BGS mineralogy and petrology collection record

Sample number E41765; COLLNOLA13;
Sample Donor Allen,P.M.
Rock name 'Original entry: Volcanic Rock'
Stratigraphy Not entered
Comments 4' thick sill
Locality details Waterfall below Pont y Gain
50k map sheet Harlech (135)

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Map reference SH 7509 3269
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


E41765

Cross Polarized, E41765

Plane Polarized, E41765

Plane Polarized, E41765