BGS mineralogy and petrology collection record

Sample number	E10918; COLLNO319;
Sample Donor	Blake,Professor
Rock name	'Original entry: Gwna Green-Schist:Silicified'
Stratigraphy	Not entered
Comments	Palaeozoic Metasomatism. See Mem.Geol.of Anglesey.p.569. Original characters obscure.
Locality details	Road near Pen-yr-allt, Llanddona, Cambrian
50k map sheet	Llandudno (94) View images in GeoScenic related to 'Llandudno' View the geology near 'Llandudno'
Map reference	SH 575 803
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.