BGS mineralogy and petrology collection record

Sample number E66364; COLLNOWPR108;
Sample Donor Pratt, W.
Rock name Not entered
Stratigraphy Not entered
Comments Dolerite
Locality details Tonfanau Dolerite Qry. 200 m SW of Beacon
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View a geological map near 'Barmouth'

Map reference SH 5726 0345
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


E66364

Cross Polarized, E66364

Plane Polarized, E66364

Plane Polarized, E66364