BGS mineralogy and petrology collection record

Sample number	E63338; COLLNOKB338;
Sample Donor	Not entered
Rock name	Rhyodacite. 'Original entry: Feldspar Porphyry Composite'
Stratigraphy	Not entered
Comments	From 4m acid centre of comp sill as KB337(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=
Locality details	Bwlch y rhydd
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 6658 4586
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.