Nice speciemen of callaghanite, a rare copper and magnesium carbonate, with a very characteristic cobalt blue colour. It shows a druse formed by numerous crystals. Accompanied by small orange-brown aggregates of pokrovskite, together with globules of hydromagnesite. It is accompanied by the Joan Viñals handwritten label.

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A very rich specimen of getchellite, with laminar crystals in the matrix, brilliant and with a characteristic red wine colour, which differentiates it from realgar, which is bright red. It is accompanied by yellow orpiment. The formula for getchellite is AsSbS₃, and its type locality is this North American mine. From Frank Manus col. and Shannon & Sons label.

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Callaghanite is an very rare copper magnesium carbonate, known from only a few localities worldwide. This specimen has bright royal-blue microcrystals and hails from the Type Locality in Nevada. Good size and rich sample.

Curious specimen of turquoise, authentic turquoise, of a slightly greenish blue color, forming globular and elongated nucleus, in a matrix of goethite with other phosphates as possibly strengite. It is slightly polished which allows us to see perfectly the forms that the phosphate takes inside the matrix.

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