BGS mineralogy and petrology collection record

Sample number	E63447; COLLNOKB447;
Sample Donor	Not entered
Rock name	Dolerite (Synonymous With Microgabbro). 'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Dyke, 100m from W contact against rhyolite(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=
Locality details	Yr Arddu, Cefn y cerrig
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View the geology near 'Snowdon'
Map reference	SH 6717 5509
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.