Very good specimen of galena formed by a large group of crystals with complex shapes and a visible spinel twin. They are disposed on a small matrix.

 

Size: 5.6 x 5 x 4.3 cm.
Main crystal: 3.5 cm.

Specimen of harmotome from a nowadays inactive Finnish lead mine: Korsnäs. On a matrix covered by very brilliant and well defined fluorapophyllite-(K) crystals with a greenish yellow color, we can observe some groups of aesthetic harmotome crystals, well faceted and interpenetrated among them. They show a pearly luster. Nowadays, these specimens are difficult to get.

Size: 8.5 x 6.5 x 4 cm.
Main crystal: 9 mm.
Found in ±1977.

Col. Joan Astor (Barcelona).

This specimen is a fine sample of harmotome from the Bellsgrove quarry in Scotland, a locality that has produced excellent pieces of this zeolite. On a calcite matrix with honey to greenish tones, several richly faceted crystals of harmotome are disposed. Between transparent and translucent, and of a remarkable size for the species. Exploitation of a notable baryte vein (Strontian Main) destroyed the Middleshop mines and was renamed as Strontian Barytes Mine, now called as Bellsgrove Quarry. It is accompanied by the seller's label.

 

Size: 8 x 4.7 x 4.7 cm
Main crystal: 10 mm.

Ex. Erich Laskowski col.

Specimens of magnetite from Cerro Huañaquino were well known decades ago, but today it is not easy to find them, and even less with the quality of this specimen that we propose. It is a druse of very bright octahedral crystals with an intense black colour that are disposed on the rocky matrix.

Size: 8.9 x 5 x 3.5 cm.
Main crystal: 7 mm.

Specimens of magnetite from Cerro Huañaquino were well known decades ago, but today it is not easy to find them, and even less with the quality of this specimen that we propose. It is a druse of very bright octahedral crystals with an intense black colour that are disposed on the rocky matrix.

 

Size: 7.8 x 6.8 x 2.8 cm.
Main crystal: 1.5 cm.

Very curious specimen of agate from this classic Argentine locality that shows us the characteristic botryoidal shapes that have been slightly polished to show us the beauty of this semiprecious stone. This specimen belongs from the Trigo collection (Mataró) and was acquired at the Mineralexpo Barcelona-Sants mineral show, in Barcelona, decades ago.

Size: 5.2 x 4.8 x 2.3 cm.
Found in ±2007.

Col. Trigo (Mataró, Catalunya)

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.

Size: 9.6 x 7 x 3.4 cm.
Main crystal: 6 mm.

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.

Size: 7.8 x 6.4 x 2.1 cm.

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.

Size: 6.8 x 5.3 x 1.9 cm.

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.

Size: 8.9 x 6.6 x 5.2 cm.
Found in 02/2022.

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.

 

Size: 9.2 x 5.8 x 4.5 cm.
Found in 02/2022.

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.

Size: 7.3 x 5.5 x 4.7 cm.
Found in 02/2022.

The Sant Fost willemite appears in small crystals with a pseudohexagonal prismatic habit (twinned), with striated faces. All of them are sub-millimetric in size and form druses of crystals with a resinous or adamantine luster, with colors ranging from dark brown to honey-yellow, or they may appear colorless and transparent. In Sant Fost the willemite appears associated to a sphalerite vein together with silicates (quartz and clays), calcite, fluorite, and baryte. Willemite is fluorescent under SW-UV light. Very unusual locality for the species.

Size: 3.8 x 1.7 x 0.9 cm.
Found in 2021.

Con análisis / With analytical report
Fluorescent under short wave UV

This is one of the few samples obtained in our last studies in this quarry. We saw a mica-like platy crystals, with a pearly luster and hexagonal form. The results of the different analytical techniques indicated that it was surite (SEM-EDS, EPMA, XRD, Raman). It is accompanied by cerussite, fluorite (purple), baryte and galena.
Surite is a very rare species based on a cerussite-like layer intercalated with a 2:1 layer of smectite. Can Rovira is the second locality in Europe and one of the few localities worldwide.

Size: 3.9 x 3.7 x 2.5 cm.
Found in ±2020.

Analyzed specimen with report

Fehrite is a recent new species found in Almeria (Spain). Some years ago (2012) we identified this species in the Les Ferreres mine (Camprodon) but unfortunatelly we didn't have enough sample to finish detrmination and structural studies. Recently we found some more samples and the characterization was carried out based on the results obtained from the application of various analytical techniques: SEM-EDS, Raman and X-ray diffraction. Les Ferreres mine is the second locality worldwide for the species. We will send all reports to the buyer.
In this Catalan mine, fehrite appears as elongated elongated tabular to fibrous crystals, with a delicate bluish-green tone, and fibrous terminations. Usually, it is accompanied by devilline (blue) and brochantite (green). It is the magnesium analogue of ktenasite.

Size: 2.9 x 2.1 x 0.8 cm.
Found in ±2019.

Analyzed specimen with report

Fehrite is a recent new species found in Almeria (Spain). Some years ago (2012) we identified this species in the Les Ferreres mine (Camprodon) but unfortunatelly we didn't have enough sample to finish detrmination and structural studies. Recently we found some more samples and the characterization was carried out based on the results obtained from the application of various analytical techniques: SEM-EDS, Raman and X-ray diffraction. Les Ferreres mine is the second locality worldwide for the species. We will send all reports to the buyer.
In this Catalan mine, fehrite appears as elongated elongated tabular to fibrous crystals, with a delicate bluish-green tone, and fibrous terminations. Usually, it is accompanied by devilline (blue) and brochantite (green). It is the magnesium analogue of ktenasite.

Size: 1.4 x 1.2 x 0.8 cm.
Found in ±2019.

Analyzed specimen with report

Although it is a massive specimen, we can see the pyrrhotite with bronze luster with inclusions of black magnetite. It is not a very common species for the locality. It belongs from the Astor collection. For Spanish locality collectors.

Size: 5 x 4.2 x 3 cm.
Found in ±1985.

Col. Joan Astor (Barcelona).
Classic locality

Very good sized specimen of cyclically twinned aragonite. It belongs from the Manchion collection.

Size: 6 x 5.2 x 5.2 cm.
Found in ±1991.

Col. Manchion (Barcelona).

A specimen from this classic locality in Malaga where groups of pyrite crystals have been totally replaced by goethite (limonite). A Spanish reference.

Size: 8.8 x 5 x 2.8 cm.
Main crystal: 2.3 cm.
Found in ±1991.

Col. A. Arguijo (L'Hospitalet de Llobregat, Barcelona).
Classic locality

Specimen of Mexican banded opal. An old piece from the Manchion collection acquired in 1991.

Size: 5.9 x 4 x 2.3 cm.
Found in ±1991.

Col. Manchion (Barcelona).

Rich group of lanceolated hemimorphite crystals, thick, very brilliant and transparent. With calcite and on a goethite matrix. A classic of this Mexican mine.

Size: 7.9 x 5.5 x 4.4 cm.
Main crystal: 9.2 mm.
Found in ±1988.

Col. Manchion (Barcelona).
Classic locality

Excellent specimen, with a good size, of granatite with vugs filled by epidote crystals, on which olive green fibrous aggregates of uralite stand out. The most remarkable are several well-formed crystals of scheelite, a species difficult to find locally, highly fluorescent under short-wave UV. It belongs from the Manchion collection and it was acquired from Joan Viñals in 1990.

Size: 6.9 x 6.8 x 4.8 cm.
Main crystal: 3.2 mm. sch.
Found in ±1990.

Col. Manchion (Barcelona).
Fluorescent under short wave UV

Very old specimen from Ojuela mine. It presents various globular aggregates of chrysocolla, sprinkled with small crystals of hemimorphite and bluish needles of aurichalcite. Under the magnifying glass is very interesting. From the Trigo collection (Mataró).

Size: 5.4 x 5.3 x 3.9 cm.
Found in ±1980.

Col. Trigo (Mataró, Catalunya)
Classic locality

Group of cubic fluorite crystals, brilliant, transparent and yellow in color with zoning. Fluorescent under LW-UV light, with an interesting zoning. Dotted with small pyrite crystals and rhombohedral calcite. From this classic Asturian mine.

Size: 6.5 x 4.4 x 3.5 cm.
Main crystal: 1 cm.
Found in ±1991.

Col. Manchion (Barcelona).
Fluorescent under long wave UV

Divergent aggregates of aragonite crystals, very aesthetic, brilliant and transparent to translucent. They are disposed on a matrix with goethite. Aragonite specimens from Lavrion are prized by collectors for their aesthetics.

Size: 8.5 x 6.7 x 5.5 cm.
Main crystal: 1 cm.
Found in ±1990.

Classic locality