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Sample ids Donor Year Rock name
thin section E35407, COLLNODT66, Thomas,D. * Not entered 'Original entry: Haematitic Feldspathic Medium Sandstone'
250 Yds. at 248 deg. from Brookhouse Bridge, 1 mile SE. of Denbigh.
thin section E35408, COLLNODT67, Thomas,D. * Not entered 'Original entry: Feldspathic Lithic Medium Sandstone'
200 Yds. W. at 30 deg, N, from Denbigh Railway Station. (Disused).
thin section E34871, COLLNODT50, Thomas,D. * Not entered 'Original entry: Dolomitic Limestone Mudstone'
Nant Mawr, S. bank of stream. (Loc 2).
thin section E34872, COLLNODT51, Thomas,D. * Not entered 'Original entry: Dolomitic Limestone Mudstone'
Nant Mawr, S. bank of stream. (Loc 2).
thin section S95148, COLLNOCYY71, Akhurst, M.C. * Not entered Sandstone (Undifferentiated). 'Original entry: Sandstone'
Outcrop, 200m N of Shepherds cairn to SE of Bishop Forest Hill
thin section S95149, COLLNOCYY72, Akhurst, M.C. * Not entered Sandstone (Undifferentiated). 'Original entry: Calcareous Sandstone'
Outcrop, 230m NE of communion stone near Skeach Hill
thin section S95150, COLLNOCYY73, Akhurst, M.C. * Not entered Sandstone (Undifferentiated). 'Original entry: Calcareous Sandstone'
Old quarry to S of Routin Bridge Wood
thin section S95151, COLLNOCYY74, Akhurst, M.C. * Not entered Sandstone (Undifferentiated). 'Original entry: Sandstone'
400m NW of Horse Bog Loch
thin section S95152, COLLNOCYY75, Akhurst, M.C. * Not entered Sandstone (Undifferentiated). 'Original entry: Sandstone'
Summit of Dalquhairn Hill
thin section E19780, MR17644, COLLNOAWW37, Woodland,A.W. * Not entered 'Original entry: Rhodonite, Manganese, Chlorite, Pyrolusite, Spessartine And Rhodocroisite'
Benallt manganese Mine (operated by Ministry of Supply 1942), Rhiw.
thin section E19781, MR17646, COLLNOAWW39, Woodland,A.W. * Not entered Basalt. 'Original entry: Albite-Dolerite'
550 Yds. N. by W. of Benallt Mine.
thin section E18356, COLLNO9, Bailey, Doctor. * Not entered 'Original entry: Contorted Phyllite With Quartz Veins Foliated And Recrystallized'
Durhos, N. of road, half a mile W. of Aberdaron.
thin section E18357, COLLNO10, Bailey, Doctor. * Not entered 'Original entry: Coarse Tuff'
Yr-Erw, Llanllawen.
thin section E18624, MR17341, COLLNOAWW1, Woodland,A.W. * Not entered 'Original entry: Collophane Nodules, Ore Quartz Ooliths In Base Of Black Ore, Red Mineral, Epidote And Quartz'
Manganese workings, Benallt, Rhiw.
thin section E18625, MR17342, COLLNOAWW2, Woodland,A.W. * Not entered 'Original entry: Ore Carbonate Rock'
Manganese workings, Benallt, Rhiw.
thin section E19533, COLLNOGROVES 1, Bailey, E.B. * Not entered 'Original entry: Oolitic Grit Of Pyrogenic Grains'
Shaft, 100 Yds. NW. of Capel Pisgoh.
thin section E19534, COLLNOGROVES 2, Bailey, E.B. * Not entered 'Original entry: Gritty,Oolitic, Chloritic Mudstone With Pebbles Of Collophanite'
Shaft, 100 Yds. NW. of Capel Pisgoh. 60-70 ft. down.
thin section E18351, COLLNO4, Bailey, Doctor. * Not entered 'Original entry: Shear Breccia Of Phyllite And Quartz Rock'
Just E. of aberdaron beach.
thin section E18352, COLLNO5, Bailey, Doctor. * Not entered 'Original entry: Mylonite Grit. Locally Flinty Crush'
Quarry, Tyddyn-Dafydd, Penrhyn, 1 mile E. of Aberdaron.
thin section E18353, COLLNO6, Bailey, Doctor. * Not entered 'Original entry: Sheared Gneiss'
Durhos, N. of road, half a mile W. of Aberdaron.

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