BGS mineralogy and petrology collection record

Sample number MR23399
Sample Donor Collins,G.H.
Rock name 'Original entry: Dolerite'
Stratigraphy Ordovician. Ordovician.
Comments ? Dolerite from dyke intrusive into Slate. NGR as in register.
Locality details Quarry name: not recorded: at Gilfach Qry. 3/4 ml N 80 deg E of Llangolman Church Pembrokeshire
50k map sheet Fishguard (210)

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Map reference SN 129 269
Year collected 1960 
Bore name Not applicable
Confidentiality No restrictions