BGS mineralogy and petrology collection record

Sample number E41589; COLLNOSN1650;
Sample Donor Sanderson,R.W.
Rock name 'Original entry: Porphyritic Andosite (Albitised)'
Stratigraphy Not entered
Comments BLOCK FROM AGGLOMERATE ORDOVISIAN U. VOLCANIC GROUP
Locality details SW SIDE OF LARGE QUARRY MOEL-Y-GOLFA 460M NE OF TREWERN CHURCH
50k map sheet Welshpool (151)

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Map reference SJ 2872 1193
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


E41589

Cross Polarized, E41589

Plane Polarized, E41589

Plane Polarized, E41589