BGS mineralogy and petrology collection record

Sample number	E26662; COLLNOAA87;
Sample Donor	Archer,A.A.
Rock name	'Original entry: Coarse Ophitic Olivine Dolerite'
Stratigraphy	Not entered
Comments	Coarsest variety
Locality details	Underground exposure, Parc Mine, (Llanwyrst) No.3 Level, 290 yds. NW of W corner of Llyn Sarnau. Near middle of first dyke
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View the geology near 'Bangor'
Map reference	SH 774 592
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.