| Locality type: | Island |
| Classification |
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|
| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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|
| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Nerroth island, Sein Island, Quimper, Finistère, Brittany, France |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1220799 |
| Long-form Identifier: | 1:3:1220799:8 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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|
|
| 1.9km (1.2 miles) | ⓘPlas ar Skoul, Sein Island, Quimper, Finistère, Brittany, France |
| 8.1km (5.0 miles) | ⓘPointe du Raz, Plogoff, Quimper, Finistère, Brittany, France |
| 9.7km (6.0 miles) | ⓘBestrée, Pointe du Raz, Plogoff, Quimper, Finistère, Brittany, France |
| 10.2km (6.3 miles) | ⓘPointe du Van, Cléden-Cap-Sizun, Quimper, Finistère, Brittany, France |
| 11.2km (6.9 miles) | ⓘFeunteun Aod Point, Plogoff, Quimper, Finistère, Brittany, France |
| 37.0km (23.0 miles) | ⓘTrégana beach alluvials, Trégana, Locmaria-Plouzané, Brest, Finistère, Brittany, France |
| 37.0km (23.0 miles) | ⓘBlancs Sablons beach alluvials, Le Conquet, Brest, Finistère, Brittany, France |
| 42.2km (26.2 miles) | ⓘRuscumunoc beach alluvial deposits, Ruscumunoc, Plouarzel, Brest, Finistère, Brittany, France |
| 47.8km (29.7 miles) | ⓘPenn ar Roc'h - Porz an Ejen area, Ushant, Brest, Finistère, Brittany, France |
| 48.1km (29.9 miles) | ⓘRocher du Crapaud beach alluvials, Lanildut, Brest, Finistère, Brittany, France |
| References |
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|
Barrière, M., Chauris, L., Fouquet, Y., Guilcher, A., Lefort, J.-P., Pelhate, A. (1985): Notice explicative de la feuille Pointe du Raz à 1/50000, B.R.G.M., Editions du Service géologique national, p. 11. |
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