Clinohumite specimens from the Sierra de Mijas are a classic of Spanish mineralogy. These specimens are treated using chemical processes to make the crystals emerge in the marble matrix. They are accompanied by dark violet octahedral crystals of spinel. Clinohumite is a member of the humite group. It forms a continuous series with hydroxyclinohumite. The name "clinohumite" has commonly been used when the F/OH ratio has not been determined. Mijas is a magnesium skarn embedded in marble and pelitic gneiss, amphibolites and granulitic gneiss, in the contact zone with alpine peridotites-serpentinites (Sierra de Mijas).

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This rare specimen of stibnite has an ancient handwritten label attached indicating the San Pancracio mine in Ceuta. Searching for information about this mine we have found in MTI details of the work: “Síntesis geológica de Ceuta” by Simón Chamorro and Mercedes Nieto (1989) about this town. We reproduce here some of the details indicated in their work: "Next to Arroyo de las Bombas and near Fort Piniers, there is a deposit of antimonite (stibnite), known by the name of San Pancracio. The mineralization is associated with the contact between the warped limestones and the Carboniferous shales and sandstones; both types of rocks appear mineralized, although in the latter with more intensity the main control of the deposit is defined by a fault and a system of associated fractures from directions N 10º E to N 25º. E. [...] It was exploited by Fundiciones de Antimonio S.A. of Barcelona, from 1960 until March 1979, the year in which it was abandoned due to depletion of the main mineralized masses. Its production has been very small, a maximum of 135 t. in 1970, and an average grade of 45% [...] It presents a paragenesis of stibnite-quartz and carbonates, with traces of chalcostibine, galena, pyrite, chalcopyrite, chalcosine, covelline, brandsite and gold. Simón Chamorro Moreno, Mercedes Nieto García (1989): Síntesis geológica de Ceuta. Ceuta. ISBN: 84-87148-07-9.

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In this specimen we can enjoy several groups of wire silver, with showy wire to skeletal growths and metallic luster. Accompanied by black acanthite crystal aggregates. From a classic locality for the Catalan and Spanish mineralogy. A good chance to represent this locality in your collection. Nowadays it is very difficult find specimens, only from old collections...

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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Druse of small and brilliant vanadinite crystals. A curiosity for collectors of Spanish localities. With the Dr. Joan Viñals label.

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In this specimen, obtained in the Manzanera cemetery area, we can observe numerous calcite crystals with quartz, some hematite crystal and, hidden, a yellowish fluorapatite crystal, well defined and transparent. Unique specimen from a very little-known locality.

The specimens of hematite from the Sandra quarry, where dolerites (ophites) are exploited, are known by local collectors, but those extracted in the Manzanera cemetery area have not been as abundant and of high quality. This specimen comes from the Marí-García collection (Castelló) and was collected in 2000. The hematite crystals form isolated "leaves" that are very shiny and iridescent, unlike the quarry. Very aesthetic and unique specimen.

White globular aggregates of thomsonite-Ca, on the basaltic matrix. Excol. M. Marín de Castelló. A classic specimen of Spanish mineralogy.

This Leonese mine is near the Riaño reservoir. In this specimen we can see various radial aggregates of acicular prismatic stibnite crystals, with an intense luster and disposed in a calcite matrix that include them. In 1909 Spanish Mining Statistics, indicates the demarcation of 22 properties in this area with the name of "María Teresa" mine (document Nr. 3,260), of antimony, in the name of Policarpo Herrero, domiciled in Oviedo (FMF). A very fine and representative specimen.

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.

Druse of small, bright and defined descloizite crystals. The specimen from the Nicolau collection is accompanied by the handwritten label of Dr. Joan Viñals. It comes from the type locality for calderonite.

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Group of arsenopyrite crystals, very well defined faces amd edges and brilliant, from this classic Spanish mine. With yellowish scorodite. It belongs from the collection of Peter Seroka and it is accompanied by some labels.

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Laminar crystals of kyanite, with a bluish tone, from this deposit located on the road between Canillas del Aceituno and Sedella. This specimen belongs from the Peter Seroka collection and is accompanied by the label.

60 €

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Group of prismatic celestine crystals, of very good size and from a classic Spanish locality for the species. It occurs in crystals defined by orthorhombic prisms of different orders. Translucent, brilliant and with a soft bluish tone. It belongs from the E. Nicolau collection (Barcelona), labeled by J. Viñals.

80 €

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This specimen presents a good-sized anatase crystal and belongs from this unusual locality in Cáceres. It shows very defined tetragonal dipyramid shapes, with striated faces. Intense toasted honey color, translucent to opaque and shiny. It is accompanied by quartz crystals, on matrix.

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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Interesting specimen due to the town where it comes from. It is a druse (both sides) of small, brilliant jarosite crystals from this small ballast quarry for railway tracks, located in the area known as "La Corraliza" to the NNE of the town of Vall d'Uixó. With old label from J. Viñals.

45 €

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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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Group of cubic fluorite crystals, with transparence that allows us to see the inner violet geometric zoning. Polysynthetic growths on faces. In matrix with baryte.

Este ejemplar de fluorita de la cantera Berta nos muestra grupos de cristales pero también cristales aislados. La matriz es la granodiorita de color rojo "antigua" y se halla tapizada por diminutos octaedros de fluorita casi incoloros. Si algo hay que destacar de esta pieza es que los cristales octaédricos de fluorita muestran en los vértices las caras del rombododecaedro, del cubo y del tetraquishexaedro.

This specimen of fluorite from the Berta quarry shows us a group of crystals but also isolated crystals. The matrix is "old" red granodiorite and is lined by tiny, almost colorless fluorite octahedrons.

This is a specimen of tabular barite crystals, colorless to yellowish tones and very good transparence. It belongs from the Mines d'Osor, currently closed and from which it is impossible to obtain these specimens. The mine closed in 1979 and had eleven levels, with a 290 meter deep shaft. You can still see the ruins of the old facilities and the well from which sphalerite, galena and fluorite were extracted and treated.

This is a specimen of tabular barite crystals, colorless to yellowish tones and very good transparence. It belongs from the Mines d'Osor, currently closed and from which it is impossible to obtain these specimens. The mine closed in 1979 and had eleven levels, with a 290 meter deep shaft. You can still see the ruins of the old facilities and the well from which sphalerite, galena and fluorite were extracted and treated.

Group of tourmaline schorl crystals in parallel growth, with an intense black color and brilliance. With defined top terminal faces. It belongs from the collection of Peter Seroka (L'Escala, Catalonia).

60 €

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