Pericline also refers to a doubly plunging anticline or syncline.

Pericline is a form of albite exhibiting elongate prismatic crystals.[1]

Pericline twinning is a type of crystal twinning which show fine parallel twin laminae typically found in the alkali feldspars microcline.[2] The twinning results from a structural transformation between high temperature and low temperature forms.[3]


  1. ^ Mindat with location data
  2. ^ Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, p. 100, 20th ed., ISBN 0-471-80580-7
  3. ^ Tsatskis, I. and E.K.H. Salje (1996) Time evolution of pericline twin domains in alkali feldspars, American Mineralogist, Volume 81, pages 800-810 PDF