Rosell Minerales

On a matrix of quartz crystals, with azurite, there are numerous fibrous aggregates of malachite crystals. Intense color, good brilliance and silky luster. A very bright piece.

Size: 7.5 x 6.4 x 3.0 cm.
Found in ±1988.

Col. J.M. Manchion (Barcelona). No.427.

From what has been analyzed, Imini pyrolusites are partially replaced by manganite. This specimen is not at all common, since it shows us shapes in sheaf that remind us the German manganite specimens. Intense black color, very defined crystalline aggregates, with some isolated crystals... An exceptionally rare sample. On baryte matrix.

Size: 8.4 x 6.5 x 5 cm.
Main crystal: 8 x 4 mm.
Found in 2017

Very aesthetic calcite specimen showing groups of scalenohedral sharp crystals, with transparence that allow to see reddish geometric inclusions. On a matrix with chalcopyrite and marcassite. Ver unusual for the locality.

Size: 7.5 x 4.7 x 3.5 cm.
Main crystal: 20 x 10 mm.
Found in 2016

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

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: 5.5 x 4.5 x 3.8 cm.
Found in 01/2018

This specimen stands out for showing arborescent growths of very well defined silver cubic crystals. In addition, the piece comes from a Moroccan mine from which few samples of this type and quality have been collected. To add more importance to the piece, it must be said that the calcite has been partially removed by mechanical procedures, without acids that could cause the silver to blacken. Well defined, extremely brilliant and isolated silver crystals are not very common, usually appear deformed or in complex growths. An excellent and good sized specimen (several photos attached).

Size: 10.5 x 5.5 x 3.6 cm.

Very curious globular aggregates formed by prismatic crystals that vary their composition according to the zone, although the XR diffraction study shows that it is talmessite, without discarding that in some parts of the aggregate a higher cobalt content is observed. These aggregates are disposed on a matrix of cobaltoan calcite, together with manganese oxides. Very interesting.

Size: 6.8 x 5.5 x 3.6 cm.
Main crystal: 12 x 11 mm aggr.
Found in 2018.

Vladimirite specimens from Aït Ahmane are among the world's best for the species. It is a rare arsenate that forms aesthetic rosettes of tabular to fibrous crystals, very sharp and colorless. They are accompanied by white aragonite and pink talmessite and erythrite. These specimens were found in the walls near the entrance of the galleries of the 53rd vein of this Moroccan mine. Good sized sample. The SEM-EDS analysis will be sent to the buyer.

Size: 6.3 × 4.2 × 4 cm
Main crystal: 2 mm.
Found in ± 2008

Analyzed specimen with report

Very curious aggregate of calcite crystals, forming a rosette, which are disposed very aesthetically on a matrix of quartz crystals. We can observe numerous acicular aggregates of goethite included in the quartz and even coming out of it and penetrating the calcite. An unusual Moroccan piece as is its locality. From the Gustav Beck collection.

Size: 4.8 x 3.0 x 3.0 cm.

Col. Gustav Beck

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

A huge size and aesthetic native copper, which shows an arborescent growths formed by copper crystals. They are partially covered by copper salt species, together with cuprite. A very displayable piece.

Size: 21 x 15 x 3.8 cm
Found in 2018.

A huge size and aesthetic native copper, which shows an arborescent growths formed by copper crystals. They are partially covered by copper salt species, together with cuprite and quartz. A very displayable piece.

Size: 13.0 x 12.0 x 4.2 cm.
Found in 01/2018.

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 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

A floater nodule with blackish and whitish spheroidal forms with some visible crystalline faces. They're a silicified fossil sponge which have preserved the original morphology of the biological specimens.

Size: 6.7 x 3.6 x 3.0 cm.
Found in 2016

A floater nodule with blackish and whitish spheroidal forms with some visible crystalline faces. They're a silicified fossil sponge which have preserved the original morphology of the biological specimens.

Size: 6.2 x 5.0 x 3.0 cm.
Found in 2016

Baryte specimens from this Maghrebian locality are very unusual. They appear labeled as Irhoud and there is a discussion about the locality. These are aggregates of tabular lanceolate baryte crystals those form beautiful rosettes, very aerial disposed, with inclusions those give them these reddish tones. On a matrix with quartz. A rarity.
Echemaïa (Arabic: الشماعية) is a city of Morocco, located in the region of Marrakech-Safi between the city of Safi and Marrakech. Formerly called "Al Kasba" it was renamed "Chemaïa" (literally: "La Chandelière") since the establishment of one of the largest candle factories in the region.

Size: 9.5 x 7.0 x 4.7 cm.
Main crystal: 25 mm.
Found in 1970's.

Col. J.M. Manchion (Barcelona) - No. 325 (1987)

Group of barite crystals with parallel growth, between transparent and translucent, with brilliant, honey to yellowish tone and with defined tabular shape. An aesthetic specimen with a minor marcasite matrix.

Size: 4.8 x 4.3 x 3.7 cm.
Main crystal: 3.7 x 2.8 cm.
Found in 2013.

Good size parallel growth of tabular crystals of barite, very sharp and with very well defined faces and edges. They are translucent and accompanied by very bright and small marcasite.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 7.9 x 5.5 x 4.3 cm.
Found in 2013.

Fine quality specimen that shows aggregates of tabular crystals of baryte, with a slight bluish tone, brilliant and with defined faces and edges. Accompanied by several marcasite crystals showing various twins, such as "cockscomb", as aggregates or very aesthetic individual crystals. On a quartz crystal matrix.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 6.8 x 5.4 x 5.3 cm.
Main crystal: 12 x 10 mm.
Found in 2013.

Huge size parallel growth of tabular crystals of barite, very sharp and with very well defined faces and edges. They are translucent and very bright and have flattened isolated crystals of marcasite showing the twin known as "cockscomb". On a quartz crystal matrix.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 9.3 x 6.4 x 5.2 cm.
Found in 2013.

Good size parallel growth of tabular crystals of barite, very sharp and with very well defined faces and edges. They show a yellowish tone, translucent with inclusions. Accompanied by cubic pyrite with small octahedral faces. On a quartz crystal matrix with marcasite.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 9.8 x 9.3 x 6.5 cm.
Main crystal: 38 c 30 mm. bar.
Found in 2013.

Good size parallel growth of tabular crystals of barite, very sharp and with very well defined faces and edges. They show a pale blue to grey color, translucent and very bright and have flattened crystals of marcasite showing the twin known as "cockscomb". On a quartz crystal matrix with cubic pyrite and minor chalcopyrite.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 8.4 x 5.7 x 4.0 cm.
Main crystal: 20 x 18 mm.
Found in 2013.

Good size parallel growth of tabular crystals of barite, very sharp and with very well defined faces and edges. They show a pale blue color, translucent and accompanied by cubic pyrite with small octahedral faces. On a quartz crystal matrix with minor chalcopyrite.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 7.5 x 7.3 x 4.5 cm.
Main crystal: 25 x 20 mm.
Found in 2013.

Elongated baryte crystals with very well defined faces and edges, transparent, very bright, with a brownish-yellow color and with darker selective micro-inclusions on some of the faces. On a pyrite matrix with marcasite twins, orange micro-siderite and quartz crystals.
These mines are located approximately 50 km south of Alnif, near the border with Algeria. This area was already mined in medieval age for the extraction of copper. In the 60s of the last century, French companies expanded shafts and mineral extraction.

Size: 7.7 x 6.4 x 2.4 cm.
Main crystal: 40 x 14 mm.
Found in 2013.