BGS mineralogy and petrology collection record

Sample number E63464; COLLNOKB464;
Sample Donor Not entered
Rock name Rhyodacite. 'Original entry: Feldspar Porphyry Composite'
Stratigraphy Not entered
Comments Same sill as KB465, 455 & 456(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=Coarse-grained
Locality details Rhydiau diwaunedd
50k map sheet Snowdon (119)

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Map reference SH 6822 5226
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, E63464

Plane Polarized, E63464

Plane Polarized, E63464