BGS mineralogy and petrology collection record

Sample number	E27869; MR21513; COLLNO40;
Sample Donor	Road Research Laboratory
Rock name	'Original entry: Muscovite, Biotite Microgranite'
Stratigraphy	Not entered
Comments	Roadstone.
Locality details	Castle-An-Dinas Quarry, Ludgvan.
50k map sheet	Penzance (351) View images in GeoScenic related to 'Penzance' View the geology near 'Penzance'
Map reference	SW 484 347
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.