Igneous Rocks

Photo of pumice sample.

Pumice

Photo of two scoria samples.

Scoria

Photo of obsidian samples.

Obsidian

Photo of three granite samples.

Granite

Photo of two diorite samples.

Diorite

Photo of Gabbro sample.

Gabbro

Photo of peridotite sample.

Peridotite

Photo of three porphyritic rhyolite samples.

Porphyritic Rhyolite

Photo of two porphyritic andesite samples.

Porphyritic Andesite

Photo of basalt sample.

Basalt