glassy Quiz

...pilotaxitic texture connotes abundant plagioclase microlites prominently fluxioned in an overall sub-parallel manner and locally around phenocrysts (but strictly in a holocrystalline non-glassy matrix).

Relationships shown in Fig. 3 , B and C demonstrate that formation of the symplectite predated development of glassy kelyphite veins which formed by decompression melting during rapid ascent of the host alnöite.