| Locality type: | Open-Cast Mine |
| Classification |
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| Species: | Calcite |
| Formula: | CaCO3 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Ankerite | 3 |
| Chalcopyrite | 2 |
| Data |
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| Mineral Data: | Click here to view Calcite data |
| Locality Data: | Click here to view Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 82047 |
| Long-form Identifier: | 1:3:82047:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Calcite |
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| 2.4km (1.5 miles) | ⓘDyffryn Cellwen coal workings, Onllwyn, Neath Port Talbot, Wales, UK |
| 17.1km (10.6 miles) | ⓘNeath Abbey Copper Smelter, Neath, Neath Port Talbot, Wales, UK |
| 19.4km (12.0 miles) | ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK |
| 20.9km (13.0 miles) | ⓘVaynor Quarry, Trefechan, Merthyr Tydfil, Wales, UK |
| 25.3km (15.7 miles) | ⓘBritannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK |
| 31.2km (19.4 miles) | ⓘMumbles Iron Mine, Oystermouth, Mumbles, Swansea, Wales, UK |
| 31.9km (19.8 miles) | ⓘTy Coch Mine, Porthcawl, Bridgend, Wales, UK |
| 33.4km (20.8 miles) | ⓘNantymwyn Mine (Cerrigmeyn Mine), Rhandirmwyn, Llandovery, Carmarthenshire, Wales, UK |
| 33.6km (20.9 miles) | ⓘLlanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK |
| 34.4km (21.4 miles) | ⓘTalachddu Mine, Talachddu, Felin-fach (Felinfach), Powys, Wales, UK |
| References |
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Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK