Rosell Minerales
RM3099 Doubly terminated quartz with sphalerite
Huayllapon mine, Pasto Bueno, Pallasca, Ancash, PerúRich group of quartz crystals, translucent to hyaline, and with the terminal faces of the rhombohedron different from the usual ones. Among them, a very good size doubly terminated crystal stands out, well defined and with the faces of the prism with striations perpendicular to the main axis. They are disposed on a matrix with quartz and sphalerite crystals.
Size: 11.7 x 8 x 7.4 cm.
Main crystal: 10.9 x 1.5 cm.
RM2992 Arsenopyrite and chalcopyrite
Julcani Mine, Julcani, Angaraes, Huancavelica, PerúThese specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy hundreds of arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with dull luster, but gold tone, also well-defined and twinned. Brilliance and quality. Good sized specimen.
Size: 11,5 x 5.7 x 4.4 cm.
RM2991 Arsenopyrite and chalcopyrite
Julcani Mine, Julcani, Angaraes, Huancavelica, PerúThese specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy hundreds of arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with luster and gold color, also well-defined and twinned. Brilliance and quality.
Size: 6.1 x 5.6 x 2.7 cm.
RM2947 Hübnerite, pyrite, and quartz
Julcani, Angaraes, Huancavelica, PerúVery esthetic miniature formed by a group of quartz crystals covered by beveled cubic pyrite on which various tabular crystals of hübnerite stand out, well defined and with a very visible red transparence. Specimen from the Joan Astor collection, acquired in 1982 from Bailey Minerals (Ángel Jesús Talabán García, Segovia 1942-Madrid 2007).
Size: 3.5 x 2.8 x 2.7 cm.
Main crystal: 9 mm.
Found in ±1982.
Col. Joan Astor (Barcelona).

RM2946 Pyrite
Quiruvilca Mine, Quiruvilca, Santiago de Chuco, La Libertad, PerúDruse of pyrite crystals with faces of the cube and rhobododecahedron, striated faces, complex crystallography, which adds interest to the specimen. Back side is curiously flat. The luster is exceptional, not easy to take photos. The crystals are interpenetrated. A classic from the mine from which the bases for the FIFA football award "Ballon d'Or" are obtained...
Size: 6.5 x 5 x 3.2 cm.
RM2866 Sphalerite, Chalcopyrite, Pyrite and quartz
Huaron mines, Huayllay, Pasco, PerúNumerous well-defined and interpenetrated sphalerite crystals are arranged on a matrix with quartz crystals, accompanied by pyrite crystals. In the upper part, a group of chalcopyrite crystals with some indentation, which allows us to see the color and brilliance.
Size: 6 x 4.4 x 4.3 cm.
Main crystal: 1.6 cm.
Found in ±1984.
Col. Manchion (Barcelona).

RM2862 Chalcopyrite, Sphalerite and Quartz
Casapalca Mine, Casapalca, Huarochiri, Lima, PerúGroup of chalcopyrite crystals, bright, interpenetrated, with well defined edges. On the faces of the crystals we can see small aggregates of crystals, probably tetrahedrite. They are accompanied by sphalerite crystals on matrix. An old piece, from the time of those that are preserved in the Freiberg Mining School Museum.
Size: 6 x 4.8 x 2.2 xm.
Main crystal: 1.7 cm.
Found in ±1985.
Col. Manchion (Barcelona).

RM2838 Bournonite, pyrite, sphalerite and quartz
Quiruvilca Mine, Quiruvilca, Santiago de Chuco, La Libertad, PerúGroup of cyclically twinned bournonite crystals, with a metallic gray color, interpenetrating each other. They are disposed on a matrix of very brilliant octahedral pyrite, partially covered by complex sphalerite crystals.
Size: 6 x 4.5 x 3.8 cm.
RM2841 Pyrite, sphalerite and crandallite
Quiruvilca Mine, Quiruvilca, Santiago de Chuco, La Libertad, PerúGroup of octahedral pyrite crystals, very brilliant and well defined, which are accompanied by complex crystals of sphalerite. On them we observed numerous white globular crandallite aggregates (analyzed by XRD). This combination of minerals is unusual in the deposit, with this phosphate being the first citation.
Size: 5.5 x 5.3 x 2.7 cm.
RM2839 Pyrite, sphalerite and crandallite
Quiruvilca Mine, Quiruvilca, Santiago de Chuco, La Libertad, PerúGroup of octahedral pyrite crystals, very brilliant and well defined, which are accompanied by complex crystals of sphalerite. On them we observed numerous white globular crandallite aggregates (analyzed by XRD). This combination of minerals is unusual in the deposit, with this phosphate being the first citation.
Size: 8.4 x 6.9 x 5 cm.
Main crystal: 18 mm. py
RM2840 Pyrite
Quiruvilca Mine, Quiruvilca, Santiago de Chuco, La Libertad, PerúDruse of pyrite crystals with faces of the cube and rhobododecahedron, with diploid forms, striated faces, complex crystallography, which adds interest to the specimen. The luster is exceptional, not easy to take photos. The crystals are interpenetrated. A classic from the mine from which the bases for the FIFA football award "Ballon d'Or" are obtained...
Size: 9.2 x 6.8 x 4.6 cm.
RM2832 Andradite-Grossular
Distrito de Pampa Blanca, Castrovirreyna, Huancavelica, PerúGood size and rich aggregate of andradite-grosularia crystals with an intense brown color on the surface, but with color zoning, clearer inside. The exterior of the sample shows a dark reddish-brown tone with very well defined trapezohedral crystals, but inside the crystals have a very aesthetic golden tone. Multi-layered bands ranging from reddish brown to green to gold are shown in the fracture zones of the piece. For this reason we prefer to label it as the andradite-grossular series.
Size: 11 x 9.5 x 4.5 cm.
Main crystal: 15 mm.
Found in 2020.
RM2828 Orpiment
Quiruvilca Mine, Quiruvilca, Santiago de Chuco, La Libertad, PerúVery aesthetic specimen that shows two generations of orpiment. One with an intense orange color, formed by numerous brilliant crystals. A second generation formed by crystals that cover the arsenopyrite-pyrite matrix, with a darker tone. A different sample from this classic Peruvian mine.
Size: 8 x 6.3 x 3.8 cm.
RM2601 Römerite with coquimbite, krausite...
Javier Ortega Mine, Huachuas, Lucanas, Ayacucho, PerúIn this specimen we can observe brilliant aggregates of brown transparent römerite crystals, a very rare iron sulphate. They are accompanied by coquimbite showing an intense violet color under fluorescent light or LED type. They're accompanied by yellow metavoltine/copiapite crystals, along with minor fibrous halotrichite. Note that under the magnifying glass we can navigate in a world of brilliant crystals, some of which of krausite species (yellowish to grey transparent). We left this identification pleasure to the collector. Regarding its environmental stability, this sample has been stored during more than eight years without further alteration.
Size: 6.1 x 5.5 x 4.6 cm.
Found in 03/2010.
RM2491 Epidote
Rosario Mabel claim, Pampa Blanca, Castrovirreyna, Huancavelica, PerúEpidote crystal, dark olive green in colour, very bright, with defined terminations, striking lighter green reflections and many flashes of greenish-yellow internal fire. Excellent specimen of Peruvian epidote.
Size: 3.7 x 2.1 x 1.8 cm.
Found in 2019.
RM2492 Epidote
Rosario Mabel claim, Pampa Blanca, Castrovirreyna, Huancavelica, PerúGood size epidote crystal, dark olive green in colour, very bright, with defined terminations, striking lighter green reflections and many flashes of greenish-yellow internal fire. Excellent specimen of Peruvian epidote.
Size: 4.8 x 2.8 x 2.6 cm.
Found in 2019.
RM2408 Rhodochrosite, tetrahedrite, pyrite and quartz
Casapalca Mine, Casapalca, Huarochiri, Lima, PerúOn a rich group of rosettes of rhodochrosite, with a pinkish tone and a silky luster, there are various crystals of tetrahedrite, defined, brilliant and contrasting on the matrix.
Size: 6.7 x 5 x 3.2 cm.
Main crystal: 3 mm. Td
Found in ca. 1985.
Col. J. Astor (Barcelona).

RM2478 Rhodochrosite and quartz
Huaron mines, Huayllay, Pasco, PerúGroups of aggregates of rhodochrosite crystals, of a delicate pink color, brilliant. They are accompanied by colorless aggregates of small quartz crystals. Very aesthetic.
Size: 5.6 x 4.1 x 2.2 cm.
Found in ca. 1988.
Col. Antonio Trigo (Mataró).

RM2216 Rhodochrosite
Uchucchacua mina, Oyón, Lima, PerúGroup of rhodochrosite crystals with a uniform pink color, with well-defined rhombohedron echeloned and scalenohedron forms. Good gemmy transparence. They are accompanied by other smaller rhodo crystals. On a solid matrix with quartz crystals with inclusions and manganese oxides.
Size: 6.5 x 3.5 x 3.4 cm.
Main crystal: 6 mm.
RM2215 Rhodochrosite
Uchucchacua mina, Oyón, Lima, PerúGroup of rhodochrosite crystals with a uniform pink color, with well-defined rhombohedron echeloned and scalenohedron forms. Good gemmy transparence. They are accompanied by other smaller rhodo crystals. On a solid matrix with quartz crystals with inclusions and manganese oxides.
Size: 4.8 x 3.2 x 3.2 cm.
Main crystal: 5 mm.
RM2170 Galena, Chalcopyrite and quartz
Huaron mines, Huayllay, Pasco, PerúAn old specimen of this Peruvian mine that shows a large group of cubic galena crystals, interpenetrated, with its characteristic gray tone. They have stepped growths on the faces and some natural cavities, which give them a differentiated appearance.
Size: 11 x 9 x 6 cm.
Main crystal: 2.0 cm.
Found in 11/1985.
#185 Col. Manchion (Barcelona).

RM2162 Chalcopyrite with quartz
Huaron mines, Huayllay, Pasco, PerúGroup of chalcopyrite crystals, one of good size, with defined shapes arranged on quartz hyaline crystals. An aesthetic miniature.
Size: 5.2 x 3.5 x 2.5 cm.
Main crystal: 1.6 cm.
Found in ±1987.
#360 Col. Manchion (Barcelona).

RM2120 Bournonite with pyrite, galena
Huanzala Mine, Huallanca, Dos de Mayo, Huánuco, PerúVery aesthetic specimen formed by numerous bournonite crystals, excellent luster, sharps and cyclically twinned. They are accompanied by cube octahedral galena crystals with rounded faces and edges and brilliant pyrite. Nice miniature.
Size: 4.5 x 3.6 x 2.4 cm.
Main crystal: 8 mm.
Found in 2019.
RM2121 Bournonite with pyrite, sphalerite
Huanzala Mine, Huallanca, Dos de Mayo, Huánuco, PerúIn a matrix formed by octahedral pyrite crystals, very bright and faceted, various groups of sphalerite crystals are disposed on which the bournonite cyclic twins stand out. They are accompanied by small quartz crystals and hydrozincite globules. A very aesthetic piece.
Size: 5.2 x 3.8 x 3.2 cm.
Main crystal: 6 mm.
Found in 2019.
RM2036 Rhodochrosite
Uchucchacua mina, Oyón, Lima, PerúGroup of rhodochrosite crystals with a uniform pink color, with well-defined rhombohedron echeloned and scalenohedron forms. Good gemmy transparence. They are accompanied by other smaller rhodo crystals. On a solid matrix with quartz crystals with inclusions and manganese oxides.
Size: 4.8 x 4.6 x 4 cm.
Main crystal: 1 cm.
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