叶双晶石 fremontite ; [矿物] natramblygonite

钠长石双晶 albite twin ; albite twinning ; albite e twin

方解石双晶 calcite twinning

肖钠长石双晶 pericline twin ; pericline e twin

双晶锡石 [矿物] visor tin

尖晶石双晶律 spinel twin law

双晶环沸石 twinned dachiardite ; svetlozarite

肖钠长石双晶律 pericline twin law ; pericline law

尖晶石式双晶 spinel twin