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RM3064   Thomsonite-Ca and analcime

Cyclopean Isles, Aci Trezza, Aci Castello, Catania, Sicilia, Italy

The Cyclopean Isles is a small volcanic archipelago off the coast of Aci Trezza, in the Etna volcanic complex. They are the type locality for the analcime species, which we can see in this specimen. This old time sample from the Freiberg Bergakademie shows us vacuoles with idiomorphic analcime crystals accompanied by colorless, well-defined thomsonite-Ca prisms those have grown on the analcime. The two labels give clear testimony to the antiquity of the specimen. A true mineralogical curiosity.

Size: 8.2 x 4.5 x 3.1 cm.
Main crystal: 2 mm.
Found in ±1860.

Freiberg Bergakademie
Type Locality

Price: 55 €Buy