Sheet of palygorskite, fibrous, laminated, delicate and at the same time resistant, silky and soft, like no other mineral species. It comes from the Magaña area, in Soria, and was acquired by Emili Nicolau from Joan Viñals in 1999. A Spanish curiosity.

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Pyrolusite specimens from Sagides (Soria) are rare on the market. In this specimen we can see bright aggregates of fine prismatic pyrolusite crystals. They are partially covering a goethite matrix.

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