| Locality type: | Mine |
| Classification |
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| Species: | Millerite |
| Formula: | NiS |
| Comments: | Acicular freegrown crystals to 5mm, and as embeded crystal to 5cms in massive sphalerite, with massive chalcopyrite. |
| Habit: | Acicular |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Quartz | 11 |
| Chalcopyrite | 4 |
| Goethite | 4 |
| Sphalerite | 2 |
| Pyromorphite | 1 |
| Jamborite | 1 |
| Data |
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| Mineral Data: | Click here to view Millerite data |
| Locality Data: | Click here to view Bryn-yr-Afr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK |
| Photo Gallery | View Gallery (8 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 39042 |
| Long-form Identifier: | 1:3:39042:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Millerite |
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| 0.9km (0.5 miles) | ⓘCamdwrmawr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK |
| 0.9km (0.6 miles) | ⓘHenfwlch Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| 1.6km (1.0 miles) | ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| 3.7km (2.3 miles) | ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| 4.9km (3.1 miles) | ⓘHyddgen Mine, Carn Hyddgen, Uwch y Garreg, Powys, Wales, UK |
| 8.9km (5.5 miles) | ⓘBrynarian Mine (Cardigan Bay Consols Mine), Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK |
| 9.2km (5.7 miles) | ⓘErglodd mine (Eurglawdd Mine), Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK |
| 15.9km (9.9 miles) | ⓘGwaithgoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK |
| 68.6km (42.6 miles) | ⓘDrws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK |
| 76.9km (47.8 miles) | ⓘNant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK |
| References |
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Bryn-yr-Afr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK