Origin of Water in New Zealand Perlites
- Key words
- perlite, NZ, TVZ, hydrothermal, magmatic water, volcanic, permeability
- Conference
- World Geothermal Congress
- Year
- 2015
- Session
- Geology
- Language
- English
- Paper number
- 12005
Full text
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Abstract
“Perlites” in the broad, industrial sense are volcanic glasses which contain enough water (typically 1 to 3%) that they will expand when rapidly heated, usually to around 800°C or more. Most are of a silicic composition. They differ from obsidian which has a much lower water content (
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