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Tourmaline from
Gwernavalou Quarry, Trémargat, Guingamp, Côtes-d'Armor, Brittany, France


Locality type:Quarry
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Gwernavalou Quarry, Trémargat, Guingamp, Côtes-d'Armor, Brittany, France
Data Identifiers
Mindat Occurrence Record ID:198789
Long-form Identifier:1:3:198789:8
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
18.1km (11.3 miles) ⓘBellevue Quarry, Saint-Gelven, Bon Repos sur Blavet, Guingamp, Côtes-d'Armor, Brittany, France
27.5km (17.1 miles) ⓘConveau quarry, Gourin, Pontivy, Morbihan, Brittany, France
47.0km (29.2 miles) ⓘChrist quarry, Ploumilliau, Lannion, Côtes-d'Armor, Brittany, France
47.0km (29.2 miles) ⓘPont-Kerlann stream alluvial deposits, Trégourez, Châteaulin, Finistère, Brittany, France
47.4km (29.4 miles) ⓘLes Godelins beach alluvials, Étables-sur-Mer, Binic-Etables-sur-Mer, Saint-Brieuc, Côtes-d'Armor, Brittany, France
47.8km (29.7 miles) ⓘSaint-Laurent-de-la-Mer beach alluvials, Plérin, Saint-Brieuc, Côtes-d'Armor, Brittany, France
49.2km (30.5 miles) ⓘL’Hôtellerie beach alluvials, Hillion, Saint-Brieuc, Côtes-d'Armor, Brittany, France
50.4km (31.3 miles) ⓘPont-Ar-C'hleudic stream alluvial deposits, Quilien, Tourch, Quimper, Finistère, Brittany, France
51.1km (31.8 miles) ⓘPoul Rodou beach alluvials, Poul Rodou, Locquirec, Morlaix, Finistère, Brittany, France
51.2km (31.8 miles) ⓘGoaslagorn, Trébeurden, Lannion, Côtes-d'Armor, Brittany, France
References
Germain, C., Guillou, A. (1985) Minéraux des druses du granite de Quintin. Le Cahier des Micromonteurs 8(2), 3-7
Germain C., Guillou A. (1988), Le Cahier des Micromonteurs, n°3, 3-7
 
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