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

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

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

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

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