| Locality type: | Mine |
| Classification |
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| Species: | Mattheddleite |
| Formula: | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Mattheddleite data |
| Locality Data: | Click here to view Esgair Mwyn Mine, Ysbyty Ystwyth, Ceredigion, Wales, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 39015 |
| Long-form Identifier: | 1:3:39015:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Mattheddleite |
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| 3.4km (2.1 miles) | ⓘHendre Felen Mine (Hendre quarry), Ysbyty Ystwyth, Ceredigion, Wales, UK |
| 6.1km (3.8 miles) | ⓘFrongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK |
| 15.8km (9.8 miles) | ⓘDaren Mine (Old Daren Mine; Darren Consolidated Mine; Daren United Mine; Great Darren Mine; Darren Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK |
| 17.2km (10.7 miles) | ⓘLlechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK |
| 19.1km (11.9 miles) | ⓘBwlch Glas Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| 20.1km (12.5 miles) | ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| 22.2km (13.8 miles) | ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| 92.7km (57.6 miles) | ⓘMachen quarry, Machen, Caerphilly, Wales, UK |
| References |
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