BGS mineralogy and petrology collection record

Sample number E63481; COLLNOKB481;
Sample Donor Not entered
Rock name Rhyodacite. 'Original entry: Feldspar Porphyry'
Stratigraphy Not entered
Comments Intrusion into Graianog Sandstones, see also KB480(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=
Locality details Y Garn
50k map sheet Snowdon (119)

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Map reference SH 5535 5270
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, E63481

Plane Polarized, E63481

Plane Polarized, E63481