BGS mineralogy and petrology collection record

Sample number E46360; COLLNOBP63;
Sample Donor Lowe,D.J.
Rock name 'Original entry: Dolerite'
Stratigraphy Not entered
Comments Altered dolerite from sill in Ffestiniog Flags
Locality details Exposure, 1270 m at 169 deg from Summit Foel Boeth
50k map sheet Harlech (135)

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Map reference SH 7820 3291
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


E46360

Cross Polarized, E46360

Plane Polarized, E46360

Plane Polarized, E46360