BGS mineralogy and petrology collection record

Sample number	E64349; COLLNOKB1349;
Sample Donor	Not entered
Rock name	Rhyolite. 'Original entry: Rhyolite (Gamallt)'
Stratigraphy	Not entered
Comments	Loose block. XR PM 1(GROUP= )(FORM= )(MEMB= .)(IE=)(TEXTURE=Brecciated
Locality details	Cwm Penmachno - stream section
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map near 'Snowdon'
Map reference	SH 7507 4664
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.