Xonotlite and Rodingites from Wairere, New Zealand

J. P. O'Brien and K. A. Rodgers
Department of Geology, University of Auckland, New Zealand

Summary: Xenoliths of eucritic gabbros in an alpine-serpentinite body at Wairere have been altered to rodingites and xonotlite about their margins by hydrothermal metasomatism at temperatures between 430–470°C A chemical analysis and the optical properties of the xonotlite are reported, the textures of the rocks are described, and the metasomatic process is discussed.

Mineralogical Magazine; June 1973 v. 39; no. 302; p. 233-240; DOI: 10.1180/minmag.1973.039.302.11
© 1973, The Mineralogical Society
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