BGS mineralogy and petrology collection record

Sample number E38328; MR31845; COLLNO43;
Sample Donor Oldershaw,D.
Rock name 'Original entry: Feldspathic, Lithic Greywacke'
Stratigraphy Not entered
Comments D.G.Oldershaw & A.Gough. Medium grained impure sandstone (silurian) Used as part of 1970's Roadstone Project
Locality details Tan-y-Graig Qy., 1ml. S.of Foel
50k map sheet Dinas Mawddwy (150)

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Map reference SJ 994 104
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


E38328

Cross Polarized, E38328

Plane Polarized, E38328

Plane Polarized, E38328