SL8312
Quartz, amphibole (both prismatic and basal sections), and plagioclase
set in a glassy inetersertal groundamss.
Basal section of amphibole, showing the typical
120˚/60˚ cleavage angles, intergrown with biotite. Plagioclase phenocrysts
are also present. PPL
Amphibole and biotite phenocrysts. PPL
Optically zoned plagioclase phenocryst. XP
Plagicolase glomerocryst with some crystals
ehibiting optical zonation. XP
