BGS mineralogy and petrology collection record

Sample number	E24143; COLLNORD2105;
Sample Donor	Road Research Laboratory
Rock name	'Original entry: Porphyritic Microgranite'
Stratigraphy	Not entered
Comments	Killas rock.
Locality details	Hingston Down Quarry, Gunnislake.
50k map sheet	Tavistock (337) View images in GeoScenic related to 'Tavistock' View the geology near 'Tavistock'
Map reference
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.