Browse Items (2 total)

Hand Specimen Greenish black, coarse-grained rock, comprising olivine, clinopyroxene and plagioclase.Grains typically 1-2 mm across.  Thin-section Olivine - Subhedral to euhedral grains making up ~45% of the rock. Alteration to…

Hand Specimen Pink-brown, fine-grained rock. Strong planar shear fabric, produced by flow: streaks of dark red-brown and black-brown in the groundmass, and siliceous streaks and lenses. Gold-coloured, metallic pyrite, and a black mineral are…