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Biotite from
Keranvel, Guiscriff, Pontivy, Morbihan, Brittany, France


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
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Keranvel, Guiscriff, Pontivy, Morbihan, Brittany, France
Data Identifiers
Mindat Occurrence Record ID:1032849
Long-form Identifier:1:3:1032849:1
GUID (UUID V4):0
Nearest other occurrences of Biotite
32.8km (20.4 miles) ⓘKerbizien, Poullaouen, Châteaulin, Finistère, Brittany, France
38.1km (23.7 miles) ⓘLe Gouffre, Huelgoat, Châteaulin, Finistère, Brittany, France
40.8km (25.3 miles) ⓘGwernavalou Quarry, Trémargat, Guingamp, Côtes-d'Armor, Brittany, France
44.9km (27.9 miles) ⓘSpernec Point, Primiture, Groix, Lorient, Morbihan, Brittany, France
76.7km (47.7 miles) ⓘPoul Morvan beach alluvials, Callot island, Carantec, Morlaix, Finistère, Brittany, France
77.6km (48.2 miles) ⓘPenn ar Waremm beach alluvials, Callot island, Carantec, Morlaix, Finistère, Brittany, France
77.9km (48.4 miles) ⓘIle Verte, Carantec, Morlaix, Finistère, Brittany, France
80.9km (50.3 miles) ⓘFeunteun Aod Point, Plogoff, Quimper, Finistère, Brittany, France
82.1km (51.0 miles) ⓘPointe du Van, Cléden-Cap-Sizun, Quimper, Finistère, Brittany, France
82.3km (51.1 miles) ⓘBestrée, Pointe du Raz, Plogoff, Quimper, Finistère, Brittany, France
References
Chauris, L. (2014) Minéraux de Bretagne [Minerals of Brittany]. Les Editions du Piat. 336pp.p.305
 
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