Druse formed by complex interpenetrated sphalerite crystals, with toasted honey color, some transparence and accompanied by calcite crystals. A huge size specimen from a classic Spanish locality.

On a thin limonite matrix we can enjoy two aggregates and aesthetic baryte rosettes formed by lenticular crystals are arranged. Both aggregates are complete, but one of them shows an unusual perfection. It comes from a mine known for its ocher tone barytes,but this shape is not very common in this mine.

A floating almandine crystal with a good size for the locality. Defined faces and rounded edges (very common), with an intense brown to black color. Acompanied by a interpenetrated minor almandine crystal. A Spanish classic.

A huge size andalusite prismatic crystal, with defined faces and rounded edges. A Spanish classic that many of us have told about and we present here for you.

Group of cubic fluorite crystals showing well defined faces and edges, with echeloned polysynthetic growth. Excellent transparence and blue to colorless depending on light source. On a quartz layered rocky matrix. A sample with characteristics that make it very interesting for fluorite collectors and from a classic Spanish locality.

Group of cubic fluorite crystals those show defined faces and edges with very interesting staggered polycrystalline growths. Its color varies from bluish violet to purple depending on the type of incident light. Good transparency showing us some color zoning. An aesthetic specimen from a classic Asturian locality.

On a milky quartz matrix we can enjoy some cubic fluorite crystals. One notable for its size. It shows transparency and color zoning. This color zoning is very interesting because it takes the form of an octahedron with an intense violet included in a colorless cube. It is not easy to find samples of fluorite from Cerro Muriano; so even a small dent in a corner, this piece is great quality for the locality.

Large group of cubic fluorite crystals showing well defined faces and edges. The yellow honey color, brilliance and transparency of the crystals give a very aesthetic touch to this piece. Viewed under magnification they are peppered by small globular aggregates of pyrite. It is accompanied by white dolomite.

Brilliant and elongated gold nugget that suggests rounded and flattened subhedric crystals. It belongs from an area known till the middle of last decade for its gold nuggets. The sample shows a good size. An opportunity to add a Spanish gold to your collection. Weight: 3.49 g. / 0,1231 oz.

Brilliant gold nugget that suggests rounded subhedric crystals and a surface with concavities. It presents quartz granules as inclusion. It belongs from an area known till the middle of last decade for its gold nuggets. The sample shows a good size. An opportunity to add a Spanish gold to your collection. Weight: 2.99 g. / 0,1055 oz.

Mamellonar aggregates of smithsonite crystals with a very nice orange to brown color covering cavities in the rocky matrix. From a recent find (2014, april) in one of the biggest "cortas" (quarry) of Portmán mining area.

Mamellonar aggregates of smithsonite crystals with a very nice orange to brown color covering cavities in the rocky matrix. From a recent find (2014, april) in one of the biggest "cortas" (quarry) of Portmán mining area.

A curiosity that I found aesthetic and mineralogically interesting. Usually the menilite opals are found in a marlstone matrix, but in this case we found it included in gypsum with clay inclusions. A Spanish curious specimen...

Good size sulfur crystal from a classic Spanish locality, but a not well-known outcrop. It shows very well defined faces and edges, good brilliance and an excellent canary yellow to slightly orange color. Disposed and protected in a vug vovered by calcite crystals. A fine Spanish sulfur specimen.

A classic Spanish specimen not easy to find today. These crystals from Ariño were collected many years ago and today it is really difficult to find them as mines have been abandoned. This specimen belongs to a private collection and the owner extracted it in the 90s.
Crystal stands by its size, transparency and carbonaceous inclusions. In certain areas it shows forms of natural redisolution.

Group of water-clear gypsum crystals, one of them dominant and with a good size. They show a magnificent luster and transparency and very well defined edges and faces. Disposed very aerial on a white alabaster matrix covered by small gypsum crystals. In this specimen we can observe a marked swallowtail twin in one of the crystals and defined terminal faces in others. Very interesting and representative for the best display.
Under short and long wave ultraviolet light sources these specimens show intense fluorescence and long live phosphorescence. Selenite specimens from Fuentes de Ebro quarries have been considered the best ones worldwide.

Group of water-clear gypsum crystals, one of them dominant, near to doubly terminated and with a good size. They show a magnificent luster and transparency and very well defined edges and faces. Disposed very aerial on a white alabaster matrix covered by small gypsum crystals. In this specimen we can observe phantom growths in the main crystal and a marked swallowtail twin. Very interesting and representative.
Under short and long wave ultraviolet light sources these specimens show intense fluorescence and long live phosphorescence. Selenite specimens from Fuentes de Ebro quarries have been considered the best ones worldwide.

Group of water-clear gypsum crystals, one of them dominant and with a good size. They show a magnificent luster and transparency and very well defined edges and faces. Disposed very aerial on a white alabaster matrix covered by small gypsum crystals. In this specimen we can observe some phantom growths in the main crystal and a marked swallowtail twin. Very interesting and representative.
Under short and long wave ultraviolet light sources these specimens show intense fluorescence and long live phosphorescence. Selenite specimens from Fuentes de Ebro quarries have been considered the best ones worldwide.

A very rich group of galena crystals, very bright, with good size, interpenetrating between them and showing cube and octahedron faces. They are partially covered by brilliant crystals of sphalerite with honey color and transparency to black and opaque. They are disposed on a matrix with pyrrhotite. An exceptional piece for this classic Spanish locality.

Excellent specimen of fluorite with an intense color and well defined faces and edges. It shows polycrystalline cubic growths with a color that varies between violet to purple depending on the light, with geometric color zoning. It is accompanied by quartz crystals.

Cobaltkoritnigite specimens from this mine are the first report of this mineral in Spain. It appears forming globular aggregates with a deep pinkish red with erythrite (pink color). Under the electronic microscope we can observe that these globules are composed by tabular crystals. It is a cobalt with zinc arsenate and belongs to the koritnigita group (zinc arsenate). In this mine has been found at low levels. Analysis results will be sent to the buyer.
We have published a book called "Rocabruna i el seu entorn. La mina de les Ferreres" where you could enjoy all species collected and determined until the date of publication (2014).

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Excellent and very rich specimen of theisite where we can observe several globular clusters formed by lamellar crystals with an intense blue-green color contrasting with the azurite. This mineral species from this mine is the second citation in Spain. Analysis results will be sent to buyer. This is a rare arsenate-antimonate of copper and zinc has been described in this mine in the Pyrenees.
We have published a book called "Rocabruna i el seu entorn. La mina de les Ferreres" where you could enjoy all species collected and determined until the date of publication (2014).

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Radial aggregates of acicular tyrolite crystals grown in the fissures of the barite matrix. Characteristic bluish green color and good luster. Analysis results will be sent to buyer. Accompanied by botryoidal malachite and sprays of acicular aragonite.

We have published a book called "Rocabruna i el seu entorn. La mina de les Ferreres" where you could enjoy all species collected and determined until the date of publication (2014).

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Radial aggregates of acicular tyrolite crystals grown in the fissures of the barite ore. Characteristic bluish green color and good luster. Analysis results will be sent to buyer.

We have published a book called "Rocabruna i el seu entorn. La mina de les Ferreres" where you could enjoy all species collected and determined until the date of publication (2014).

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Excellent groups formed by lamellar crystals of claraite, of an intense turquoise blue, on a matrix of dolomite and sulphides. It is accompanied by spheric aggregates of theisite crystals, with a bluish to green color. Also with azurite. Analysis results will be sent to the buyer.
Claraite is a rare copper and zinc carbonate which may contain sulfur and/or arsenic. Theisite is a rare copper and zinc arsenate-antimonate that has been described for the first time in this mine in the Catalan Pyrenees. These mineral species are the second citation in Spain.
We have published a book called "Rocabruna i el seu entorn. La mina de les Ferreres" where you could enjoy all species collected and determined until the date of publication (2014).

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