BGS mineralogy and petrology collection record

Sample number	E63272; COLLNOKB272;
Sample Donor	Not entered
Rock name	Rhyodacite. 'Original entry: Feldspar Porphyry Composite'
Stratigraphy	Not entered
Comments	15cm from contact with mudstone, no dolerite margin(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=Fine-grained
Locality details	Nant Mor/Croesor
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map near 'Snowdon'
Map reference	SH 6314 4510
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.