BGS mineralogy and petrology collection record

Sample number	E63034; COLLNOKB34;
Sample Donor	Not entered
Rock name	Dolerite (Synonymous With Microgabbro). 'Original entry: Dolerite'
Stratigraphy	Not entered
Comments	Thick sill intruded into Cwm Eigiau Fm.(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=Coarse, ophitic
Locality details	S bank, Nant Llyn y Foel
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map near 'Snowdon'
Map reference	SH 7168 5472
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.