BGS mineralogy and petrology collection record

Sample number E18100; COLLNOM217;
Sample Donor Matley, C.A
Rock name 'Original entry: Pebbly Grit, Slaty Matrix'
Stratigraphy Not entered
Comments Slaty conglomerate at Menevian Base
Locality details Foel Ddu; 600 yds NW of Tn y Llwyn
50k map sheet Harlech (135)

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Map reference
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


E18100

Cross Polarized, E18100

Plane Polarized, E18100

Plane Polarized, E18100