BGS mineralogy and petrology collection record

Sample number	MR24507; COLLNOKC819;
Sample Donor	Chaperlin,K.; Sanderson,R.W.;
Rock name	Not entered
Stratigraphy	Not entered
Comments	. NGR as in register.
Locality details	Quarry name: not recorded: at Ty'n Twll Disused Qry. 300 yd N of St. Cwyfan's Church, Porth Cwyfan
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View a geological map near 'Caernarfon'
Map reference	SH 336 685
Year collected	1961
Bore name	Not applicable
Confidentiality	No restrictions