Crystal of Sanidine embedded in a matrix of volcanic ash, very marked by degassing effects, displaying a very clean contact, slightly translucent, and coming from Santa Pau volcano in the La Garrotxa volcanic field in Catalonia. This specimen comes from the collection of Lluís Daunis, whose handwritten label with the obsolete name 'riacolita' we will send to the buyer. It is not easy to find pieces of this quality from this deposit.
Roca Negra Volcano, Santa Pau, Olot, Comarca Garrotxa, Gerona / Girona, Catalonia / Catalunya Spain
Specimen size: 4.0× 3.2 × 1.9 cm = 1.57” × 1.26” × 0.75”
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