Pumpellyite in Snowdonian Soils and Rocks

D. A. Jenkins and D. F. Ball
Dept. of Biochemistry and Soil Science, University College of North Wales, Bangor
The Nature Conservancy, Penrhos Road, Bangor

Summary: Detrital grains, noted during the mineralogical examination of certain Snowdonian soils, have been identified as varieties of the mineral pumpellyite : the source of one variety has been located in dolerites exposed in the area, and the identity of this variety confirmed by X-ray analysis.

Mineralogical Magazine; December 1964 v. 33; no. 267; p. 1093-1096; DOI: 10.1180/minmag.1964.033.267.04
© 1964, The Mineralogical Society
Mineralogical Society (www.minersoc.org)