BGS mineralogy and petrology collection record

Sample number	E63341; COLLNOKB341;
Sample Donor	Not entered
Rock name	Rhyodacite. 'Original entry: Feldspar Porphyry Composite'
Stratigraphy	Not entered
Comments	Complex contact with dolerite, not for chemistry(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=
Locality details	LLyn Croesor
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 6613 4576
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.