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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Tourmaline from
Roscoff-Bloscon harbour, Roscoff, Morlaix, Finistère, Brittany, France


Locality type:Construction Site
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 Roscoff-Bloscon harbour, Roscoff, Morlaix, Finistère, Brittany, France
Data Identifiers
Mindat Occurrence Record ID:1385764
Long-form Identifier:1:3:1385764:8
GUID (UUID V4):0
References
CHAURIS L., MARCOUX É. (1998) - Carte géol. France (1/50 000), feuille Saint-Pol-de-Léon (201). Orléans: BRGM. Notice explicative par L. Chauris, É. Marcoux, É. Le Goff, D. Thiéblemont, A. Carn et coll. (1998), p. 87.
 
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