BGS mineralogy and petrology collection record

Sample number E64252; COLLNOKB1252;
Sample Donor Not entered
Rock name Tuff. 'Original entry: Acid Airfall Tuff'
Stratigraphy Not entered
Comments As KB 1251, a few tens of cms. above base.(GROUP= Nantmor Group)(FORM= Cwm Eigiau Fm.)(MEMB= .)(IE=E)(TEXTURE=Very fine-grained, siliceous, flinty.
Locality details Near footpath to north of Pinnacles, Capel Curig
50k map sheet Bangor (106)

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Map reference SH 7248 5819
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


Cross Polarized, E64252

Plane Polarized, E64252

Plane Polarized, E64252