A beautiful radial aggregate of boltwoodite crystals, from this classic locality for the species. Good luster and intense color. The original label reads Rössing mine, but they were mislabeled at the time.

Rare specimen of Piemontite from India. With metallic luster braunite aggregates and quartz. From Emili Nicolau col. (BCN) and D. Shannon (adq. 2003), with labels.

Euxenite-(Y) is an uncommon oxyde of niobium with tantalum and titanium and Rare Earth Elements (REE), with some calcium and radioactive elements like uranium or thorium. These elements give it a radioactive activity. This specimen we offer you is a cluster of parallel growth crystals, well-formed, with a chisel termination.With the classic ocher patina. A good chance to get a fine and good sized specimen.

360 €

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Druse of tabular torbernite crystals from this classic mine for the species. Good luster, translucent to traansparent, and with a very intense green color.

95 €

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Yellowish globular aggregates of this rare uranyl tellurite, whose type locality is this Mexican mine. It is accompanied by green aggregates of emmonsite. It comes with the David Shannon label (2003) and belonged to the Nicolau collection (Barcelona).

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On a matrix of polymetallic sulfides, primarily pyrite, are several druses of intensely lustrous, deep blue covellite crystals. These are accompanied by sulfur crystals, among other minerals. This specimen belongs from the Atalaya open pit, an emblematic mining operation in Huelva province.

Druse of tabular torbernite crystals from this classic mine for the species. Good luster, translucent to traansparent, and with a very intense green color.

A spectacular specimen of fergusonite-(Y), a somewhat unusual yttrium niobate, which typically occurs massively or in small crystals. In this specimen, several crystals can be observed growing in parallel. It belongs from the collection of Jean Béhier (1903-1963), a self-taught French mineralogist who amassed a collection of over 5,000 specimens, primarily of Madagascar minerals. This collection was formed through his numerous field studies and the many exchanges he made throughout his life. A top specimen for both the species and the locality.

Nice monazite-(Ce) crystal, rich in faces, with luster and intense brown color. Nowadays finding specimens with this quality is not easy. These specimens have been analyzed, indicating that cerium is predominant, and that it is accompanied by other REEs such as lanthanum and neodymium, together with thorium, which gives it some radioactivity. We will send the results and label to the buyer.

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These specimens come from an old find in the Felhuns area, en Prada de Conflent. It was a skarn deposit where garnet veins appeared. Currently, it is completely prohibited to extract specimens, due, as is often the case, to the actions of irresponsible individuals who not only remove specimens but also damage the site. The crystals are dodecahedral, often beveled by the trapezohedron, very brilliant, with a very intense toasted honey color and some transparence. They have been analyzed, and the results indicate an andradite-grossular ratio of approximately 65-35% (RM333A analysis).

90 €

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A very aesthetic specimen composed of numerous brilliant, tetrahedral chalcopyrite crystals. They are accompanied by sphalerite crystals. Particularly notable are some partially corroded hexagonal fluorapatite crystals, which fluoresce under UV-OL light. A brilliant specimen for magnification.

A mine in the southern part of the Huarón district, although not operated by the same company that works other Huarón area mines. "Alimon" mine is a misnomer sometimes encountered in the literature. Primarily hydrothermal Pb-Zn-Cu-Ag vein deposits. Located 3 km SSW of the Huarón mine.

110 € 80 €

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A highly aesthetic specimen composed of numerous lustrous, tetrahedral chalcopyrite crystals. They are accompanied by numerous cubic pyrite crystals with striated faces. Also present are black sphalerite crystals. Particularly notable are some partially corroded hexagonal fluorapatite crystals, which fluoresce under UV-OL light. A brilliant specimen for magnification.

A mine in the southern part of the Huarón district, although not operated by the same company that works other Huarón area mines. "Alimon" mine is a misnomer sometimes encountered in the literature. Primarily hydrothermal Pb-Zn-Cu-Ag vein deposits. Located 3 km SSW of the Huarón mine.

80 €

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This specimen is a sample extracted from the mercury deposits of the Guelma area in Algeria, most likely before the mid-1950s. The accompanying handwritten label indicates that it comes from the Guelma area and from the collection of Jean Chervet (1904-1962). Chervet, whose name identifies the mineral chervetite, was a French mineralogist and collector, and director of the Mineralogy Service of the Atomic Energy Commission in France since 1948.
It is a compact piece of cinnabar, with red powdery crusts and small crystals. It is accompanied by colorless crystals of cerussite and yellow powdery 'bindheimite' (analyzed by SEM-EDS). Probably from Djebel Taya mercury mines. An interesting specimen as a species, provenance, and collection.

190 €

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The titanite crystals from this Malagasy locality are largely unknown to collectors. They are a group of very good-sized crystals with defined faces and a brownish color, set within a matrix of calcite, scapolite, and diopside. A very interesting specimen, both for its location and for the unusual size and shape of the titanite. It was identified as coming from Fort Dauphin. The Amboasary district is famous for its numerous deposits of thorianite and phlogopite.

190 €

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A very fine specimen consisting of a druse of arsenical vanadinite crystals from this classic Mexican locality. These are barrel-shaped crystals with pointed ends and a remarkable luster. The chocolate brown color is very uniform. Nowadays, these specimens are rare to see.

Aggregate of brown sphalerite crystals nestled in a matrix of dolomite crystals. When light passes through them, they reveal that characteristic honey-brown hue.

A group of complex, interpenetrating sphalerite crystals with dodecahedron faces. The specimen is translucent, allowing light to shine through it, revealing the orange luminosity that makes these specimens prized by collectors.

The celestine specimens from the Torà and Ivorra regions are a classic of Catalan mineralogy. They have been found in different areas of both municipalities. This specimen comes from test pits taken near Torà, on slopes that are now covered and prohibited for searching due to the destruction caused by some prospectors in the past. Pointed prismatic crystals, slightly bluish-gray in color, are found in cavities lined with calcite, in a carbonate marl matrix.

The celestine specimens from the Torà and Ivorra regions are a classic of Catalan mineralogy. They have been found in different areas of both municipalities. This specimen comes from test pits taken near Torà, on slopes that are now covered and prohibited for searching due to the destruction caused by some prospectors in the past. Pointed prismatic crystals, slightly bluish-gray in color, are found in cavities lined with calcite, in a carbonate marl matrix.

Exceptional quartz specimen, with elongated prisms forming divergent, transparent to translucent aggregates. It has a slightly reddish hue due to the presence of hematite speckles the crystals. It is accompanied by small crystals of pyrite and chalcopyrite. A display specimen from this classic Peruvian locality.

470 €

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Druse of dioptase crystals, with very defined faces and edges, brilliant, transparent, and disposed on a quartz rocky matrix. The color is very distinctive, difficult to reproduce in photography. They are accompanied by small aggregates of malachite crystals, with a different green. A piece of good size and quality.

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Druse of dioptase crystals, with very defined faces and edges, brilliant, transparent, and disposed on a quartz rocky matrix. The color is very distinctive, difficult to reproduce in photography. They are accompanied by small aggregates of malachite crystals, with a different green. A piece of good size and quality.

400 €

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An amazing specimen of andradite, a variety of melanite, formed by numerous, well-defined idiomorphic crystals, with dodecahedron faces truncated by trapezohedron faces. They are lustrous and exhibit greenish reflections and transparencies when light hits them. They are arranged in a highly contrasting manner on a light-colored matrix.

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A group of cubic fluorite crystals, ranging in color from purple to violet depending on the incident light. Well-defined faces and edges, luster, and transparency. On the back, they are partially covered with quartz microcrystals.

Recently, specimens of scapolite of Moroccan origin have appeared on the market. The analyses we have carried out on several specimens indicate that it is mainly marialite, since the proportion of Na (marialite, Na₄Al₃Si₉O₂₄Cl) is higher than that of calcium (meionite, Ca₄Al₆Si₆O₂₄CO₃), and the presence of chlorine is also detected. We can see that the proportion of Ca is quite high, so we are in the middle of the marialite-meionite series. Crystals appear as tetragonal prisms truncated by the basal pinacoid and the first-order dipyramid. Transparent to translucent and with some inclusions. Fluorescent under SW-UL. We will send the analyses to the buyer.

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