BGS mineralogy and petrology collection record

Sample number E11055; COLLNO136;
Sample Donor Matley, C.A
Rock name 'Original entry: Spilite(Reconstructed)'
Stratigraphy Not entered
Comments Mona Complex. Gwna Beds. See Mem.Geol.of Anglesey.pp.283-4. Chlorite, albite, etc. variolitic texture surviving..Ter?albite also ? tuff seam. ? Old dyke. Perhaps a contract of dyke & s
Locality details Lane W.of Foel-Llanrhyddlad.
50k map sheet Holyhead (93)

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Map reference SH 306 900
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


E11055

Cross Polarized, E11055

Plane Polarized, E11055

Plane Polarized, E11055