| Locality type: | Quarry |
| Classification |
|---|
|
| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
|---|
|
| Validity: | Believed Valid |
| Data |
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|
| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Toullouarn quarry, Guissény, Brest, Finistère, Brittany, France |
| Data Identifiers |
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|
| Mindat Occurrence Record ID: | 1095659 |
| Long-form Identifier: | 1:3:1095659:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
|---|
|
|
| 5.3km (3.3 miles) | ⓘSaint-Egarec beach alluvials, Kerlouan, Brest, Finistère, Brittany, France |
| 10.2km (6.3 miles) | ⓘWrac'h island, Lilia, Plouguerneau, Brest, Finistère, Brittany, France |
| 13.9km (8.6 miles) | ⓘGuélet ar C'hoat, Plouguin, Brest, Finistère, Brittany, France |
| 29.2km (18.2 miles) | ⓘRocher du Crapaud beach alluvials, Lanildut, Brest, Finistère, Brittany, France |
| 34.6km (21.5 miles) | ⓘTrégana beach alluvials, Trégana, Locmaria-Plouzané, Brest, Finistère, Brittany, France |
| 34.6km (21.5 miles) | ⓘRuscumunoc beach alluvial deposits, Ruscumunoc, Plouarzel, Brest, Finistère, Brittany, France |
| 37.1km (23.1 miles) | ⓘBlancs Sablons beach alluvials, Le Conquet, Brest, Finistère, Brittany, France |
| 38.5km (23.9 miles) | ⓘPoul Morvan beach alluvials, Callot island, Carantec, Morlaix, Finistère, Brittany, France |
| 38.7km (24.0 miles) | ⓘPenn ar Waremm beach alluvials, Callot island, Carantec, Morlaix, Finistère, Brittany, France |
| 39.7km (24.7 miles) | ⓘIle Verte, Carantec, Morlaix, Finistère, Brittany, France |
| References |
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|
Marcoux, E., Chauris, L., Hallégouët, B., Guennoc, P., Thiéblemont, D., avec la collaboration de Guerrot, C., Cocherie, A., Marec, A., Marteau, P. (2004): Notice explicative de la feuille Plouguerneau à 1/25000, B.R.G.M., Editions du Service géologique national, p. 124. |
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