BGS mineralogy and petrology collection record

Sample number E67070; COLLNOWPR118/1;
Sample Donor Pratt, W.
Rock name 'Original entry: Hornfels'
Stratigraphy Not entered
Comments Hornfelsed. Ty'r Gawen Formation
Locality details 720 m at 296 deg from Pen y Wen
50k map sheet Barmouth (149)

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Map reference SH 5765 0374
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


E67070

Cross Polarized, E67070

Plane Polarized, E67070

Plane Polarized, E67070