During the deformation of plagioclase two types of deformation twin-ning,albite twinning and pericline,twinning,are produced.
在所统计的９个样品内，有６个样品的钠长石双晶几率高于肖钠双晶，其余３个样品的肖钠双晶几率高于钠长石双晶。
