BGS mineralogy and petrology collection record

Sample number	S51679; COLLNOYR1114;
Sample Donor	Smith,D.I.
Rock name	'Original entry: Porphyritic Microdiorite'
Stratigraphy	Not entered
Comments	Porphyritic microdiorite dyke
Locality details	Loch Awe Project (HE26): Brander Tunnel, 4305 ft from outfall
50k map sheet	Oban (45) View images in GeoScenic related to 'Oban' View the geology near 'Oban'
Map reference	NN 0658 2828
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.