Phenocryst fracturing may also be due to movement and mechanical contact between crystals within the lava flow during emplacement (Peterson, 1972). Buford and co-owner Terry Clarke (figure 10) have ...

A profile (core–rim) performed on a plagioclase phenocryst of the Tamboril pluton demonstrates a smooth reverse zoning with a nucleus slightly enriched in Na and depleted in Ca. Figure 3 ...