The core-rim compositions of a normally zoned plagioclase crystal are as follows core: cao6 na, alıe si24 os rim: cao4 na, alıa siz6 os the amount of increase o

The core-rim compositions of a normally zoned plagioclase crystal are as follows Core: Cao6 Na, Alıe Si24 Os Rim: Cao4 Na, Alıa Siz6 Os The amount of increase of Na atom from core to rim per formula unit of plagioclase is (give answer in one decimal place). Considering garnet chemical formula in 12 oxygen basis, the number of Mg cations in a garnet of chemical composition P (as shown in the figure) is_ (give answer in two decimal places). Almandine (Fe,Al,Si,O) y rope (Mg,Al,Si,O,) Grossular (Ca,Al,Si,O,)