Anorthite and albite are important calcium - containing feldspars.鈣長(zhǎng)石與鈉長(zhǎng)石是重要的含鈣長(zhǎng)石.The plagioclase contains albite, oligoclase, andesine, laboratories, bytownite and anorthite.鈉長(zhǎng)石 、 更長(zhǎng)石、中長(zhǎng)石 、 拉長(zhǎng)石 、 培長(zhǎng)石和鈣長(zhǎng)石屬于斜長(zhǎng)石大類....