BGS mineralogy and petrology collection record

Sample number E19778; MR17639; COLLNOAWW32;
Sample Donor Woodland,A.W.
Rock name Siltstone (Undifferentiated). 'Original entry: Chamosite, Pisolite With Chloritic Matrix.'
Stratigraphy Not entered
Comments Siltstone associated with specimen E 19776, with "pebble"of pisolitic material.
Locality details Old open trial workings for Ironstone, near cliffs, half a mile N.by W. of Trevor village; N. of Yr Eifl.
50k map sheet Nefyn (118)

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Map reference SH 371 474
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


E19778

Cross Polarized, E19778

Plane Polarized, E19778

Plane Polarized, E19778