Pericline

Pericline also refers to a doubly plunging anticline or syncline.

Pericline is a form of albite exhibiting elongate prismatic crystal. Pericline twinning is a type of crystal twinning which show fine parallel twin laminae typically found in the alkali feldspars sanidine, microcline and albite. The twinning results from a structural transformation between high temperature and low temperature forms.

Additional recommended knowledge

What is the Correct Way to Check Repeatability in Balances?

Daily Visual Balance Check

Recognize and detect the effects of electrostatic charges on your balance

References

• Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy, p. 100, 20th ed., ISBN 0-471-80580-7
• 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
• Mindat with location data