How high is the silica content of Mount Ruapehu, New Zealand? How high is the crater?

Georgina and Sarah

Dear Georgina and Sarah,

Sorry for the delay in answering your question.

The silica content of tephra from Ruapehu averages about 60 weight percent silica. The crater lake, which is in West Crater, was at an elevation of 8,416 feet (2,566 m)in 1975.

Steve Mattox, University of North Dakota

Source of Information:
Cole, J.W., and Nairn, I.A., 1975, Part XXII, New Zealand: Catalogue of the active volcanoes of the world including solfatara fields, International Association of Volcanology, Rome, Italy, 156 p.

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