Rosell Minerales

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RM1862   Magnesite and dolomite

Azkarate Quarry, Eugi, Esteribar, Nafarroa (Navarra), Spain

This piece is formed by several interpenetrated lenticular yellowish crystals of magnesite, accompanied by dolomite rhombohedrons on matrix. We especially note the rare richness of magnesite crystals in the sample. Good sized and from a classic Spanish locality.

Size: 9.5 x 7.5 x 4.5 cm.
Main crystal: 15 x 12 mm.
Found in ±1998

Fluorescent under long wave UV

RM1794   Dolomite with Manganese oxyde

Azkarate Quarry, Eugi, Esteribar, Nafarroa (Navarra), Spain

Very curious specimen of dolomite from this classic Navarrese locality, which shows a rich group of rhombohedral crystals, some with small negative rhombohedron faces and very sharp edges. They are partially coated with manganese oxides that give them a black and dull surface. This kind of specimens are very unusual in collections.

Size: 7.8 x 6.3 x 4.9 cm.
Main crystal: 18 x 17 mm.


RM1606   Minyulite with crandallite, fluellite and metavariscite

Azkarate Quarry, Eugi, Esteribar, Nafarroa (Navarra), Spain

Aesthetic and good sized minyulite specimen that shows a rich group of prismatic acicular crystals. Minyulite is a rare aluminum and potassium fluorophosphate, which in this quarry has had a remarkable deposit. Few specimens were collected between the years 1999 and 2000. To increase quality, it is accompanied in the matrix by white crandallite crystals pseudom. after fluellite, transparent and defined crystals of fluellite and stalactitic globular aggregates of metavariscite with a greenish tone. These specimens are impossible to obtain today.

Size: 7.5 x 4.5 x 4.0 cm.
Main crystal: 10 mm aggr.
Found in 1999-2000.


RM1607   Fluellite

Azkarate Quarry, Eugi, Esteribar, Nafarroa (Navarra), Spain

This is one of the last fluellite specimens obtained from the fissure appeared in March 2000, where beautiful specimens of this rare phosphate were collected. This specimen was in the discoverer's collection for years. IVery well defined crystals, showing dipyramidal forms truncated by pinacoid, colorless to slightly violet, on a brilliant iridiscent matrix. A very distinctive specimen of the usual for this Navarrese mine, where it is impossible to get specimens. An opportunity to get a historical and very displayable specimen.

Size: 6.7 x 5.5 x 2.3 cm.
Main crystal: 2 x 1 mm.
Found in 03-2000.


RM1530   Dolomite

Azkarate Quarry, Eugi, Esteribar, Nafarroa (Navarra), Spain

Group of rhombohedral crystals of dolomite, some of them twinned, with very defined faces and edges. They show striated faces, transparency and brilliance. With curious grayish inclusions disposed ramdomly in the crystal core. A classic specimen for the Spanish mineralogy.

Size: 8.5 x 8.5 x 6.5 cm.
Main crystal: 30 x 24 mm.