BGS mineralogy and petrology collection record

Sample number E8465; COLLNO126;
Sample Donor Calloway, G.A.
Rock name 'Original entry: Conglomerate'
Stratigraphy Not entered
Comments See Mem.Geol.of Anglesey c.f.p.325.fig.202. Ordovician. Arenig. [Tywyn Ridge is crossed out on loose sheet with samples] Above base of Palaeozoics. Contains what seems to be fragments of hornblende g
Locality details West shore of Llyn Traphwll
50k map sheet Holyhead (93)

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Map reference SH 321 770
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


E8465

Cross Polarized, E8465

Plane Polarized, E8465

Plane Polarized, E8465