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Hydroboracite
Main crystal size: 3 Ă— 0.7 cm
(Autor: Jordi Fabre)

Kohnstein Quarry, Niedersachswerfen, Nordhausen District, Thuringia/ThĂĽringen, Germany
Hydroboracite
Main crystal size: 3 Ă— 0.7 cm
(Autor: Jordi Fabre)

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