BGS mineralogy and petrology collection record

Sample number	S52644; COLLNOYR1299;
Sample Donor	Smith,D.I.
Rock name	'Original entry: ?Hornfelsed Porphyrite'
Stratigraphy	Not entered
Comments	?Hornfelsed porphyrite dyke
Locality details	Cruachan Main Tunnel, Chainage 10750 ft from outfall portal
50k map sheet	Oban (45) View images in GeoScenic related to 'Oban' View the geology near 'Oban'
Map reference	NN 0969 3193
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.