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Group of calcite crystals showing well defined edges and faces with rhombohedron and prism forms. Between translucent to transparent and disposed in a matrix of greenish-toned siderite. This specimen comes from col. Daunis. It is labeled as Somorrostro, but we think it can be associated with the mining zone associated to the Bilbao anticline, Gallarta-La Arboleda-Somorrostro. A Spanish classic. 484t5m