You searched for: Igneous Rocks

Supplier: Avantor

Gray andesite with large, blocky hornblende phenocrysts.

Supplier: Avantor

Introduce your students to Gray Andesite with large phenocrysts of hornblende.

Supplier: Avantor

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

Supplier: Avantor

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

Supplier: Avantor

Pale pink felsite, with small sanidine phenocrysts.