Rosell Minerales
RM3175 Chalcocite
Dzhezkazgan Mine, Dzhezkazgan, Karagandy, Karaganda Oblast', KazakhstanGroups of very well defined chalcocite crystals, with hexagonal pyramidal shapes, with striated faces perpendicular to the main axis and forming aggregates. Metallic gray luster with bluish iridescences. They are disposed on a matrix with brilliant quartz microcrystals. A classic from Kazakhstan, each day scarcer.
Size: 7.5 x 4.5 x 3.8 cm.
Main crystal: 12 mm.
Col. J. Viñals.

RM1069 Bornite with chalcopyrite and calcite
Dzhezkazgan Mine, Dzhezkazgan, Karagandy, KazakhstanA former bornite specimen of this classic locality for the species. We observe two crystals with a good size and rounded faces and edges. They show an excellent luster and aesthetic iridescence. They are accompanied by a chalcopyrite in a matrix of calcite. A piece with history for the best display.
Size: 10.0 x 7.2 x 4.5 cm.
Main crystal: 20 x 17 mm.
Found in ca. 1990.
RM1023 Azurite
Dzhezkazgan Mine, Dzhezkazgan, Karagandy, Karaganda Oblast', KazakhstanA floater aggregate of lanceolated sharp azurite crystals with a more than excellent color and luster. From a mine not well represented in collections.
Size: 4.0 x 3.8 x 3.5 cm.
Found in 2007.
RM553 Azurite with malachite pseudomorph after azurite
Dzhezkazgan Mine, Dzhezkazgan, Karagandy, Karaganda Oblast', KazakhstanA very rich specimen formed by several azurite crystals that have been pseudomorphed by malachite showing original lanceolated forms, also tabular crystals with velvety faces due to fibrous malachite. Azurite, with deep color, crystals also observed partially converted into malachite. The brilliance of both minerals is really good, with superb aesthetics. From a mine not well represented in collections and which nowadays is difficult to obtain fine mineral specimens.
Size: 5,1 x 4,7 x 3,5 cm.
Found in 2007.
RM554 Azurite with malachite pseudomorph after azurite
Dzhezkazgan Mine, Dzhezkazgan, Karagandy, Karaganda Oblast', KazakhstanA floater aggregate of lanceolated sharp azurite crystals with an excellent color and luster, with small malachite pseudomorph after azurite growths. From a mine not well represented in collections.
Size: 3,5 x 3.0 x 2,7 cm.
Found in 2007.
RM549 Djurleite with chalcocite and chalcopyrite
Dzhezkazgan Mine, Dzhezkazgan, Karagandy, Karaganda Oblast', KazakhstanIn this specimen we observe groups of brilliant galena crystals showing complex forms with parallel growths. Accompanied by some isolated groups of djurleite crystals, those are distinguished by having less brilliance, greyish tone and iridiscent reddish reflections. Prisms are presented as complex forms, rich in faces, with striations and twinned. Djurleite is an uncommon copper sulfide closely related to chalcocite. Published in LAPIS (2014).
Size: 7,5 x 5,0 x 3,0 cm.
Main crystal: 8 x 3 mm.
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