| Sample number |
MR24639; COLLNOKC1001; |
| Sample Donor |
Chaperlin,K.; Sanderson,R.W.; |
| Rock name |
'Original entry: Slate' |
| Stratigraphy |
Cambrian. Lower Cambrian.. Green Slate Group. |
| Comments |
Olive slate. NGR as in register. |
| Locality details |
Twll Llwyd Quarry, 550yds at 160deg from Singrig Chapel Tan-yr-allt and 2800yds at 115deg from Pen-y-groes Station which is 180yds W of Christ Church Pen-y-groes Caernarvonshire |
| 50k map sheet |
Nefyn (118)
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|
| Map reference |
SH 490 517 |
| Year collected |
1961 |
| Bore name |
Not applicable |
| Confidentiality |
No restrictions |
