BGS mineralogy and petrology collection record

Sample number	E63342; COLLNOKB342;
Sample Donor	Not entered
Rock name	Rhyodacite. 'Original entry: Feldspar Porphyry Composite'
Stratigraphy	Not entered
Comments	From centre of comp intrusion, as for KB340-341(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=Flow-banded
Locality details	LLyn Croesor
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map 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.