From this classic locality for the species belongs this group of thoryanite crystals, cubic with octahedral shapes at the vertices, twinned and interpenetrated, good size, intense black color, and luster. Thorianite is a thorium oxide, almost always containing some uranium, the variety being uranothorianite.

From this classic locality for the species belongs this group of thoryanite crystals, cubic with octahedral shapes at the vertices, good size, intense black color, and luster. Thorianite is a thorium oxide, almost always containing some uranium, the variety being uranothorianite. This specimen contains around 5-6% uranium by weight. An exceptional piece due to its richness.

From a classic locality for the species is coming this cubic thorianite crystal, good size, intense black color and brightness. The thorianite is a thorium oxide, almost always with some uranium content, the uranothorianite variety. This specimen contains about 5-6% by weight of uranium. 

From a classic locality for the species is coming this cubic thorianite crystal, good size, intense black color and brightness. The thorianite is a thorium oxide, almost always with some uranium content, the uranothorianite variety. This specimen contains about 5-6% by weight of uranium. 

Group of betafite crystals showing defined octahedral faces (triangular), with axial growth. Very interesting for its crystallography and species. An oldie, classic and representative for the species. Although the term betafite was discredited in 2010, many of us still are using this term to define this mineral when we see it. Our specimen is an uranium, calcium, titanium and niobium/tantalum oxide with radioactive activity. Currently the betafite is included as a variety within the pyrochlore supergroup. As a note, the rich uranium term has been only found in the Moon (oxyuranobetafite).

A huge size crystal of betafite showing defined octahedral faces (triangular) and developed dodecahedral ones. Very interesting for its crystallography and species. An oldie, classic and representative for the species.
Although the term betafite was discredited in 2010, many of us still are using this term to define this mineral when we see it. Our specimen is an uranium, calcium, titanium and niobium/tantalum oxide with radioactive activity. Currently the betafite is included as a variety within the pyrochlore supergroup. As a note, the rich uranium term has been only found in the Moon (oxyuranobetafite).

This good-sized specimen displays various clusters of crystals of this rare silicate, with parallel growth and a characteristic salmon-pink color. It comes from the Nicolau collection (Barcelona) and was acquired in an old mineral shop in Girona. Serandite was named in 1931 by Antoine François Alfred Lacroix after J.M. Serand, lighthouse keeper of the Island of Roume, Los Islands, Guinea, who assisted in collecting the mineral and who, coincidentally, had a rosy pink complexion (sic).

260 €

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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).

85 €

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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).

75 €

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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. Sawed at the back. They have been analyzed, and the results indicate an andradite-grossular ratio of approximately 65-35% (RM333A analysis).

85 €

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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. Sawed at the back. They have been analyzed, and the results indicate an andradite-grossular ratio of approximately 65-35% (RM333A analysis).

100 €

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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.

100 €

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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 €

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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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