BGS mineralogy and petrology collection record

Sample number	E10929; COLLNO10;
Sample Donor	Matley, C.A
Rock name	'Original entry: Spilite'
Stratigraphy	Not entered
Comments	see mem. Geology of Anglesey p 308 Slender Feldspars with tendancy to radial variolitic grouping in dull green matrix Ancient Dyke in crush conglomerate Mona Compl
Locality details	Twyn-y-Parc Cemmaes Bay Headland just S. of Largest Limestone
50k map sheet	Holyhead (93) View images in GeoScenic related to 'Holyhead' View the geology near 'Holyhead'
Map reference	SH 371 940
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.