BGS mineralogy and petrology collection record

Sample number	E64428; COLLNOTL59;
Sample Donor	Not entered
Rock name	Dolerite (Synonymous With Microgabbro). 'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Dyke intruding Bronllwyd Grit Formation(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=
Locality details	SE end of Llyn Peris
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View a geological map near 'Bangor'
Map reference	SH 5980 5874
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.