"Ward's Phenomena Lab Activities"

Gray-to-brown basaltic, with over 50% vesicles.

Coarse grained and abundant in plagioclase feldspar.

Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Coarse-grained plagioclase and pyroxene with some olivine.

Classic, very coarse-grained igneous texture.

Coarse, 'salt and pepper': dark pyroxene and light andesine. Provides perfect representation of an intermediate igneous rock.

Coarse-grained, with microcline, biotite and horblende phenocrysts.

Pale pink felsite, with small sanidine phenocrysts.

Dark gray with abundant gas pocket vesicles.

Gray andesite with phenocrysts of felspar and/or hornblende.