BGS mineralogy and petrology collection record

Sample number MR26415
Sample Donor Dangerfield,J.
Rock name 'Original entry: Tuff'
Stratigraphy Cambrian. Arvonian.
Comments Green fine grained tuff or mudstone.. NGR as in register.
Locality details Quarry name: Wern Fawr quarry.: at 800 yds bearing 225 degrees from Halfway Bridge. Caernarvonshire
50k map sheet Bangor (106)

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Map reference SH 600 689
Year collected 1963 
Bore name Not applicable
Confidentiality No restrictions