BGS mineralogy and petrology collection record

Sample number E48492; COLLNOLA494;
Sample Donor Allen,P.M.
Rock name 'Original entry: Volcanic Rock'
Stratigraphy Not entered
Comments Altered sill
Locality details Craig Wen
50k map sheet Harlech (135)

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Map reference SH 7506 1800
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


E48492

Cross Polarized, E48492

Plane Polarized, E48492

Plane Polarized, E48492