BGS mineralogy and petrology collection record

Sample number E61966; COLLNOMH1567;
Sample Donor Howells,M.F.
Rock name Quartz-Micromonzonite.
Stratigraphy Not entered
Comments Fine grained silicic tuff/rhyolite
Locality details Mynydd Pennant
50k map sheet Barmouth (149)

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Map reference SN 6652 1104
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


E61966

Cross Polarized, E61966

Plane Polarized, E61966

Plane Polarized, E61966