BGS mineralogy and petrology collection record

Sample number E15645
Sample Donor Jones, J.G.
Rock name Not entered
Stratigraphy Not entered
Comments Not entered
Locality details Cwm Gwnnen, 1.5 ml SW of Pen y Bont Fawr
50k map sheet Bala (136)

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Map reference
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


E15645

Cross Polarized, E15645

Plane Polarized, E15645

Plane Polarized, E15645