| Locality type: | Mine |
| Classification |
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| Species: | 'Unnamed (Pb Silicate) ?' (not an IMA approved species) |
| Formula: | Pb, Si, O, H (?) |
| Comments: | Although the crystals from this mine have been confirmed as an unknown species, it is believed by S.Rust that it may turn out to be Steverustite since the original element analysis may have been incorrect. Having said that, although the specimen submitted for the steverustite paper did have minute crystals of a Pb silicate on it, the latter crystals were far too small to do any descriptive work. |
| Habit: | Lath-like |
| Colour: | White |
| Quality for species: | Good crystals or rich for species - important (!) |
| Abundance at site: | Very Rare |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Unnamed (Pb Silicate) ? 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: | 60563 |
| Long-form Identifier: | 1:3:60563:8 |
| GUID (UUID V4): | e1861b76-235a-457a-a11b-20bf3f4385a0 |
| Nearest other occurrences of Unnamed (Pb Silicate) ? |
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| 16.9km (10.5 miles) | ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK |
| References |
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Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK