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felsite; (devitrified pitchstone?), pale grey, with feldspar and quartz phenocrysts

Cir Mhor, Arran, [North Ayrshire], [Scotland] intermediate member of Judd's Composite dyke, [Palaeogene] Tyrrell label says "Ar 188 banded felsite intermediate member of Judd's composite dyke E. flank of Cir Mhor, Arran Coll GWT 31/7/23"