Rosell Minerales

On a sandstone matrix some yellow crusts of coconinoite formed by small tabular to micaceous crystals. This sample has been analyzed by SEM-EDS and we will send the results to the buyer.

Size: 8.2 x 7.4 x 4.2 cm.

Presents radioactive activity.

For uranium mineral collectors, this carnotite of an intense yellow color, formed by numerous globular aggregates of crystals, covering the surface of the sandstone matrix. An American classic, labeled E. Kucera (Barcelona).

 

 

Size: 5.7 x 2.7 x 1.3 cm.

Col. Manchion (Barcelona).
Presents radioactive activity.

On a sandstone matrix some yellow crusts of coconinoite formed by small tabular to micaceous crystals. This sample has been analyzed by SEM-EDS and we will send the results to the buyer.

Size: 5.0 x 3.1 x 1.2 cm.

Presents radioactive activity.

Topaz crystal aesthetically disposed on a rhyolite matrix. It shows several faces very well defined, with an excellent transparency and a uniform tone. From a classic locality.

 

Size: 7.5 x 8 x 5.5 cm.
Main crystal: 18 mm.

Very esthetic aggregates of tabular tyuyamunite crystals. Very bright, intense yellow greenish color and contrasting with the matrix. A very representative specimen for the species.

Size: 3.7 x 2.7 x 1.1 cm.

Presents radioactive activity.

A really aesthetic green variscite specimen from the occurrence at Clay Canyon. The polished specimen hosts a whitish crandallite. Variscite is known from dozens of localities around the world, but the specimens from Utah are amongst the better pieces from the United States. The species is named for the German district of Variscia, which was the medieval name for modern-day Vögtland.

Size: 9.8 x 5.5 x 4.6 cm. (2 unidades)

Ex. L. Daunis (Barcelona)

A huge size topaz crystal well disposed on the rhyolite matrix. It shows well defined faces and edges, excellent transparency and uniform toasted honey tone. It shows natural cleavage planes. A gem from a classic locality.

Size: 7.7 x 6.5 x 5.8 cm.
Main crystal: 38 x 8 mm.

A brilliant and very sharp bixbyite crystal. A manganese oxyde well-known and appreciated by collector for its rich crystallographic forms. In this specimen we can see the cubic main form with vertex truncated by trapezohedron and a small triangular octahedron face. A crystallographic pleasure... Very aesthetically disposed on a volcanic rocky matrix. With an old display label.

Size: 4,5 x 4,0 x 3,7 cm.
Main crystal: 6 x 5 mm.