Axinites from the Contact Skarns of the Meldon Aplite, Devonshire, England

M. Nawaz Chaudhry and R. A. Howie
Department of Geology, University of the Panjab, Lahore, West Pakistan
Department of Geology, King's College, London, W.C. 2

Summary: Chemical analyses, optical properties, and specific gravities are presented for nine axinites. A reciprocal substitution relationship is demonstrated between Mg and Mn2+, and a linear variation diagram is constructed between refractive indices and the (Fe2++Fe3++Mn2++Ti) ions calculated on the basis of 16(O,OH). The composition of these axinites is independent of the composition of their host rocks; their colour appears to be independent of the Fe2+/Mn2+ ratio for the range of iron and manganese values of the specimens investigated.

Mineralogical Magazine; March 1969 v. 37; no. 285; p. 45-48; DOI: 10.1180/minmag.1969.037.285.05
© 1969, The Mineralogical Society
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