BGS mineralogy and petrology collection record

Sample number	E9895; COLLNO107; NEGM.1093;
Sample Donor	Greenly,E.
Rock name	'Original entry: Spilite (Variolitic)'
Stratigraphy	Not entered
Comments	See Mem.Geol.of Anglesey.p.74 & Pl.V.fig.1:p.72. Anal.Mem.1931.p.83. Lava, prob.pre-cambrian boss.
Locality details	Boss NW.of Bryn Llwyd Newborough Dumas
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 396 645
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.