Andesite

2 topics · 2 sources

Solar Energy

Volcanic rock (or lava), characteristically medium dark in color and containing 54 to 62 percent silica and moderate amounts of iron and magnesium (intermediate composition).

Office of Energy Efficiency and Renewable Energy (EERE) — Solar Energy Development PEIS Glossary retrieved 2014-06-15

Science

Water

Fine-grained, medium gray volcanic rock of intermediate composition between rhyolite and basalt.

Bureau of Reclamation — Bureau of Reclamation Glossary