BGS mineralogy and petrology collection record

Sample number	S41964; COLLNOXN1221;
Sample Donor	Wright,J.E.
Rock name	'Original entry: Pale Grey Biotite Porphyrite'
Stratigraphy	Not entered
Comments	Pale grey biotite porphyrite, rather coarser than S. 41963; from central part of composite dyke of S. 41963
Locality details	Allt Coille-rais, 1810 yds E 2 deg N of of summit (2171 ft) of Sgor a' Pheanais
50k map sheet	Loch Eil (62) View images in GeoScenic related to 'Loch Eil' View the geology near 'Loch Eil'
Map reference	NN 2056 7621
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.