| Title | Origin of Water in New Zealand Perlites |
|---|---|
| Authors | Jim LAWLESS, Phil WHITE, Jeff MAUK, Craig JOHNSON |
| Year | 2015 |
| Conference | World Geothermal Congress |
| Keywords | perlite, NZ, TVZ, hydrothermal, magmatic water, volcanic, permeability |
| 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 ( |