| Locality type: | Mine |
| Classification |
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| Species: | Goethite |
| Formula: | α-Fe3+O(OH) |
| Habit: | botryoidal and stalactitic crusts |
| Colour: | Various shades of yellow to red-brown and black |
| Quality for species: | Poor for species, only of interest for locality collectors. (#) |
| Abundance at site: | Very common |
| Confirmation |
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|
| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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| Mineral Data: | Click here to view Goethite data |
| Locality Data: | Click here to view Frongoch Mine (Bron-y-Goch Mine; Llawynwnwch Mine), Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 39774 |
| Long-form Identifier: | 1:3:39774:8 |
| GUID (UUID V4): | d9aff6db-218e-4182-87b0-6d0dfd2c5e6d |
| Nearest other occurrences of Goethite |
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| 5.9km (3.6 miles) | ⓘMynach Vale Mine (Ty Gwyn Mine; De Broke Mine), Devil's Bridge, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK |
| 6.1km (3.8 miles) | ⓘLlwyn Llwyd Mine, Ysbyty Ystwyth, Ceredigion, Wales, UK |
| 8.3km (5.2 miles) | ⓘBwlchrhennaid Mine (Level Newydd Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK |
| 8.6km (5.4 miles) | ⓘCastell Mine (Dyffryn Castell Mine; New Castell Mine; West Esgair Lle Mine; Gwaithddu Mine; Cripiau Bach Mine), Ponterwyd, Cwmrheidol, Ceredigion, Wales, UK |
| 9.7km (6.0 miles) | ⓘDaren Mine (Old Daren Mine; Darren Consolidated Mine; Daren United Mine; Great Darren Mine; Darren Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK |
| 10.1km (6.3 miles) | ⓘGwaith Yr Afon mine (West Cwmsymlog Mine; Cwm Daren Mine; River Mine; Taliesan Mine), Goginan, Trefeirig, Ceredigion, Wales, UK |
| 10.9km (6.8 miles) | ⓘLletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion, Wales, UK |
| 11.2km (6.9 miles) | ⓘLlechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK |
| 13.5km (8.4 miles) | ⓘCamdwrmawr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK |
| 13.6km (8.5 miles) | ⓘBryn-yr-Afr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK |
| References |
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