BGS mineralogy and petrology collection record

Sample number E54285; COLLNOFU79;
Sample Donor Fletcher, Chris J.N
Rock name 'Original entry: Tuff'
Stratigraphy Not entered
Comments Sheared quartz crystal tuff.
Locality details 330 m. at 159 deg. from Mynydd Cilgwyn.
50k map sheet Nefyn (118)

View images in GeoScenic related to 'Nefyn'

View the geology near 'Nefyn'

Map reference SH 4987 5399
Year collected Not entered 
Bore name Not applicable
Confidentiality No restrictions

Petrological thin sections

Links to high resolution images

Transition from XPL to PPL light


E54285

Cross Polarized, E54285

Plane Polarized, E54285

Plane Polarized, E54285