Rosell Minerales

These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanèchite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

Size: 4.7 x 2.8 x 2.6 cm.
Found in ±2017.

Analyzed specimen with report

Rich aggregate of tabular baryte crystals, brilliant, defined and between translucent to transparent on the edges. From a classic locality for the Spanish mineralogy.

Size: 6.2 x 4 x 3 cm.
Main crystal: 1 cm.
Found in ca. 1996.

Col. J. Astor (Barcelona).

Showy specimen in the form of divergent stalactitic aggregates, with a patina of manganese oxides on the back side. Aerial and good sized. A very curious piece of this mine from Murcia.

Size: 8 x 7 x 6.5 cm.

Col. J.A. Robles (La Unión, Murcia)

A very notable specimen for the size of the pyrolusite sharp crystals, which form brilliant aggregates. In some areas they are partially covered by small botryoidal aggregates of goethite, black and very bright. A place under the magnifying glass.

Size: 5.4 x 3.5 x 2.4 cm.
Found in ±01/1986.

#221, EK, Col. Manchion (Barcelona).
Classic locality

These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanèchite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

Size: 7 x 4.8 x 4.2 cm.
Found in 2017.

Analyzed specimen with report

Good specimen formed by various manganese oxides, with tabular crystals of pyrolusite forming brilliant rosettes, on botryoidal aggregates of romanèchite-pyrolusite. A good old piece. Acquired by Sr. Manchion in the former minerals fair held in 1985 in L'Hospitalet de Llobregat, close to Barcelona.

Size: 7.8 x 6.2 x 3.5 cm.
Main crystal: 5 x 4 mm. aggr.
Found in ±1985.

Col. J.M. Manchion (Barcelona). No.137, 1985.

These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanèchite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

Size: 4.3 x 4.3 x 3.6 cm.
Found in 2017.

Analyzed specimen with report

A rich group of baryte crystals, with staggered stalactite growths, intense white, with defined faces and edges and forming a very displayable and aesthetic "crest". Really good size.

Size: 18 x 11 x 10 cm

A rich group of baryte crystals, with staggered stalactite growths, intense white, with defined faces and edges and forming a very displayable and aesthetic "crest". A Spanish classic, different from the usual.

Size: 12 x 5.5 x 4.5 cm.

Col. J.M. Manchion (Barcelona) - No. 460 (Sants, 1989)

These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small romanechite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer.

Size: 6.0 x 6.0 x 2.6 cm.
Found in 2017.

Analyzed specimen with report

These are the most fine quality romanèchite specimens ever found in Spain. These botryoidal aggregates show the velvet surface formed by several small todorokite/romanechite/pyrolusite crystals (see SEM photo). These specimens has not been treated, only fresh water. Romanèchite shows in fresh fracture the classic grey color. You can observe small but brilliant crystals of pyrolusite on the stalactitic surface. Analysis will be send to the buyer. Good size.

Size: 11.0 x 7.8 x 5.5 cm.
Found in 2017.

Analyzed specimen with report

Rich group of tabular crystals of baryte with transparency, very defined, with a book shape. It is accompanied by a L. Daunis handwritten label that refers to the Esperanza mine.
Tercera Esperanza Mine (Esperanza Mine), Cabezo de San Ginés, San Ginés de la Jara, Sierra Minera de Cartagena-La Unión, Cartagena, Murcia, Spain

Size: 7.3 x 5.0 x 4.2 cm.

Bright, very bright aggregates of tabular crystals of pyrolusite, very well defined, and disposed on a matrix of botryoidal romanèchite. They come from a recent find in this classic Murcia mine. Both species have been analyzed and the result will be sent to the buyer. Very aesthetic specimen.

Size: 6.3 x 3.5 x 2.5 cm.
Main crystal: 5 x 3 mm.
Found in 2016

A nice druse of very curious calcite crystals showing rhombohedron terminal faces and the side faces covered with a second generation of calcite with staggered growth of intense white color. They are disposed on a matrix of goethite with manganese oxides. Special one for calcite mineral collectors.

Size: 12.0 x 8.3 x 6.3 cm.
Main crystal: 10 x 10 mm.

Fluorescent under long wave UV

In the matrix of goethite we observe several cavities covered by small brilliant crystals, gray metallic luster; once analyzed results indicated to be hydrohetaerolite. We discuss whether it is hetaerolita, but analysis carried by Joan Viñals indicated the hydrated form. Under the SEM-EDS, tetragonal dipyramids are observed. It is accompanied by calcite crystals and hemimorphite (tabular crystals in book shape). SEM-EDS analysis will be sent to buyer.

Size: 7.3 x 6.4 x 6.3 cm.

Analyzed specimen with report

Group of stalactitic aggregates of barite crystals. They are very aerial disposed and formed by bladed crystals with chisel-shaped terminations. With a really good brilliance, some transparence and white color with yellowish tone. A good size specimen. A notable recent find from this Mediterranean mining area that never stops to surprise us.

Size: 10.0 x 6.0 x 5.0 cm.
Main crystal: 27 x 8 mm.
Found in 12/2014.

Group of stalactitic aggregates of barite crystals. They are very aerial disposed and formed by bladed crystals with chisel-shaped terminations. With a really good brilliance, some transparence and white color. A good size specimen. A notable recent find from this Mediterranean mining area that never stops to surprise us.

Size: 8.8 x 6.5 x 5.4 cm.
Main crystal: 26 x 12 mm. aggreg.
Found in 12/2014.

Group of stalactitic aggregates of barite crystals. They are very aerial disposed and formed by bladed crystals with chisel-shaped terminations. With a really good brilliance, some transparence and white color. A notable recent find from this Mediterranean mining area that never stops to surprise us.

Size: 8.8 x 7.0 x 5.3 cm.
Main crystal: 25 x 12 mm. aggreg.
Found in 12/2014.

Group of very sharp barite crystals showing two growth generations. First one is formed by good size tabular crystals and it's coated by second generation. This second growth phase presents stalactitic-shape aggregates formed by bladed crystals and chisel-shaped terminations. With a really good luster and snowy white color. A notable recent find from this Mediterranean mining area that never stops to surprise us.

Size: 9.0 x 7.4 x 4.5 cm.
Main crystal: 12 x 5 mm.
Found in 12/2014.

Group of interpenetrated cubic fluorite crystals with violet tones and delicate color zoning, transparence in some crystals, most being translucent. Characteristic for fluorite of this mine are the corroded faces. They are disposed on a matrix of iron oxides. What I also would like to emphisize of this piece is the mine from which it comes, near Alumbres in Cartagena, not well represented in collections.

Size: 6,4 x 4,5 x 3,3 cm.
Main crystal: 13 x 12 mm.

Fluorescent under long wave UV

Tabular celestite crystal with a good size and very defined faces and edges. Very aerial disposed on the matrix. Excellent transparence and brilliance. During many years these crystals were characterized as barite, but later studies showed that they were celestite. From a classic Spanish mine.

Size: 5,7 x 4,0 x 2,3 cm.
Main crystal: 23 x 17 mm.