BGS mineralogy and petrology collection record

Sample number	S46964; COLLNOYZ63;
Sample Donor	Berridge,N.G.
Rock name	'Original entry: Felsite'
Stratigraphy	Not entered
Comments	Branching dyke: chilled contact facies
Locality details	Nant Low Pressure Tunnel (HE 26), 1676 ft from intake portal
50k map sheet	Oban (45) View images in GeoScenic related to 'Oban' View the geology near 'Oban'
Map reference	NN 0029 2296
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.