... magnesium oxide , and silica , as follows : 45 hours at 1,050 ° C , 115 hours at 1,150 ° C , and 30 hours at 1,250 ... composition were made . The final product analyzed 41.16 percent calcium oxide , 14.82 percent magnesium oxide , and ...
... A12S 3 ( rhombohedral ) X - ray diffraction patterns of A12S -- Continued ( face - centered cubic ) hkl d , A I hk1 d , A I hk1 A12S 3 d , A I 216 1.716 2 208 1.710 16 119 1.685 45 119 / 305 1.645 1 1.0.10 1.650 8 217 1.621 2 220 1.618 ...
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