You're viewing this item in the new Europeana website. View this item in the original Europeana.

pitchstone; dark grey, porphyritic, with adundant large crystals of quartz and oligoclase? feldspar

Roinn Clumhach, Glen Callum Bay, south Isle of Bute, [Argyll and Bute], [Scotland] rapidly cooled facies of composite sill, [Palaeogene] Nice rock.