BGS mineralogy and petrology collection record

Sample number	E49935; COLLNOLA585;
Sample Donor	Allen,P.M.
Rock name	'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Dolerite
Locality details	170 yds 190 deg from Cwm Heisian Mill
50k map sheet	Harlech (135) View images in GeoScenic related to 'Harlech' View the geology near 'Harlech'
Map reference	SH 7717 2782
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.