M8243

Clinopyroxene, plagioclase, and opaque phenocrysts set in a glassy, plagioclase-rich matrix.



Clinopyroxene, plagioclase and opaque phenocrysts. Plagioclase phenocrysts exhibit resorption features and overgrowths, indicating plagioclase became unstable, but before all the phenocrysts were resorbed, it became a liquidus phase again. The relict plagioclase cores acted as seeds for new growth.