Story: Rock and mineral names

Ignimbrite under the microscope (2nd of 2)

Ignimbrite under the microscope

Ignimbrite consists mainly of glass fragments that were laid down when very hot, and partly welded together. In this piece of Ongatiti ignimbrite, small glass fragments are mixed with larger white crystals of quartz, which crystallised in the magma before it was ejected.

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University of Waikato

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How to cite this page:

Simon Nathan, 'Rock and mineral names - Rocks named in New Zealand', Te Ara - the Encyclopedia of New Zealand, (accessed 21 February 2024)

Story by Simon Nathan, published 12 Jun 2006