Image: Flow-banded rhyolite

Flow-banded rhyolite (15 cm x 11 cm), Pokolbin, Hunter Valley District, New South Wales.

Photographer:

Stuart Humphreys

Rights:

© Australian Museum

Additional information

Rhyolite is a silicic, acidic volcanic rock composed of quartz and alkali feldspar, with minor plagioclase and/or biotite. It is the volcanic equivalent of granite.

Last Updated: 27 August 2009

Tags rhyolite, volcanic rock, igneous rocks, volcanic, volcanoes, mineralogy, geosciences,