Sedimentary Analcime at Murrurundi, New South Wales, Australia

Beryl Nashar
Department of Geology, The University of Newcastle, 2308, Australia

Summary: Sedimentary analcime in a small basin in Cainozoic basalt at Murrurundi, New South Wales, has probably resulted from the reaction of Na-rich water on colloidal nontronite derived from volcanic ash. Based on cell dimension (13.713 Å) and Δ2θ(1·81) determined by Saha's (1959) method it is a Group C low-silica type of Coombs and Whetten (1967).

Mineralogical Magazine; June 1978 v. 42; no. 322; p. 241-243; DOI: 10.1180/minmag.1978.042.322.11
© 1978, The Mineralogical Society
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