BGS mineralogy and petrology collection record

Sample number MR26475; COLLNODAN359;
Sample Donor Dangerfield,J.; Merriman,R.J.;
Rock name 'Original entry: Rhyolite'
Stratigraphy Ordovician. Ordovician.
Comments Flow banded rhyolite.. NGR as in register.
Locality details Quarry name: Greffyn quarry.: at 400 yds bearing 35 degrees from Tyn-y-coed and 750 yds due N of Bettws-y-coed railway station. Caernarvonshire
50k map sheet Bangor (106)

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Map reference SH 795 572
Year collected 1963 
Bore name Not applicable
Confidentiality No restrictions