BGS mineralogy and petrology collection record

Sample number	E10306; COLLNO518; NEGM.1118;
Sample Donor	Greenly,E.
Rock name	'Original entry: Gwna Jasper (An.Mem.1931.P.138)'
Stratigraphy	Not entered
Comments	Associated with spilite. Mona Complex. Anal.Mem.1931.p.138.
Locality details	Cerig Mawr, "at photo place"
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 395 640
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.