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Tourmaline<br />

Columbo-tantalite ?<br />

Texture : Microgrenue porphyroïde<br />

Autre : Taches gris-noir à éclat métallique (columbo-tantalite ?)<br />

Coordonnées : N 06°30'40,6" ; W 006°37'35,2"<br />

E.A03 - 02<br />

Nom : Pegmatite<br />

Composition : Quartz<br />

Feldspath<br />

Muscovite<br />

Oxydes<br />

Structure : Graphique hétérogranulaire<br />

Texture : Grossière (diam.

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