A Note on a Nordmarkite and an Associated Rare-Earth Mineral from the Ben Loyal Syenite Complex, Sutherlandshire

O. von Knorring and R. Dearnley1
Dept. of Geology, University of Leeds.
1Present address: Geological Survey and Museum, Exhibition Road, London, S.W.7. Taken as read 5 November 1959.

Summary: A nordmarkite from the Ben Loyal syenite complex has been analysed, in which a powdery yellow mineral occurs in miarolitic cavities. The mineral may be a new hydrated species with a monazite structure and a chemical composition essentially that of monazite but with silicon partly replacing phosphorus and with magnesium, calcium, and iron partly replacing the rare earths.

Mineralogical Magazine; March 1960 v. 32; no. 248; p. 389-391; DOI: 10.1180/minmag.1960.032.248.05
© 1960, The Mineralogical Society
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