APP Definition: It is a rule specifying the orientation of alternating lamellae in multiple twinfeldspar crystals; the twinning plane is brachypinacoid and is common in albite.鈉長石雙晶律nà cháng shí shuāng jīng lǜalbite: a widely distributed rock-forming feldspar......（本文共 380 字） [閱讀本文] >>
