Image: Dacite
Description
Dacite (17.5 cm x 11 cm) Hammond Island, Torres Strait.
- Photographer:
- Stuart Humphreys
- Rights:
- © Australian Museum
Additional information
Dacite is a common, acidic volcanic rock composed of quartz and sodic plagioclase, along with small amounts of biotite and/or hornblende, and/or pyroxene.
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