Fig. 4

(a) SEM BSE of sample 2, PEC is distributed in the form of stars in sugilite (SUG). (b) SEM BSE of sample 4, SUG is distributed in the form of gravels in the matrix of RIC. (c) SEM BSE of sample 12, SUG and PEC are distributed in a fibrous and oriented manner. (d) SEM BSE of sample 14, SUG, PEC and AEG are distributed in a granular manner. (e) SEM BSE of sample 15, SUG and PEC are distributed in a granular manner. (d) SEM BSE of sample 17, SUG, AEG and QRZ are distributed in a granular manner.