BGS mineralogy and petrology collection record

Sample number	E10678; COLLNO79;
Sample Donor	Blake,Professor
Rock name	'Original entry: Quart Mica Rock'
Stratigraphy	Not entered
Comments	Highly stained Quartz in a confused ill-foliated micaceous matrix Palaeozoic Prob. Peru Zone
Locality details	S. of stream N. of Llangwyllog: locality vague
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 435 799
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.