BGS mineralogy and petrology collection record

Sample number	E63499; COLLNOKB499;
Sample Donor	Not entered
Rock name	Dolerite (Synonymous With Microgabbro). 'Original entry: Dolerite Composite'
Stratigraphy	Not entered
Comments	No vesicles or epidote veins unlike KB498, see 497(GROUP= )(FORM= )(MEMB= .)(IE=I)(TEXTURE=M-g block in f-g
Locality details	Rhyd Ddu-Llechog
50k map sheet	Snowdon (119) View images in GeoScenic related to 'Snowdon' View a geological map near 'Snowdon'
Map reference	SH 5885 5400
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.