so 



rKKcV (UENSKL 



I'"ij(. H a. X'esirular aphyric feldspar basalt cokminar structure . 



(see Fig-. 9 . 



30. Portezuelo, Masatierra 



Fig. <S 1). Same spe( inien as Fig. 8 a, niagiiified x 65. Vesicle in upper right corner filled with 



o})al. Portezuelo, Masatierra, 



