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RM2938 Cronstedtite and smithsonite

Brunita open pit, Sierra Minera de Cartagena-La Unión, La Peraleja, La Unión, Murcia, Spain

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The Corta Brunita (open pit), in Murcia, is a classic of Spanish mining and mineralogy. This sample shows various globular aggregates of cronstedtite, formed by small crystals with triangular terminal faces. They are disposed on a matrix with smithsonite.

Size: 9.4 x 5 x 3 cm.
Main crystal: 14 mm. glob. agr.
Found in ±2015.

Col. M. Marí - A. García (Castelló)

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RM1049 Cronstedtite

Brunita open pit, Sierra Minera de Cartagena-La Unión, La Peraleja, La Unión, Murcia, Spain

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Cronstedtite is a rare iron silicate of the kaolinite-serpentine group. This is a good representative of the cronstedtite specimens from this classic Spanish mine. It shows a lustrous, black, trigonal crystals forming groups on the matrix. It is a rare oportunity to get good specimens of this species.

Size: 5.0 x 3.8 x 3.5 cm.
Main crystal: 8 x 4 mm (aggr).

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