BGS mineralogy and petrology collection record

Sample number	E11043; COLLNO124;
Sample Donor	Matley, C.A
Rock name	'Original entry: Selvage Of Dolerite Dyke'
Stratigraphy	Not entered
Comments	Palaeozoic Intrusions. See Mem.Geol.of Anglesey.p.524-5. Porphyritic basalt with ?. Glassy(?) Margin fluidal. Junct.of basalt & Llanfechell ??????
Locality details	South of Groes-Fechan
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 351 916
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.