BGS mineralogy and petrology collection record

Sample number E66221; COLLNOWPR70;
Sample Donor Pratt, W.
Rock name Rhyolite. 'Original entry: Rhyolite'
Stratigraphy Not entered
Comments Not entered
Locality details 310 m. NNW. of Spot height 766 m. (Craig Cwm Amarch).
50k map sheet Barmouth (149)

View images in GeoScenic related to 'Barmouth'

View a geological map near 'Barmouth'

Map reference SH 7037 1204
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, E66221

Plane Polarized, E66221

Plane Polarized, E66221