Rosell Minerales

Excellent specimen of vanadinite formed by several medium-sized crystals, on which groups of larger crystals have been grown. They show the shapes of the hexagonal prism, with slightly striated faces, and with smooth pinacoidal faces. The brilliance and color are more than exceptional. It presents a very intense garnet red color in the central areas of the prism and a redder tone in the pinacoids. Under the incident light it is spectacular. This specimen comes from the ACF shaft, in Mibladen, and was mined on February 6, 2018 and we were very lucky to be there. Pieces with this crystal size and quality are very unusual...
Enjoy the specimen in YOUTUBE: https://youtu.be/pmpvMTamxPU

Size: 10.5 x 8.0 x 2.8 cm.
Main crystal: 19 x 10 mm.
Found in 6/Febr/2018

Very esthetic and historical specimen formed by crystals of cerussite, transparent to translucent, with an unusual brightness, elongated prisms, rich in faces and some twins. Closely observed, it becomes a crystallographic pleasure. From a classic Moroccan mine from where nowadays is not easy to find samples with this quality.

Size: 6.5 x 5.5 x 4.4 cm.
Main crystal: 12 x 4 mm.
Found in ±1985.

Col. J.M. Manchion (Barcelona) - No. 322 (J. Fabre, 04/1986)
Fluorescent under long wave UV

Aesthetic and historic specimen of anglesite, formed by a well developed tabular crystal, lanceolated, very rich in faces, with various rhombic prisms facets and striated pinacoids. It presents an excellent transparence and good brilliance. It is disposed on a galena matrix accompanied by other crystals of the same species. A pleasure to enjoy the crystallography of the piece. An ancient specimen of the former Manchión collection.

Size: 6.2 x 5.2 x 4.8 cm.
Main crystal: 2,5 x 1,8 cm.

Col. J.M. Manchion (Barcelona) - No. 326 (J. Viñals, 1989)

Very esthetic good size specimen of native silver from Imiter. Interesting for its quality, brightness and because it is not acidified, as is usual in many specimens of this type. It is formed by numerous wire and filiform aggregates of native silver, in a loop, with a slightly bronze color and accompanied by metallic gray acanthite. An excellent piece that shows us the silver of Imiter in its most natural state.

Size: 8.3 x 5.5 x 3.2 cm.
Found in 2007.

Classic locality

Novelty obtained on my last trip to Morocco (02/2018). These are brilliant aggregates of gold formed by numerous crystals rich in faces, curved faces and disposed on a matrix of quartz. The SEM-EDS analyzes show that this gold contains a small percentage of silver (<1% weight). They are accompanied by fibrous aggregates of malachite and gray bornite crystals. This specimen stands out for the contrast between the brilliant gold and the green/gray matrix. An exceptional piece. Bleida is a mine located on the eastern rim of the Bou Azzer district.

Size: 4.8 x 4.0 x 3.4 cm.
Main crystal: 8 x 2 mm.
Found in 01/2018

Novelty obtained on my last trip to Morocco (02/2018). These are brilliant aggregates of gold formed by numerous crystals rich in faces, curved faces and disposed on a matrix of quartz. The SEM-EDS analyzes show that this gold contains a small percentage of silver (<1% weight). They are accompanied by fibrous aggregates of malachite and gray bornite crystals. This specimen stands out for the contrast between the brilliant gold and the green/gray matrix. An exceptional piece. Bleida is a mine located on the eastern rim of the Bou Azzer district.

Size: 8.0 x 5.0 x 4.4 cm.
Main crystal: 6 x 2 mm.
Found in 01/2018

Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.

Size: 5.6 x 3.7 x 2.8 cm.
Main crystal: 10 x 9 mm.

Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.

Size: 6.6 x 3.2 x 2.7 cm.
Main crystal: 10 x 9 mm.

Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.

Size: 6.3 x 4.4 x 1.5 cm.
Main crystal: 10 x 9 mm.

Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.

Size: 5.2 x 4.4 x 2.0 cm.
Main crystal: 11 x 9 mm.

Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.

Size: 4.5 x 3.5 x 3.2 cm.
Main crystal: 10 x 10 mm.

Montejícar is located midway between Granada and Jaén, in the northern limit of the province of Granada. This area is known among mineral collectors for the excellent quartz, smoked to morion, doubly terminated and with very poorly developed prism faces, which gives them a characteristic dipyramidal shape. These specimens are found in banded gypsum and marl from the Trias in a Keuper facies characteristic of the Cortijo Cañadas, in the N of the Montejícar municipal district. In the area there are some interesting ruins of plaster kilns.

Size: 5.0 x 3.8 x 2.2 cm.
Main crystal: 14 x 8 mm.

Group of calcite crystals, defined, transparent and brilliant, with a developed prism and negative rhombohedron top terminal faces. On a matrix of barite and calcite. They were collected in a  from open-air mining works in the area of Duyos. Nowadays, these samples from this Asturian mine are very difficult to obtain. They come from the former Manchion collection (with label).

Size: 4.9 x 3.0 x 2.8 cm.
Main crystal: 1.5 x 0.4 cm.
Found in 01/1984.

Col. J.M. Manchion (Barcelona) - No.63 (J. Viñals).
Calcite is fluorescent under LW-UV.

Very large group of rhodochrosite crystals, very bright, transparent and richly faceted. They show interpenetrated figures of the rhombohedron and the escalenohedron. The pink color is very uniform and intense. They are disposed forming aggregates or as isolated individuals, on a matrix with kutnohorite. A old piece belonging of the first specimens those arrived from these Peruvian mines.

Size: 6.0 x 5.2 x 3.7 cm.
Main crystal: 5 x 3 mm.
Found in ±1982.

Col. J.M. Manchion (Barcelona).

These specimens show a matrix formed by arsenates such as erythrite and associated sulphides and arsenates of cobalt and iron. We can observe on both the presence of arborescent, filiform and laminar gold aggregates. SEM analysis has shown that this is a variety of gold rich in silver (23-24%w): electrum.
Under loupe, we can enjoy that some of these gold aggregates are formed by small crystals of octahedral to cubic forms. We can theorize a secondary genesis for this gold-electrum. We have analyzed the matrix of these specimens observing that the bright metallic matrix corresponds to a mixture of cobalt arsenides, probably skutterudite, and other sulphides. We will send all analyzes to the buyer. The deposit where the electrum appeared has been totally covered by mine lands, so more samples can not be obtained on the field. A very rich gold-electrum specimen.

Size: 5.0 x 4.2 x 2.8 cm.
Found in 01/2018.

Analyzed specimen with report

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thin, good size and brilliant. Weight: 0.20 g.

Size: 1.0 x 0.6 x 0.1 cm.
Found in 2018.

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thick, good size and brilliant. Weight: 0.97g.

Size: 1.0 x 0.8 x 0.3 cm.
Found in 2018.

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thin, good size and brilliant. Weight: 1.34 g.

Size: 1.6 x 1.5 x 0.1 cm.
Found in 2018.

Rich group of very sharp metatorbernite crystals, with an intense green grass color, showing the combination of the first and the second order dipyramids, truncated by pinacoidal faces. Its intense color gives a nice contrast with the white quartz matrix. Large open cast mines ans small prospects of kaolinite with some quartz veins in which torbernite crystals have been found. We could say that this locality is included in the most worldwide important torbernite localities due to the crystal quality, size and multiple habits.

Size: 6.0 x 4.2 x 2.8 cm.
Main crystal: 5 mm
Found in ca. 2008

Presents radioactive activity.

Group of very sharp metatorbernite crystals, with an intense green grass color, showing the combination of the first and the second order dipyramids, truncated by pinacoidal faces. Its intense color gives a nice contrast with the white quartz matrix. Large open cast mines ans small prospects of kaolinite with some quartz veins in which torbernite crystals have been found. We could say that this locality is included in the most worldwide important torbernite localities due to the crystal quality, size and multiple habits.

Size: 7.8 x 3.6 x 1.7 cm
Main crystal: 4 mm
Found in ca. 2008

Presents radioactive activity.

Group of very sharp metatorbernite crystals, with an intense green grass color, showing the combination of the first and the second order dipyramids, truncated by pinacoidal faces. Its intense color gives a nice contrast with the white quartz matrix. Large open cast mines ans small prospects of kaolinite with some quartz veins in which torbernite crystals have been found. We could say that this locality is included in the most worldwide important torbernite localities due to the crystal quality, size and multiple habits.

Size: 4.5 x 2.7 x 2.2 cm.
Main crystal: 3 mm.
Found in ca. 2008

Presents radioactive activity.

Group of very sharp metatorbernite crystals, with an intense green grass color, showing the combination of the first and the second order dipyramids, truncated by pinacoidal faces. Its intense color gives a nice contrast with the white quartz matrix. Large open cast mines ans small prospects of kaolinite with some quartz veins in which torbernite crystals have been found. We could say that this locality is included in the most worldwide important torbernite localities due to the crystal quality, size and multiple habits.

Size: 5.5 x 3.8 x 2.0 cm.
Main crystal: 4 mm.
Found in ca. 2008

Presents radioactive activity.

Rich group of very sharp metatorbernite crystals, with an intense green grass color, showing the combination of the first and the second order dipyramids, truncated by pinacoidal faces. Its intense color gives a nice contrast with the white quartz matrix. Large open cast mines ans small prospects of kaolinite with some quartz veins in which torbernite crystals have been found. We could say that this locality is included in the most worldwide important torbernite localities due to the crystal quality, size and multiple habits.

Size: 7.0 x 3.5 x 2.2 cm.
Main crystal: 4 mm
Found in ca. 2008

Presents radioactive activity.

Really nice botryoidal aggregates of malachite, with intense color and a velvety surface due to the small crystals forming globular aggregates. Very different specimen from this mine, well known for the type locality of cornetite species. All aesthetics.

Size: 8.0 x 7.4 x 4.5 cm.
Main crystal: 11 x 10 mm.

A rich group of scalenohedral calcite crystals, very acute, translucent, of good size and from this classic Andalusian locality. Not very common in these mines. Under the ultraviolet (LW) light they present a very remarkable red-pink fluorescence.

Size: 6.6 x 4.2 x 3.5 cm.
Main crystal: 25 x 12 mm.
Found in 1975.

Col. J.M. Manchion (Barcelona) - No.283 (Sabadell)
Fluorescent under long wave UV