Rosell Minerales
RM3069 Barahonaite-(Al)
Gold Hill Mine, 80 foot level, Gold Hill, Tooele Co., Utah, United States of AmericaA specimen of the highest quality for this locality and for the species, named in honour to our colleague D. Antonio Barahona. The species was determined in samples from Pastrana, Mazarrón (Murcia), its type locality, more than a decade ago by Dr. Joan Viñals. This specimen shows various vugs covered by small sky-blue barahonaite crystals. The color is excellent and the size of the sample makes it worthy of a fine showcase. We have also analyzed it and will send the results to the buyer.
Size: 6.1 x 4.5 x 4.2 cm.
Analyzed specimen with report

RM2249 Coconinoite
Jomac Mine, White Canyon, San Juan Co., Utah, United States of AmericaOn 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.

RM2167 Carnotite
Oljeto Mesa, Monument Valley-Navajo Country, Goulding, San Juan Co., Utah, United States of AmericaFor 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.

RM1973 Coconinoite
Jomac Mine, White Canyon, San Juan Co., Utah, United States of AmericaOn 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.

RM1937 Topaz
Topaz Mountain, Thomas Range, Juab, Utah, United States of AmericaTopaz 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.
RM1843 Tyuyamunite
Butler No. 2 Mine, Crescent Creek, Garfield Co., Utah, United States of AmericaVery 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.

RM1711 Variscita
Little Green Monster Variscite Mine, Clay Canyon, Fairfield, Oquirrh Mts, Utah, United States of AmericaA 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)
RM890 Topaz on Rhyolite
The Cove (Topaz Valley), Thomas Range, Juab Co., Utah, United States of AmericaA 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.
RM805 Bixbyite
Topaz Mountain, Thomas Range, Juab, Utah, United States of AmericaA 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.

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