Rosell Minerales

Esthetic specimen formed by groups of lepidolite mica, bright and defined, on which we observe see a brilliant topaz crystal, slightly bluish and faceted, with excellent transparency. Uncommon on matrix. With old handwritten label.

Size: 5 x 4.5 x 3 cm.
Main crystal: 10 mm. top.
Found in ±1990.

Col. H.G. Hopper.

Achtaragdite is a unique, rare and poorly understood pseudomorph, from this remote Siberian locality that is the Type Locality for grossular garnet. It is a variety of the grossular-hibschite garnet series and is (technically, according to mindat) a hydrogrossular-chlorite-carbonate pseudomorph after what was formerly considered to be wadalite or some other rare hydrogarnet. The real precursor mineral for these pseudomorphs is now considered to be helvite.

Size: 4.7 x 4.5 x 3.9 cm.

Excellent specimen of galena, with very good luster. It shows forms of the cube and the octahedron, twinned. It has very aesthetic skeletal and ochy growths. The mine produced specimens of this quality a few years ago and now it is increasingly difficult to find them.

Size: 5 x 4.6 x 3.3 cm.
Found in ±2008.

These pyrite specimens from this Bulgarian mining area are very aesthetic, highlighting the complex forms and penetration twins they present. Good luster and color. They are accompanied by crystals of quartz on the matrix. It comes from a mining area known as the Septemvri mine, which includes the following deposits: Sharenka, Baram, Mogilata, Osikovo and Pechinsko.

Size: 4.2 x 3.8 x 3.5 cm.
Main crystal: 1.6 cm.

These baryte crystals are very different from the usual ones that we can see coming from this Moroccan locality and even from other deposits famous for baryte. These are prisms of different orders, the predominant third order, truncated by the second order. We observe that a white geometric growth has formed and only affects certain faces of the rhombic prisms. This zoning is unusual for the species. The crystals are transparent and brilliant.

Size: 7.8 x 4 x 1.3 cm.
Found in 2021.

Very aesthetic aggregates of epidote crystals forming beams, with brilliance, defined and with this classic green color. They are disposed on the matrix with quartz crystals, forming very interesting concentric growths.

Size: 6.7 x 5.7 x 2.8 cm.
Main crystal: 9 mm.
Found in 2021.

Very aesthetic aggregates of epidote crystals forming beams, with brilliance, defined and with a classic green color. They are arranged in groups and in an isolated way on the matrix with quartz crystals, on which they stand out.

Size: 7 x 5.5 x 2.8 cm.
Main crystal: 9 mm.
Found in 2021.

Very rich chabazite-Ca specimen, with defined and brilliant crystals, those cover one side of the matrix, while on the other we can see numerous heulandite crystals with groups of chabazite-Ca in the upper part. This specimen belongs from the Faroe Islands (Færøerne, which means "islands of lambs"), an autonomous territory of the Kingdom of Denmark, made up of a small archipelago in the North Atlantic, between the United Kingdom, Norway and Iceland. It is not easy to find zeolites from this area.

Size: 8 x 5.5 x 4 cm.
Main crystal: 1.9 cm.

Group of cubic to prismatic fluorite crystals, translucent, with a color between violet to purple depending on the incident light. A good size specimen with a matrix on the back. From this classic Moroccan mine.

Size: 7.6 x 5.2 x 3.3 cm.
Main crystal: 2 cm.
Found in 2020.

Divergent aggregates of good sized acicular to prismatic goethite crystals. They are accompanied by black globular aggregates that, once analyzed, have turned out to be a first generation of goethite. It is accompanied by small aggregates of green conichalcite crusts, also analyzed. The specimen shows a fissure that has been consolidated, without affecting its stability and aesthetics.

Size: 8.3 x 5.6 x 4.2 cm.
Main crystal: 1.2 cm. glob.
Found in ±2000.

Classic locality

These specimens show us a chalcopyrite matrix partially transformed into irisdecent covellite-bornite and goethite. In the cavities there are numerous aggregates of prismatic malachite crystals, of an intense green, with transparency and brilliance. If we observe them with the magnifying glass we can see that they are faceted crystals. A novelty in the Bleida mines area.

Size: 8 x 5.9 x 5.7 cm.
Found in 2021.

A novelty from the Bleida mines. Groups of malachite crystals, prismatic to needle like, forming velvety aggregates with intense brilliance and color. They are disposed in the cavities of a quartz and dolomite matrix, with cuprite.

Size: 5.3 x 3.5 x 2.7 cm.
Found in 2021.

These pyrite specimens from this Bulgarian mining area are very aesthetic, highlighting the complex forms and penetration twins they present. Good luster and color. They are accompanied by crystals of quartz, sphalerite and brilliant chalcopyrite on the matrix. It comes from a mining area known as the Septemvri mine, which includes the following deposits: Sharenka, Baram, Mogilata, Osikovo and Pechinsko.

Size: 3.8 x 2.2 x 2.1 cm.
Main crystal: 1.8 cm.

These pyrite specimens from this Bulgarian mining area are very aesthetic, highlighting the complex forms. Good luster and color. They are accompanied by crystals of quartz, sphalerite and brilliant chalcopyrite on the matrix. It comes from a mining area known as the Septemvri mine, which includes the following deposits: Sharenka, Baram, Mogilata, Osikovo and Pechinsko.

Size: 3.3 x 2.9 x 1.5 cm.
Main crystal: 2.5 cm.

These pyrite specimens from this Bulgarian mining area are very aesthetic, highlighting the complex forms and penetration twins they present. Good luster and color. They are accompanied by crystals of quartz, sphalerite and brilliant chalcopyrite on the matrix. It comes from a mining area known as the Septemvri mine, which includes the following deposits: Sharenka, Baram, Mogilata, Osikovo and Pechinsko.

Size: 4.4 x 3.3 x 2.5 cm.
Main crystal: 2.3 cm.

Group of smoky quartz crystals of a very good size, complete, doubly terminated and with parallel growth. With transparence and brilliance and a uniform smoky tone. It comes from this classic Swiss locality.

 

Size: 8.4 x 5 x 4.3 cm.

Classic locality

Groups of fan-shaped epidote crystals, very bright and with transparency and disposed very aerial on the ophite matrix. Intense green color, brightness and transparence. It is currently prohibited to collect in this area. A sample with a good size and excellent quality, from the classic town of Casterner.

Size: 11 x 7 x 6 cm.
Main crystal: 2.2 cm.

A novelty from the Bleida mines. Groups of malachite crystals, prismatic to needle like, forming velvety aggregates with intense brilliance and color. They are disposed in the cavities of a quartz and dolomite matrix, with chalcopyrite and bornite.

Size: 10 x 9 x 7 cm.
Found in 2021.

Group of cubic to prismatic fluorite crystals, with a semi-matte luster, transparent to translucent. They are arranged very aerially on a matrix of baryte crystals. From this classic Moroccan mines.

Size: 5.8 x 5.2 x 2.5 cm.
Main crystal: 1.8 x 1.5 cm.
Found in 2021.

Group of fluorite crystals, very brillinat, with marked color zoning, more intense on the edges. The cube faces show highly aesthetic polysynthetic growths. They are disposed very aerially on a matrix with scalenohedral calcite crystals and small quartz druses. From this classic Moroccan locality.

Size: 6.7 x 4.4 x 3.2 cm.
Main crystal: 1.5 x 1.4 cm.
Found in 2021.

This group of hyaline quartz crystals belongs from the Cabiche mine, very sharp, with exceptional transparency and luster. They show parallel and at the same time crossed growths. Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century.

Size: 6.6 x 4.7 x 3.1 cm.
Main crystal: 6 cm.
Found in 2018.

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.

Size: 7.7 x 5.5 x 4.7 cm.
Main crystal: 3.8 cm.
Found in 2018.

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.

Size: 7 x 6 x 5 cm.
Main crystal: 6.6 cm.
Found in 2018.

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.

Size: 7.4 x 7.4 x 3.9 cm.
Main crystal: 6.4 cm.
Found in 2018.

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.

Size: 8.9 x 7.6 x 6.5 cm.
Main crystal: 4.5 cm.
Found in 2018.