metabasite [ actinolite trap ]: coarsely crystalline with schistose structure. Chlorite passes into actinolite. Well crystallised epidotes in great quantity. Brown mica not conforming to the shearing. 2420, 2392 and 2826 brown mica and epidote appear
Locality details
E of Baldwin River, 150yds W of Creg y Cowin farm: brown mica, 3' much altered dyke