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EXPO MINERAL

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Serpierite with Aurichalcite

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SV2220TLX

Double crust formed by a covering of bluish Aurichalcite crystals completely covering a limonitic rock on which was partially deposited a large group of very fine acicular Serpierite crystals with bluish green hues.
The specimen is from the type locality for Serpierite.

Serpieri Mine, Kamariza Mines, Lavrion Mining District, Attikí (Attica) Prefecture Greece

Specimen size: 4.8 x 2.4 x 1.4 cm

Type locality

Cassiterite

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SV290TRM

Floater crystal of Cassiterite with a very distinct “tin peak” twin, with well defined and lustrous faces and edges, some of them with grooves and truncations at the vertices.
The specimen comes from a historic mining district that covered the border area between Saxony, in Germany, and Bohemia, in the current Czech Republic, exploited for tin and tungsten since the end of the Middle Ages.

Zinnwald/Cinovec, Krusné Hory Mountains, Erzgebirgskreis, Saxony/Sachsen Germany

Specimen size: 2.5 x 1.8 x 1.4 cm