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En route pour la conférence des Reichenbach Irregulars à Leukerbad, j'ai fait une brève étape à Lausanne.
Faute de temps pour visiter le Palais de Rumine, je me suis concentrée sur la collection de minéralogie dont j'avais gardé un agréable souvenir.
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Le musée possède un morceau de 120 kg de la météorite de Gibeon, qui contient 90 % de fer et 8 % de nickel. C'est l'un des plus gros fragments retrouvés, depuis le début de la collecte qui a commencé en 1838.
La météorite évaluée à 27 tonnes est tombée dans le sud de la Namibie à une date inconnue. Les alvéoles se sont formées lors de l'échauffement au contact de l'atmosphère.
Les fragments de la météorite sont connus depuis plusieurs siècles par les Namaquas, peuple de pasteurs d'Afrique australe, qui s'en servent pour fabriquer des flèches et d'autres outils.
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Pegmatite recueilli au Brésil
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Je termine la visite dans la galerie des roches fluorescentes. La lumière y alterne avec l'obscurité pour montrer leurs propriétés.
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Table en sel gemme - Mine de Slanic en Roumanie, où les couches de sel atteignent plusieurs dizaines de mètre d'épaisseur