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).

Size: 6,0 x 5,0 x 2,4 cm.
Found in 2014.

Globular aggregates formed by lamellar crystals of theisite. With a bluish to green color and brilliance. On a dolomite matrix. This mineral species is the second citation in Spain. Theisite is a rare copper and zinc arsenate-antimonate that has been described for the first time in this mine in the Catalan Pyrenees. Accompanied by several azurite, transparent, bright, well-defined and some doubly terminated. Also with botryoidal to stalactitic malachite aggregates. 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).

Size: 6,7 x 4,0 x 1,5 cm.
Main crystal: 0,5 mm (aggr)
Found in 2013.

Group of interpenetrated cubic fluorite crystals with violet tones and delicate color zoning, transparence in some crystals, most being translucent. Characteristic for fluorite of this mine are the corroded faces. They are disposed on a matrix of iron oxides. What I also would like to emphisize of this piece is the mine from which it comes, near Alumbres in Cartagena, not well represented in collections.

Size: 6,4 x 4,5 x 3,3 cm.
Main crystal: 13 x 12 mm.

Fluorescent under long wave UV

Group of interpenetrated pyritohedrons on matrix from a classic Spanish locality as Ambasaguas. Very sharp faces and edges, intense golden color and excellent luster. The perfection of the Rioja pyrites.

Size: 7,0 x 5,3 x 3,7 cm.
Main crystal: 14 x 13 mm.
Found in 2010.

A novelty in the Castelló mineral show 2014. This is a group of aragonite crystals showing very aesthetic flos ferry structures, with good brilliance and white color, slightly brownish tones at the terminal crystals. It comes from a Almerian mountains well known for its hot springs.

Size: 13,5 x 9,5 x 5,0 cm.
Found in 2014.

Fluorescent under long wave UV

A novelty in the Castelló mineral show 2014. This is a group of aragonite crystals showing very aesthetic flos ferry structures, with good brilliance and white color, slightly brownish tones at the terminal crystals. It comes from a Almerian mountains well known for its hot springs.

Size: 7,7 x 5,5 x 4,7 cm.
Main crystal: 20 x 5 mm (aggr).
Found in 2014.

Fluorescent under long wave UV

These crystals show astonishing sharpness of tetrahexahedron faces, together with the less developed cube. Crystals are uncolored (under halogen light) or slightly bluish (under fluorescent light), bright and completely clear and are scattered over an esthetic matrix of white crystals of barite. A high-quality specimen that belonged to the Silvane (Barcelona) collection.

Size: 6,6 x 5,5 x 2,7 cm.
Main crystal: 9 x 8 mm.
Found in 1995.

Ex-col. Silvane (Sr. Amigó).
Fluorescent under LW-UV and SW-UV lights

From a recent find in the Valentín open pit, we get these hemimorphite specimens showing aggregates of flattened prismatic crystals as aesthetic rosettes. They are partiallly filling cavities in the matrix. These samples have been analyzed and we will send a copy to the buyer.

Size: 7,5 x 3,5 x 2,5 cm.
Main crystal: 8 x 5 mm (aggr).
Found in 2014.

A piece with history. This is a specimen of elongated prismatic barite crystals with toasted honey tones and very good transparence. It shows very sharp prismatic and terminal faces. These specimens are uncommon in the market. It comes from the former Daunis (Barcelona) collection. Very representative.

Size: 7,0 x 4,5 x 4,0 cm.
Main crystal: 18 x 2 mm.
Found in ±1990.

Ex-col. Daunis (Barcelona).
Fluorescent under long wave UV

A very rich group of pyrite crystals forming a globular aggregate, very brilliant, with an intense color and hinting cubic faces. It is disposed very aerial on the matrix with rhombohedral calcite crystals and yellow fluorite. To increase its aesthetics a single calcite crystal has grown on the pyrite. A unusual specimen for this mine where pyrite is often found in small crystals coating the fluorite.

Size: 11,0 x 7,3 x 6,5 cm.
Main crystal: 3,7 x 3,0 cm (aggr).

From a recent find in the Valentín open pit, we get these hemimorphite specimens showing aggregates of flattened prismatic crystals as aesthetic rosettes. They are partiallly filling cavities in the matrix. These samples have been analyzed and we will send a copy to the buyer.

Size: 7,5 x 6,3 x 4,5 cm.
Found in 2014.

A very rich group of interpenetrated fluorite crystals with cubic forms with beveled edges by the dodecahedron. Very sharp and with a really intense color, that varies depending on the incident light, between blue-violet to purple. A high quality Spanish fluorite specimen, from my own collection.

Size: 5,0 x 4,7 x 3,5 cm.
Main crystal: 12 x 11 mm.

Ex-col. Joan Rosell.

This specimen shows a very rich group of small micaceous crystals of tyuyamunite, brilliant and intense yellow color, contrasting on the matrix. The piece was labeled as francevillite, but we have performed SEM-EDS analysis that refers to the tyuyamunite species. The results indicated the presence of uranium, calcium, vanadium, and few silicium, thus move away from the francevillite containing barium and lead, together with vanadium and uranium. Results will be send to the buyer. From a Spanish mine not well represented in collections.

Size: 6,0 x 4,7 x 3,5 cm.

Ex-col. Carbonell, nº 3169.
Fluorescent under long wave UV

Group of very sharp fluorite crystals with good transparence and brilliance, with a bluish color, well disposed very aerial on a barite matrix. We would like to emphisize the size of the main crystal and its good definition, showing perfectly tetrahexahedron faces with an interesting slight curvature. A classic from Asturies.

Size: 6,0 x 4,2 x 4,0 cm.
Main crystal: 24 x 23 mm.
Found in 2005.

Fluorescent under long wave UV

A very rich specimen of silver from a classic locality for the Catalan mineralogy. In this sample we could enjoy several groups of very sharp brilliant skeletal silver crystals. They are accompanied by acanthite aggregates of darker color. The specimen has been acidified with care since usually silver specimens become dark, but in this case, and looking at the date of collection, we can foresee a long stability. The label indicates that this material was mined in 1905, but the specimen was collected in 1998.

 

Size: 5,5 x 5,5 x 4,2 cm.
Main crystal: 4 x 1 mm.
Found in 1998.

In this specimen we can see some matrix cavities covered by botryoidal aggregates formed by wavellite crystals. Different layers of wavellite are observed. Its color is greenish yellow and more bluish in some areas by the presence of turquoise. They are partially covered by several small aggregates of lanceolate turquoise crystals (see photo) with a light blue color.

These wavellite and turquoise specimens have been analyzed by microprobe and we will send the results to the purchaser, with the SEM photograph of both species. Palazuelo de las Cuevas area is known worldwide for variscite, that were worked for making beads in the Neolithic period, it was 5.000 years ago.

Size: 6,5 x 5,6 x 5,0 cm.
Found in 03/2013.

In this specimen we can see some matrix cavities covered by botryoidal aggregates formed by wavellite crystals. Different layers of wavellite are observed. Its color is greenish yellow. They are peppered by small aggregates of turquoise crystals with a light blue color.

These wavellite and turquoise specimens have been analyzed by microprobe and we will send the results to the purchaser, with the SEM photograph of both species. Palazuelo de las Cuevas area is known worldwide for variscite, that were worked for making beads in the Neolithic period, it was 5.000 years ago.

Size: 8,5 x 6,0 x 3,8 cm.
Found in 03/2013.

In this specimen we can see some matrix cavities covered by botryoidal aggregates formed by wavellite crystals. Different layers of wavellite are observed. Its color is greenish yellow and more bluish in some areas by the presence of turquoise. They are partially covered by several small aggregates of lanceolate turquoise crystals (see photo) with a light blue color.

These wavellite and turquoise specimens have been analyzed by microprobe and we will send the results to the purchaser, with the SEM photograph of both species. Palazuelo de las Cuevas area is known worldwide for variscite, that were worked for making beads in the Neolithic period, it was 5.000 years ago.

Size: 7,0 x 5,5 x 4,5 cm.
Found in 03/2013.

A very particular quartz crystal that shows a very marked "window" growths (also called "skeletal") in the rhombohedron faces and with a short prism. Very good glassy luster. With inclusions those are very common in this type of quartz crystals. These specimens were collected near the Urrúnaga reservoir in Legutio. Nowadays it is near impossible find these specimens.

Size: 4,0 x 3,7 x 2,6 cm.
Found in ±2010.

Group of crystals, one of them clearly dominant, which shows a very marked "window" growths (also called "skeletal") in the rhombohedron faces. In the prism, underdeveloped, we can see echeloned to parallel growths. Excellent glassy luster. With inclusions those are very common in this type of quartz crystals. These specimens were collected near the Urrúnaga reservoir in Legutio. Nowadays it is near impossible find these specimens.

Size: 5,4 x 3,2 x 3,0 cm.
Found in ±2010.

Precio reducido-Reduced price 50€

Druse of cubic fluorite crystals with yellow color. With some transparence to translucent. On the crystals we can observe different baryte aggregates formed by tabular white crystals. This specimen is notable for its locality where it is uncommon to find this association. A sample for fluorite and/or Spanish classic localities.

Size: 10,5 x 7,4 x 3,5 cm.
Main crystal: 17 x 13 mm.
Found in 25/8/2013

Fluorescent under long wave UV

A floater. Group of interpenetrated cubic fluorite crystals with defined faces and beveled edges, and showing echeloned growths. Good brilliance, translucent and with color zoning between blue to violet, more intense in the crystal core and very intense in some edges. Accompanied with scalenohedral calcite crystals. A very aesthetic specimen with a good size. From a Spanish classic mine.

Size: 9,7 x 8,4 x 5,0 cm.
Main crystal: 65 x 53 mm.
Found in 2013.

These malachite specimens come from works those were carried out in the railroad called "Basque Y". During these works, some rocks containing this mineral were extracted. They show prismatic radial aggregates of deep green malachite with an exceptional brilliance. Crystals are flattened due to its growth in fissures. Some transparency could be observed. Its origin is due to alteration of the original chalcopyrite matrix, present as small but brilliant granules, accompanied by hematite. The fibrous shape, color and luster make them very aesthetic.

Size: 8,7 x 5,0 x 3,6 cm.
Found in 2012.

A very brilliant specimen of wavellite from the classic and historic locality of Palazuelo de las Cuevas, famous for the variscite. In this specimen we can observe perfectly banded wavellite aggregates formed by radiated crystals. The color varies between greenish yellow to deep green. We can see the terminal faces of the wavellite crystals in these aggregates. This sample is from a recent find and it has a quality not seen for a long time. We will send the analysis to the buyer.

Size: 5,8 x 3,4 x 3,0 cm
Found in 03/2013.

A very curious specimen of calcite with deformed and curved escalenohedron and rhombohedron faces. With some brilliance, yellowish color and translucent. Very aerial disposed on a matrix of dolomite peppered with pyrite.

Size: 7,6 x 5,0 x 3,0 cm.
Main crystal: 16 x 16 mm.
Found in 2008.

Precio reducido-Reduced price 40€
Fluorescent under long wave UV