BGS mineralogy and petrology collection record

Sample number	S52552; COLLNOYC1718;
Sample Donor	Mykura,W.
Rock name	'Original entry: Hornfelsed Sandstone (New Biotite And Hornblende)'
Stratigraphy	Not entered
Comments	Highly indurated flaggy sandstone, inclusion in diorite and granite
Locality details	Coast, 700 yd N of Culswick Broch
50k map sheet	Foula (125) View images in GeoScenic related to 'Foula' View a geological map near 'Foula'
Map reference	HU 253 453
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.