Interesting specimen due to the town where it comes from. It is a druse (both sides) of small, brilliant jarosite crystals from this small ballast quarry for railway tracks, located in the area known as "La Corraliza" to the NNE of the town of Vall d'Uixó. With old label from J. Viñals.

45 €

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This specimen belongs from a very rare location from an active quarry in Northern Ireland. It consists of a druse of white analcime with minor amounts of basalt as a matrix. Very unusual in the market. With an old label from Mikon.

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Globular aggregates of prismatic baryte crystals, bright, defined, translucent and with a whitish color. A classic of Murcian mining.

Group of gypsum crystals, in parallel growth, with siderite inclusions. Open pit exploitation (corta) located next to the San Valentín corta. It belongs from the collection of Joan Astor.

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In this specimen we can observe several cubic galena crystals, very brilliant and defined, with faces of the cube truncated by the octahedron. They are accompanied by complex sphalerite spinel twin crystals. Disposed on a matrix with quartz and lenticular calcite crystals.

Scalenohedral rhodo crystals with a whitish patina. They are accompanied by very brilliant hyaline quartz crystals.

Group of cubic fluorite crystals, with transparence that allows us to see the inner violet geometric zoning. Polysynthetic growths on faces. In matrix with baryte.

n this specimen of chalcedony we can observe, when light passes through it, the presence of a cavity partially filled with water of crystallization. This water was trapped in the process of formation of the geode, millions of years ago. A mineralogical curiosity.

Este ejemplar de fluorita de la cantera Berta nos muestra grupos de cristales pero también cristales aislados. La matriz es la granodiorita de color rojo "antigua" y se halla tapizada por diminutos octaedros de fluorita casi incoloros. Si algo hay que destacar de esta pieza es que los cristales octaédricos de fluorita muestran en los vértices las caras del rombododecaedro, del cubo y del tetraquishexaedro.

This specimen of fluorite from the Berta quarry shows us a group of crystals but also isolated crystals. The matrix is "old" red granodiorite and is lined by tiny, almost colorless fluorite octahedrons.

Radial aggregates of needle like erythrite crystals. They stand out from the goethite matrix.

Radial aggregates of needle like erythrite crystals. They stand out from the goethite matrix.

Radial aggregates of needle like erythrite crystals. They stand out from the goethite matrix.

Espécimen muy rico formado por numerosos agregados de cristales aciculares blancos (transparentes) de picrofarmacolita, acompañados de eritrita rosada rica en Mg (hörnesita), junto con farmacolita y sainfeldita. En matriz. Estos ejemplares fueron extraídos de la mina Bou Azer en febrero de 2018. Son muy estéticos bajo aumento, con buen tamaño para colección.

Radial aggregates of needle like erythrite crystals. They stand out from the goethite matrix.

This is a specimen of tabular barite crystals, colorless to yellowish tones and very good transparence. It belongs from the Mines d'Osor, currently closed and from which it is impossible to obtain these specimens. The mine closed in 1979 and had eleven levels, with a 290 meter deep shaft. You can still see the ruins of the old facilities and the well from which sphalerite, galena and fluorite were extracted and treated.

This is a specimen of tabular barite crystals, colorless to yellowish tones and very good transparence. It belongs from the Mines d'Osor, currently closed and from which it is impossible to obtain these specimens. The mine closed in 1979 and had eleven levels, with a 290 meter deep shaft. You can still see the ruins of the old facilities and the well from which sphalerite, galena and fluorite were extracted and treated.

A rich group of epidote crystals of a very good size and an intense green, almost black color. The crystals show very well defined prism faces of different orders. This crystal shape is quite unusual for this Moroccan locality.

Well-defined twinned microcline crystal from a very unusual locality, not seen in collections. It cbelongs from the collection of Peter Seroka, known for his interest in feldspars.

40 €

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Cerussite specimens from the Mibladen area are usually yellowish. In this specimen from the Seroka collection we can see very brilliant and transparent crystals and the largest ones are cyclically twinned. This type of specimen is not common in this area. It fluoresces weakly yellow under UV light.

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Group of tourmaline schorl crystals in parallel growth, with an intense black color and brilliance. With defined top terminal faces. It belongs from the collection of Peter Seroka (L'Escala, Catalonia).

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Excellent specimen of scolecite from a locality rarely seen in collections, located in the east of Iceland. It is a radiated aggregate of crystals, with an intense white color, luster and good size. A curiosity arrived from the cold lands.

Group of scalenohedral calcite crystals, transparent and allowing you to see internal growths (phantoms) of calcite sprinkled with pyrite. On the back numerous crystals of violet fluorite and dolomite. From this classic Asturian locality.

Excellent and aesthetic specimen formed by a large group of fluorite crystals, very well defined, with a cubic shape and beveled edges by the dodecahedron forms. Translucent, with purple zoning colour. They are disposed on a white calcite matrix, on which they contrast. A piece for the best display.

Botryoidal aggregates of smithsonite with a very tastefull bluish green colour, translucent and with brilliance. They are disposed on matrix. From a very interesting American locality. It fluoresces intensely under LW-UV light.