Peraluminous rocks will have corundum [Al2O3] in the CIPW norm and no diopside in the norm. ... 석영(Q), 알칼리장석(A), 사장석(P), 준장석(F) QAP(F)-diagram 심성암: mode 분석(modal analysis) -- 광물조성비 화산암:화학성분-- CIPW norm광물 ... In the CIPW norm, acmite [NaFe+3Si2O6 ] and/or sodium metasilicate Na2SiO3 will occur as normative minerals