BGS mineralogy and petrology collection record

Sample number	S46733; COLLNOYR397;
Sample Donor	Smith,D.I.
Rock name	'Original entry: Porphyrite, ?Hornfelsed'
Stratigraphy	Not entered
Comments	Porphyrite dyke, ?hornfelsed
Locality details	Main tunnel, 8466 ft from portal (HE 26)
50k map sheet	Oban (45) View images in GeoScenic related to 'Oban' View the geology near 'Oban'
Map reference	NN 0905 3170
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.