Good size... Globular groups formed by lamellar crystals of theisite, with a bluish to green color on a matrix of dolomite. It is accompanied by crusts of claraite crystals, of an intense turquoise blue. Also with azurite and manganese oxides, probably asbolane. Analysis results will be sent to the buyer.
Theisite is a rare copper and zinc arsenate-antimonate that has been described for the first time in this mine in the Catalan Pyrenees. Claraite is a rare copper and zinc carbonate which may contain sulfur and/or arsenic. These mineral species are the second citation in Spain.