Group of galena crystals with very rounded cube-ocathedral shapes and dotted with numerous brilliant sphalerite crystals with hexagonal very rare shape. Very curious.

Very rich specimen formed by numerous and brilliant pyrolusite crystals with a tabular appearance and forming globular growths. With Joan Viñals label.

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Group of good-sized sulphur crystals from a classic Spanish locality, but from a little-known mine, showing a great richness of faces, some brilliance and a canary yellow color. It is arranged in a cavity with calcite crystals. A fine Spanish specimen.

Without a doubt these are the best specimens of romanechite that have ever been found in Spain. These are botryoidal romanechite aggregates, shiny and very aesthetic. We will send the analysis to the buyer.

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Globular aggregates of prismatic baryte crystals, bright, defined, translucent and with a whitish color. A classic of Murcian mining.

Group of gypsum crystals, in parallel growth, with siderite inclusions. Open pit exploitation (corta) located next to the San Valentín corta. It belongs from the collection of Joan Astor.

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White to bluish globular aggregates of arsenocrandallite, accompanied by brown yukonite. These specimens were the first that Joan Viñals analyzed from this classic Murcian mine and that would lead to the discovery of the barahonaite (Al and Fe). With handwritten label.

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Aesthetic specimen that combines an upper part formd by goethite botryoidal aggregates, with a semi-matt luster, and a lower part with stalactitic growths of manganese oxides. They are accompanied by hematite of intense red color and baryte. A very interesting specimen from "la Sierra de la Unión".

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Rich aggregates of yuanfuliite needle like crystals, with orange-red color. They are accompanied by globular and brilliant calcite, hematite and yellow color richterite/fluoro-richterite and diopside sharp crystals. From this classic Spanish locality.

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The Corta Brunita (open pit), in Murcia, is a classic of Spanish mining and mineralogy. This sample shows various globular aggregates of cronstedtite, formed by small crystals with triangular terminal faces. They are disposed on a matrix with smithsonite.

These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanèchite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

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Rich aggregate of tabular baryte crystals, brilliant, defined and between translucent to transparent on the edges. From a classic locality for the Spanish mineralogy.

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Rich specimen formed by several aggregates of thick pseudo-hexagonal baryte crystals, with luster, white to yellowish colour, that stand out on a matrix of goethite. The baryte specimens from this Spanish mine are highly prized by collectors. This specimen belongs from the former J. Astor collection (Barcelona). With old labels.

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Showy specimen in the form of divergent stalactitic aggregates, with a patina of manganese oxides on the back side. Aerial and good sized. A very curious piece of this mine from Murcia.

Very aerial crystal of gypsum of this classic Murcian locality. It stands out for its transparency, brightness and for visible and aesthetic inclusions. The "matrix" is formed by a group of crystals of the same species. Not usual in the market.

A very notable specimen for the size of the pyrolusite sharp crystals, which form brilliant aggregates. In some areas they are partially covered by small botryoidal aggregates of goethite, black and very bright. A place under the magnifying glass.

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This specimen shows an interesting group formed by a bluish, very bright botryodal chalcedony, which is partially covered by aggregates of calcite crystals, flattened, in axial growth, and with an excellent transparency and brightness. A worthy specimen of this near to disapeared quarry, close to the San Valentín quarry. A very aesthetic piece of this classic Murcia mining area.

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Good specimen formed by various manganese oxides, with tabular crystals of pyrolusite forming brilliant rosettes, on botryoidal aggregates of romanèchite-pyrolusite. A good old piece. Acquired by Sr. Manchion in the former minerals fair held in 1985 in L'Hospitalet de Llobregat, close to Barcelona.

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These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanèchite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

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These specimens of orange-colored baryte are a classic of the mineralogy of the La Unión-Cartagena area. This piece stands out for the intense brightness and a marked color zoning, which shows banded zoning on the tabular crystals, those form aesthetic rosettes. Very elegant specimen.

A rich group of baryte crystals, with staggered stalactite growths, intense white, with defined faces and edges and forming a very displayable and aesthetic "crest". Really good size.

A rich group of baryte crystals, with staggered stalactite growths, intense white, with defined faces and edges and forming a very displayable and aesthetic "crest". A Spanish classic, different from the usual.

45 €

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These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanechite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

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These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small todorokite/romanechite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer. Good size.

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From a find in the area of La Celia mines. This crystal is very rich in faces, doubly terminated, gem quality, very brilliant and with an excellent transparence. It is accompanied by numerous other smaller crystals. This locality is located in La Celia volcano where we find remains of a volcanic neck (chimney) and streams from Pliocenic age (1.8-5 million years). These mines have a special geological interest, as they contains an exceptional locality for fluorapatite in the volcanic rock "jumillite". Jumillite is a volcanic rock of the lamproite group, a variety of phonolitic leucitite, consisting essentially of diopside and leucite and, to a lesser content, by olivine, alkali feldspar and phlogopite.