BGS mineralogy and petrology collection record

Sample number E4933; COLLNO179;
Sample Donor H.D.C
Rock name 'Original entry: Ophitic Dolerite'
Stratigraphy Not entered
Comments Much Prehnite. F. Ordov.
Locality details Craig cwlwm Qy., Porth-y-Pistyll near Aberdaron
50k map sheet Aberdaron and Bardsey Island (133)

View images in GeoScenic related to 'Aberdaron and Bardsey Island'

View the geology near 'Aberdaron and Bardsey Island'

Map reference SH 162 249
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E4933

Cross Polarized, E4933

Plane Polarized, E4933

Plane Polarized, E4933