This specimen is from my old field trips to the El Molar (Tarragona) area. In this sample we combine rhodonite (more granular appearance, crystalline) with pyroxmangite (more compact appearance). Accompanied by black veins of todorokite. The tephroite, scarce, appears as patches of brownish tone in the manganese oxydes. These differentiations rhodonite-pyroxmangite are indicative, both minerals usually appear mixed.

It is an old mine we call generically as Serrana mine, although in fact there are two different mines, with two separate dumps, one corresponding to the actual Serrana mine (with horizontal works), while the other (closest to the river and with vertical works) would be known as Manganese mine.

This specimen is from my old field trips to the El Molar (Tarragona) area. In this sample we combine rhodonite (more granular appearance, crystalline) with pyroxmangite (more compact appearance). Accompanied by black veins of todorokite. The tephroite, scarce, appears as patches of brownish tone. These differentiations rhodonite-pyroxmangite are indicative, both minerals usually appear mixed.

It is an old mine we call generically as Serrana mine, although in fact there are two different mines, with two separate dumps, one corresponding to the actual Serrana mine (with horizontal works), while the other (closest to the river and with vertical works) would be known as Manganese mine.

Only a handful of localities those offer us this quality coquimbite crystals. In this specimen we can enjoy a hexagonal shape crystal of this rare iron and aluminium sulfate showing an intense violet color under fluorescent light or LED type. It is accompanied by numerous yellow metavoltine crystals, along with fibrous halotrichite. Note that under the magnifying glass we can navigate in a world of brilliant crystals, some of which of krausite species (yellowish to grey transparent). We left this identification pleasure to the collector. Regarding its environmental stability, this sample has been stored during more than five years without further alteration.

This is a specimen of tabular barite crystals, colorless to yellowish tones and very good transparence. With minor marcassite on matrix. Stable till 1990's. These specimens are uncommon in the market. It comes from the former Daunis (Barcelona) collection. A piece with history.

In this huge size specimen we observe groups of tabular lenticular aggregates of barite with a delicate reddish tones, along with gray galena that has been almost completely substituted and covered by nice cerussite crystals. Taking a look under the microscope, cerussite shows long striated prisms terminated by pyramidal faces. Also note several cyclic star twins, well defined and spectacular. Different specimens from Mibladen.

The large mine of Les O is mined under the town of Mibladen. It has been worked during generations of miners in search of specimens, usually galena cerussite, barite and some wulfenite. Few weeks before my visit in February 2013 were found some mineralized veins and vugs with the specimens we offer. When those cavities were formed they had been filled by cube octahedral crystals of galena and barite. Due to the hydrothermal fluids galena was partially or totally corroded to favor the formation of cerussite.

Rich group of octahedral magnetite crystals with a good size. Brilliant, intense gray metallic tone and disposed very aesthetically on the rocky matrix. A classic that is hard to see on the market.

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A very uncommon species. It is an aluminum manganese silicate found in few localities worldwide. Specimens from Molinello mine are the best known. In this sample we observe a vein of sursassite with a coppery brown color, formed by many needle like crystals. In the quartz vug we can see perfectly formed crystals. The analysis will be sent to the buyer. A very good opportunity.

A floater aggregate of lanceolated sharp azurite crystals with a more than excellent color and luster. From a mine not well represented in collections.

A huge size rhodochrosite crystal with an intense red-pink color and well defined scalenohedral forms. Good color and transparence. On a solid rocky matrix with quartz.

From an not well-known Brazilian locality for the species, a colorful and aesthetic specimen formed by green malachite rosette-shaped pseudomorphs after azurite scattered over matrix of limonite. Good size and excellent shape.

In the matrix of goethite we observe several cavities covered by small brilliant crystals, gray metallic luster; once analyzed results indicated to be hydrohetaerolite. We discuss whether it is hetaerolita, but analysis carried by Joan Viñals indicated the hydrated form. Under the SEM-EDS, tetragonal dipyramids are observed. It is accompanied by calcite crystals and hemimorphite (tabular crystals in book shape). SEM-EDS analysis will be sent to buyer.

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This specimen shows a very well developed Coquimbite crystals, with an intense violet color. Matrix is formed by white fibrous halotrichite with some orange to yellow Mg-copiapite. Embeded in the halotrichite matrix some small doubly terminated krausite crystals. A complete specimen...

Druse formed by a rich group of cubic fluorite crystals with a yellowish tone, with geometrical zoning color, more violet in some outer edges. Noted for its definition. Translucent and dull luster. This deposit has some similarities with those of Asturias in Spain. A representative and quality specimen for this not well represented in collections French locality.

Globular aggregates with a really good sized formed by cavansite lanceolate crystals, with an intense blue color, brilliance and transparence. Very aerial and aesthetically disposed on the matrix covered by several small but transparent and brilliant stilbite-Ca crystals.

A rich group of azurite crystals partially replaced by malachite. Azurite crystals show tabular and lenticular shape forming rosettes, with an intense blue color. Malachite shows the shapes of the crystals of azurite those has been partially replaced and fibrous to acicular crystals with a delicate velvety aspect very aesthetic.

A good size crystal of teruelite, a variety of dolomite, from the Valencian cut in the CV-35 road well known for these sized specimens. The crystal shows the rhombohedron, brown and translucent under the light. It is included in a solid matrix of gypsum.

A very rich group of prismatic crystals, some almost acicular, of brochantite with an intense green colour and good brilliance and transparence. Nice to be displayed and enjoyed under magnifying glass. Disposed in the baryte cavities. SEM-EDS analysis results will be sent to the buyer.

A very rich group of prismatic crystals, some almost acicular, of brochantite with an intense green colour and good brilliance and transparence. Accompanied by groups of atacamite crystals with tabular shape and thicker prism, with a deep green color and transparence, easy to distinguish. Nice to be displayed and enjoyed under magnifying glass. SEM-EDS analysis results will be sent to the buyer.

Very rich druse of hyaline quartz crystals from a not very-known Spanish locality. Brilliant short prisms, with rich parallel growth, and nice terminal faces. With well defined faces and edges. From its quarries various rock typologies are extracted, the main and the most abundant is the granite characterized by its high hardness and quality, which was honored with a denomination itself, Grey Villa Granite.

Very interesting galena crystal, remarkable for its crystallography. It presents the cube and octahedron faces with a very balanced proportion. Brilliant, well disposed on a matrix with quartz crystals with an elongated prism an some brilliant pyritohedrons. A Peruvian aesthetic especimen.

Group of interpenetrated cubic fluorite crystals, brilliant and very transparent, with a delicate green color. Well defined faces and beveled edges by the dodecahedron. A brilliant specimen.

Excellent sphalerite miniature from this Basque classic mine. It shows a group of brilliant crystals, with a good size, defined faces and slightly curved edges. Good transparence with dark toasted honey-colored tones. Troya mine was closed in 1993, only a few years before these specimens were collected in 1990. Nowadays the mine is collapsed and flooded.

Large group of sphalerite crystals with an exceptional brilliance, honey color and transparency that allows light to play with the honey colors. Peppered by small crystals of calcite showing flattened shapes of the rhombohedral and prism. A little gemmy miniature. Troya mine was closed in 1993, only a few years before these specimens were collected in 1990. Nowadays the mine is collapsed and flooded.

Aesthetic specimen of this classic Basque mine that shows a matrix with numerous small sphalerite crystals, honey to orange color, transparent and brilliant. Partially covered by groups of rhombohedral siderite with a staggered growth. With good size, slightly curved faces and edges and very characteristic green color. A very aesthetic specimen.
Troya mine was closed in 1993, only a few years before these specimens were collected in 1990. Nowadays the mine is collapsed and flooded.

A very aesthtic combo of several species. On a matrix formed by two rhombohedral calcite crystals different sized aggregates of pyrite cubes, bright and sharp, with galena showing the spinel twinn. They are accompanied by a second generation of rombohedral and lenticular calcite crystals, pyrrhotite and quartz. A brilliant specimen from this classic European mine.