GORCEIXITE avec RUTILE, carrière de Lengenbach, Fäld Binn Goms, Valais, SUISSE (micro et miniature)
Un spécimen très rare et ancien provenant de la carrière de Lengenbach.
GORCEIXITE, BaAl 3 (PO 4 )(PO 3 OH)(OH) 6
Blanc, incolore, vert ou brun, peut être moucheté ; incolore à la lumière transmise.Nommé en 1906 par Eugen Hussak en l'honneur de Claude Henri « Henri » Gorceix (1842, Saint-Denis-des-Murs, Haute-Vienne, France - 6 septembre 1919, Paris, France), professeur à l'École des Mines de Paris, France. Invité à être le premier directeur de l'École des Mines d'Ouro Preto, Brésil (1874-1891).
L'utilisation d'un microscope ou d'une loupe grossissante 30x est recommandée pour observer les cristaux. Cet échantillon contient également de la lengenbachite et d'autres minéraux.
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