Diorite

Diorite - a small polished slab - coarse grained, with interlocking crystals of white, subhedral plagioclase and very dark green hornblende - locality unknown

Diorite

Diorite - a small polished slab - medium grained -largely composed of plagioclase lathes, many of which show zoning - finer grained groundmass composed of more plagioclase and very dark green mineral, probably hornblende or a pyroxene - locality unknown

Diorite

Diorite, from Devonshaw Quarry, Powmill, Kinross-shire, Scotland

Diorite

Hand Specimen : Diorite, mafic showing slickensides from the Ivrea - Verbano tectonic zone, from Ivrea, Turin, Piedmont, Italy