\ Warren C. Day 6FB&fPage &p&?'?(?)?@3c01 Geneva1Tms Rmn1Tms Rmn1Tms Rmn33" 2)3*4@@?#&! 4t2)3*???#&! 4% |3&  MgO (wt %)'4%$|3&  MnO (wt %)'4523   4$%13'43      44%]-3& MgO VARIATION DIAGRAM-MnO'44 == t,