Image: Perlite

Perlite

Perlite (12 cm x 7 cm), 14 km south-west of Brunswick Heads, New South Wales.

Photographer:
Stuart Humphreys
Rights:
© Australian Museum

Notes

Perlite is a volcanic glass that exhibits numerous concentric cracks. Some are high in water and expand when heated.

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Tags perlite, volcanic glass, volcanoes, igneous rocks, specimen, mineralogy, geosciences,