BGS mineralogy and petrology collection record

Sample number E67068; COLLNOWPR117A;
Sample Donor Pratt, W.
Rock name 'Original entry: Hornfels'
Stratigraphy Not entered
Comments Hornfelsed. Ty'r Gawen Formation
Locality details 750 m at 297 deg from Pen y Wen
50k map sheet Barmouth (149)

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Map reference SH 5764 0378
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


E67068

Cross Polarized, E67068

Plane Polarized, E67068

Plane Polarized, E67068