BGS mineralogy and petrology collection record

Sample number	MR21631
Sample Donor	Chaperlin,K.
Rock name	'Original entry: Slate'
Stratigraphy	Ordovician. Ordovician.
Comments	Dark grey Slate. NGR as in register.
Locality details	Quarry name: not recorded: at Disused Qry. 200 yd NW of Four Crosses, 2.7 ml SW of Amlwch Church
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 418 898
Year collected	1958
Bore name	Not applicable
Confidentiality	No restrictions