BGS mineralogy and petrology collection record

Sample number	E10683; COLLNO84;
Sample Donor	Blake,Professor
Rock name	'Original entry: Hornfels'
Stratigraphy	Not entered
Comments	Mona Complex. Hornfels. See Mem.Geol.of Anglesey.p.332. ??? Foliation mica, indicating invasion of hornfels by Pen-Zone metamorphism.
Locality details	Nearest gneiss, Porth-y-[ty]Wod
50k map sheet	Caernarfon (105) View images in GeoScenic related to 'Caernarfon' View the geology near 'Caernarfon'
Map reference	SH 328 718
Year collected	Not entered
Bore name	Not applicable
Confidentiality	No restrictions

Petrological thin sections

Field of view: c. 31 mm.