Citation: Ganguly, J.; Ghose, S. (1979). Aluminous orthopyroxene: Order-disorder, thermodynamic properties, and petrologic implications. Contributions to Mineralogy and Petrology (23,1969-), 69, pp. 375-385.
Formula: Al0.06 Fe0.096 Mg0.854 O3 Si0.97
Chemical name:(Mg0.854 Fe0.096 Al0.03) (Al0.03 Si0.97 O3)