BGS mineralogy and petrology collection record

Sample number E61959; COLLNOMH1560;
Sample Donor Howells,M.F.
Rock name Trachytic-Rock.
Stratigraphy Not entered
Comments Granophyre
Locality details S of Llyn Cyri
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View a geological map near 'Barmouth'

Map reference SN 6570 1114
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


Cross Polarized, E61959

Plane Polarized, E61959

Plane Polarized, E61959