BGS mineralogy and petrology collection record

Sample number	E10694; COLLNO95;
Sample Donor	Blake,Professor
Rock name	'Original entry: Jasper In Limestone'
Stratigraphy	Not entered
Comments	Mona Complex. Gwna Beds. See Mem.Geol.of Anglesey.p.351. Quartz & haematite. Complicated spherulitic structures
Locality details	S.of Cerig Ceinwen
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 427 735
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.