The System Diopside-Anorthite—åkermanite

E. Christiaan De Wys1 and Wilfrid R. Foster
College of Engineering, Ohio State University, Columbus, Ohio, U.S.A.
1Now at Ferro Corporation, Cleveland, Ohio.

Summary: The high-temperature phase equilibrium relationships in the system diopside-anorthite—åkermanite have been investigated by the quenching method. This system may be regarded as essentially a simple eutectic system. The eutectic is located at the composition 9 diopside:44 anorthite:47 åkermanite (by weight) and at a temperature of 1226° C. Åkermanite is a stable phase at least as low as this temperature. Triclinic anorthite is the only form of CaAl2Si2O8 encountered in the liquidus range of temperatures.

Mineralogical Magazine; March 1958 v. 31; no. 240; p. 736-743; DOI: 10.1180/minmag.1958.031.240.03
© 1958, The Mineralogical Society
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