BGS mineralogy and petrology collection record

Sample number	E26872; COLLNOAA100;
Sample Donor	Archer,A.A.
Rock name	'Original entry: Dolomitic? Tuffaceous Mudstone'
Stratigraphy	Not entered
Comments	Contact Diabase - Tuffaceous Mudstone
Locality details	Llanwyrst Lead Mine, Inclined Borehole No.12. 265 yds. S36E of Parc Villa
50k map sheet	Bangor (106) View images in GeoScenic related to 'Bangor' View the geology near 'Bangor'
Map reference	SH 787 598
Year collected	Not entered
Bore name	Llanwyrst No.12
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.