| Locality type: | Mine |
| Classification |
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| Species: | Muscovite |
| Formula: | KAl2(AlSi3O10)(OH)2 |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Clinochlore | 3 |
| Quartz | 2 |
| Tourmaline | 1 |
| Goethite | 1 |
| Data |
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| Mineral Data: | Click here to view Muscovite data |
| Locality Data: | Click here to view Penberthy Croft Mine, St Hilary, Cornwall, England, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1497347 |
| Long-form Identifier: | 1:3:1497347:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Muscovite |
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| 2.1km (1.3 miles) | ⓘCroft Gothal Mine, St Hilary, Cornwall, England, UK |
| 5.0km (3.1 miles) | ⓘTregonning Hill, Breage, Cornwall, England, UK |
| 5.3km (3.3 miles) | ⓘTrencrom Hill, Trencrom, Ludgvan, Cornwall, England, UK |
| 6.2km (3.9 miles) | ⓘSouth Wheal Providence (South Wheal Speed), Carbis Bay, St Ives, Cornwall, England, UK |
| 7.7km (4.8 miles) | ⓘMegiliggar Rocks (Tremearne pegmatite), Breage, Cornwall, England, UK |
| 8.0km (5.0 miles) | ⓘGreat Wheal Fortune, Breage, Cornwall, England, UK |
| 11.1km (6.9 miles) | ⓘRosemorran Mine (Rosevale Mine; Wheal Chance), Zennor, Cornwall, England, UK |
| 13.2km (8.2 miles) | ⓘDolcoath Mine, Camborne, Cornwall, England, UK |
| 13.7km (8.5 miles) | ⓘBassett & Grylls Mine (Porkellis Mine; Porkellis Tin Mines; Wheal Jantar; Balwath Mine), Porkellis, Wendron, Cornwall, England, UK |
| 13.9km (8.6 miles) | ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK |
| References |
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Penberthy Croft Mine, St Hilary, Cornwall, England, UK