Matrix Method in Multiple Projection through Plagioclase

사장석(斜長石)을 포함(包含)한 복수투영(複數投影)에 있어서의 행렬식(行列式) 이용(利用)에 관(關)한 연구(硏究)

Projection method has been used in the phase equilibria study. The projection is made through the saturated phase on the smaller chemical system from larger system. This decreases the number of phases which are included in the larger chemical system. In multiple projection containing plagioclase as a projection phase, there is a difference in matrix calculation when plagioclase is treated as a single composite component and separately as an albite and anorthite. The matrix calculation is considered to be more usable and easier in multiple projection. The value of the A component in the AFM system, which is the smaller system projected from the larger one, is effected and varies according to the change in the An content in plagioclase that is examined as an example.