BGS mineralogy and petrology collection record

Sample number	S28901; COLLNODH2027;
Sample Donor	Haldane,D.
Rock name	'Original entry: Porphyrite, Thermally Altered'
Stratigraphy	Not entered
Comments	Basic igneous intrusion
Locality details	Burn of Hardwall, near foot
50k map sheet	Central Shetland (128) View images in GeoScenic related to 'Central Shetland' View the geology near 'Central Shetland'
Map reference	HU 376 698
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.