Irregular mass of vent agglomerate in Moine psammite, probbaly about 140 x 50 yds. Fine to coarse, the latter with angular to sub-rounded fragments of psammite, etc; cut by thin camptonite dyke. Specimen of finer type
Locality details
Meall a' Phubuill, 610 yds S 40 deg W of summit 2533 ft