A classic between classics of our country. This is a druse of fluorite crystals those, at first glance, seem just octahedra, but if you take a look carefully you will see vertices truncated by cube. Some crystals show parallel growth and other are interpenetrated. Good transparence and exceptional green color. Acompanied by small quartz crystals.
This specimen belongs to the "old" fluorites from Berta quarry, from an area of ​​sericitized granodiorite. In the fractures, if it was enough space, they grew lining the walls. When quarry worked lower levels fluorite appeared in fresh granite matrix, but mostly without this depth of color. A great specimen.

A very rich mottramite specimen formed by a layer of minute crystals, very brilliant and with a deep olive green color, near to black on druses, visible only in isolated crystals. A really representative specimen from a classic Spanish gold mines locality.

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Tabular celestite crystal with a good size and very defined faces and edges. Very aerial disposed on the matrix. Excellent transparence and brilliance. During many years these crystals were characterized as barite, but later studies showed that they were celestite. From a classic Spanish mine.

Curious aggregate of sphalerite crystals formed by several crystals of this sulfur, good brilliance, with sharp faces and edges and some transparence. Very aesthetically disposed on a matrix of white rhombohedral dolomite crystals. From a former German collection. Different than usual.

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In this specimen we can observe different groups of pyromorphite crystals showing hexagonal prisms, some of them truncated by the pinacoid and others more acute. The green tone is presented in some crystals with good transparence and color zoning, while others are almost colorless.
In the town of Munébrega were worked some mines where sulphosalts were exploted. Currently they are collapsed. A specimen from a not common Spanish locality.

Group of huge size orthoclase crystals, showing the complex faces of the baveno twin together with complex prisms and false rhombohedrons. Nice slightly orange color and defined edges and faces. It is accompanied by small crystals of light green clinozoisite, some quartz and limonitized pyrite. It was collected many years ago near of the Montseny massif; this area was well known for orthoclase mineral collectors. A classic from a classic collection. Mr. Daunis and Mrs. Ruscalleda (wife) collection were specialized in Spanish quartz and orthoclase specimens.

In this specimen we can observe some groups of native copper crystals, with defined faces and edges, good luster and color. They are disposed on a black layer of pyrolusite and accompanied by some white to translucent calcite flattened rhombohedral crystals. These specimens were collected in a concrete areas of this mine.

Although our country is rich in different forms of calcite, we want to emphasize on this specimen that shows two generations of crystal growth. The first generation calcite clusters have a good size and orange to yellowish pastel tones. With an elongated striated prism and rhombohedral terminal top forms. They are translucent and brilliant, with echeloned growths on faces.
A second generation of small, but transparent and brilliant calcite crystals, is disposed near to perpendicular on the prism of the first generation. A colored and strongly fluorescent calcite from la Cala.

Calcite specimens from la Florida mines are known and valued worldwide. In this sample we have a complex twinned escalenohedron, "doubly terminated", with combination with the rhombohedron. Transparence is excellent, with defined striated faces and delicate edges. It has a delicate yellow to orange tone. In this specimen we can see, in the rear, the contact with the dolomite matrix where crystal had growth and an exfoliation, that does not affect the aesthetics of the sample.
These specimens appeared accompanied by pink dolomite, at level 6 of this mine. On one side there is a hoppered cavity in which it was disposed another group of crystals. A huge size and excellent specimen from this classic Spanish locality.

A very rich group of fluorite crystals with a good size and defined faces and rounded beveled edges. The faces show polysynthetic growths those give it a curious echelonesd forms and accompanied by complex redissolution structures. Really interesting. The color is intensely violet, deep in the inner parts of the crystal and clearer in the outer ones. Good brilliance and transparence when the light strikes on them. A specimen of the past times, rarely seen nowadays. It belonged to an old German collection. Col. Nr. 7.

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Group of very sharp fluorite crystals from this classic of the Spanish mineralogy. We can see the cube forms, with defined edges and faces. With clear geometric color zoning, between purple to violet depending on the incident light, more intense in the crystal core. A specimen of fluorite which collector should not miss.

Scolecite and aerinite specimens from this small Aragonese town are known worldwide. This specimen shows groups of acicular prismatic crystals those form globular aggregates which, when extracted, they allow us to see the radiated growths perfectly. Snowy white color and good luster. Samples of this quality are rare and less nowaday. Usually radiated aggregates appear very flat filling cavities into the dolerite rock.

Group of strontianite crystals with an elongated pyramidal habit, forming bundles and aggregates, with color between white to colorless. These specimens appeared in a concrete area of the mine Oriolana (Busot, Alicante) and initially were identified as aragonite or calcite. Further analysis indicated that this was strontianite with some calcium. It indicates that the crystals are zoned and its composition varies within the crystal. They were determined strontianita (majority), celestite, calcite with some quartz (probably due to mechanical mixtures). 

A brilliant quartz crystals from a well known Catalan area, in the Pyrenees, very appreciated for the quality of its hyaline crystals. A rich group of quartz crystals showing a elongated prism and developed and deformed rhombohedral terminal faces. Transparence and brilliance are excellent, with very well defined faces and edges. They are partially covered by small aggregates of pyrophyllite, between colorless to slightly yellow, with some goethitized pyrite. These specimens usually occur in geodes and it is very common find them falled down inside the vug; this specimen shows that one of the crystals has been lost, without affecting the beauty of the whole. This huge size sample is a nice representative of the known Llavorsí's quartz crystals.

A brilliant quartz crystals from a well known Catalan area, in the Pyrenees, very appreciated for the quality of its hyaline crystals. A rich group of quartz crystals showing a elongated prism and developed and deformed rhombohedral terminal faces. We also observe some of them doubly terminated, highlighting one of them because of their size. Transparence and brilliance are excellent, with very well defined faces and edges. They are partially covered by small aggregates of pyrophyllite, between colorless to slightly yellow, with some goethitized pyrite. No damage. This sample is a nice representative of the known Llavorsí's quartz crystals.

Botryoidal aggregate of hydrozincite of white color, with yellow and bluish tones. We can observe different layer growths and radiated structures in fracture zones. It comes from a Basque very wide mining area not well represented, in this species, in collections.

Group of bluish fluorapatite crystals, showing well defined faces and edges. Some of them show defined prism and even hexagonal pyramid faces. Although the site is known, it is not easy to find samples on matrix with a good size and luster ... and on matrix, because it is very easy, when you work them, that crystals fall out. They are transparent to translucent with nice color zoning, more intense in the center of the prism. They are usually accompanied by quartz. In this sample we have a very nice crystal doubly terminated very aerial disposed on the quartz.

Group of bluish fluorapatite crystals, showing well defined faces and edges. Some of them show defined prism and even hexagonal pyramid faces. Although the site is known, it is not easy to find samples on matrix with a good size and luster ... and on matrix, because it is very easy, when you work them, that crystals fall out. They are transparent to translucent with nice color zoning, more intense in the center of the prism. They are usually accompanied by quartz.

Group of bluish fluorapatite crystals, showing well defined faces and edges. Some of them show defined prism and even hexagonal pyramid faces. Although the site is known, it is not easy to find samples on matrix with a good size and luster ... and on matrix, because it is very easy, when you work them, that crystals fall out. They are transparent to translucent with nice color zoning, more intense in the center of the prism. They are usually accompanied by quartz. In this specimen we have a huge size crystal (8 mm) with prism faces, but not complete on terminal ones and smaller one (3 mm), defined and rich in faces.

Group of fluorite crystals with an intense luster, violet tones with color zoning more intense in the crystal core and geometric in faces. They show polysynthetic growths on faces that give them a particular shape. With some minor damages on some edges, but overall aesthetic. The sample is from an old German collection. A Spanish classic.

Group of very sharp interpenetrated fluorite crystals, with cubic faces showing echeloned forms. The violet-purple color is very intense, but when light passes through them it shows transparence and color zoning, intense in the external faces of the crystal and slight green tones inside. Good luster.
This specimen, that comes from an old German collection and was collected in the mid-80 in the mining area of ​​La Collada, is very distinctive and it isn't easy to see similar in the mineral market. Its color and disposition make it very atractive to fluorite collectors. A  former classic specimen from Asturias.

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Brilliant fribrous aerinite aggregates, with a blue color with greenish tones. Usually aerinite from this classic locality is layering fissures in the dolerite rocky matrix. In this sample, the development of the fibers and its luster make it an excellent representative for the species. From a classic Spanish locality.

Group of very sharp cerussite crystals showing a reticulated growth, like a star or a snowflake, with good brilliance. Very aerial disposed. These specimens belong to a chance finding that yielded a few specimens of this quality. From the well-known mining area of Tharsis.

Group of very sharp cerussite crystals showing a reticulated growth, like a star or a snowflake, with good brilliance. Very aerial disposed. These specimens belong to a chance finding that yielded a few specimens of this quality. From the well-known mining area of Tharsis.

Group of very sharp cerussite crystals showing a reticulated growth, like a star or a snowflake, with good brilliance. Very aerial disposed on a stalactite goethite. These specimens belong to a chance finding that yielded a few specimens of this quality. From the well-known mining area of Tharsis.