Pumpellyite-Bearing Basic Igneous Rocks from the Lower Ordovician of North Pembrokeshire, Wales

R. E. Bevins
Department of Geology, The University, Keele, Staffs. ST5 5BG

Summary: The first occurrence of pumpellyite in the Lower Ordovician volcanic rocks of North Pembrokeshire is reported and its form and chemistry are described. The significance of pumpellyite in relation to the grade of metamorphism attained during the Caledonian orogenic episode is discussed.

Mineralogical Magazine; March 1978 v. 42; no. 321; p. 81-83; DOI: 10.1180/minmag.1978.042.321.10
© 1978, The Mineralogical Society
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