BGS mineralogy and petrology collection record

Sample number E32382; COLLNOAM28;
Sample Donor Mills,D.A.C.
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Representative sample of Upper ashes of Arenig (Llandillo) Fearnsides QJGS 1905 collected adjacent to and at site of proposed Liverpool reservoir-Llyn-Tryweryn-Mawr. See also HW. 1001 (sliced rock E32103)
Locality details Specimen from temporary quarry on E. side of Old Derfel, 250 Yds. W. of Gwern-y-Genau Farm (Upper face).
50k map sheet Corwen (120)

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Map reference SH 28505 33970
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


E32382

Cross Polarized, E32382

Plane Polarized, E32382

Plane Polarized, E32382