ik], /pərˈθɪt ɪk/, adjective
  • per·thit·i·cal·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024