Rosell Minerales
RM2558 Parasymplesite, arseniosiderite and adamite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoRich specimen of parasymplesite from this classic Mexican mine. Several divergent aggregates of prismatic to tabular parasymplesite crystals, with a light green color on the surface and a very dark green, almost black, color inside. They are disposed on a goethite matrix with cavities layered by small honey-colored arseniosiderite crystals and adamite. This specimen belongs to the Joan Astor collection (Barcelona), with a handwritten label and another typewritten.
Size: 6.5 x 5.4 x 3.2 cm.
Main crystal: 3 mm.
Found in ±1977.
Col. J. Astor, Barcelona.
Classic locality

RM2499 Ojuelaite with natropharmacosiderite and arsenopyrite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoOjuelaite is a very rare zinc and iron arsenate named after the world famous Ojuela mine (Mexico), its type locality. The species, which belongs to the arthurite group, was accepted by the IMA in 1982 and is isostructural with whitmoreite. It is found in the oxidation zone of the Ojuela deposit, associated with scorodite, adamite and / or smithsonite.
In the article published by Cesbron, Romero and Williams [La mapimite et l'ojuélaïte, deux nouveaux arséniates hydratés de zinc et de fer de la mine Ojuela, Mapimi, Mexique. Bulletin de Minéralogie 104, 582-586. (1981)] two new minerals were described, mapimite and ojuelaite. The studied specimens were obtained thanks to the well-known Mexican mineralogist Don Manuel Romero.
In this specimen, ojuelaite is associated with natropharmacosiderite-pharmacosiderite, as shown by the XRD attached. The arsenopyrite matrix is partially covered by aggregates of natropharmacosiderite-pharmacosiderite crystals, with a green color, brilliant and with cubic shapes. The ojuelaite of this specimen is showing radial fibrous aggregates, with a silky luster and yellow color. We will send the analyzes to the buyer. Former Marcus J. Origlieri collection.
We can say that this specimen is among the best worldwide for this species, due to its size, richness, aesthetics and quality.
Size: 10 x 7.6 x 2.9 cm.
Main crystal: 3 mm rad. aggr.
Coll. Marcus J. Origlieri.
Type Locality

RM2476 Smithsonite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoGlobular aggregate of good size of smithsonite crystals. Very brilliant, translucent and with some goethite as a matrix. From this classic Mexican mine. It belongs from the A. Trigo Collection (Mataró).
Size: 3.9 x 3.5 x 2 cm.
Found in ca. 1988.
Col. Antonio Trigo (Mataró).

RM2236 Fluorapatite and Opal
Cerro de Mercado Mine, Victoria de Durango, Municipio de Durango, Durango, MexicoGroup of prismatic fluorapatite crystals, with faces of the prism and the hexagonal dipyramids. The transparence and brilliance areexcellent and the yellow color is very intense. This specimen was photographed in some books that Joan Astor published in issuu [online page 86]. It is accompanied in the matrix with hyaline opal aggregates. It was acquired in 1980 from Bailey Minerals (Ángel Jesús Talabán García, Segovia 1942-Madrid 2007). A very aesthetic and good size piece.
Size: 8 x 5 x 4 cm.
Main crystal: 2 cm.
Found in 1970-80's.
Col. Joan Astor.

RM2176 Topaz with quartz and opal
Artroyos mine, Sierra de San Francisco, Potrillos, Coneto de Comonfort, Durango, MexicoGroup of topaz crystals of good size, combining vertical prisms with dipyramidal faces, and small pinacoidal forms. Between transparent to translucent, with colour zoning between the core and the terminal faces. They are on a matrix of volcanic rock with growths of opal.
Size: 4.6 x 3.4 x 3.2 cm.
Main crystal: 3.2 cm.
Found in ±1986.
#251 Col. Manchion (Barcelona).

RM2044 Rosasite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoGlobular aggregates formed by acicular crystals of rosasite, with colours between deep green and light bluish green. Very aesthetic and disposed on a matrix of goethite. From this classic Mexican mine.
Size: 8.5 x 7 x 4.8 cm.
Col. A. Arguijo (L'Hospitalet de L.)
RM1993 Smithsonite with adamite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoVery, very aesthetic specimen, unusual, showing two globular aggregates of smithsonite, colorless, transparent that let us see a whitish crystal aggregate core, with very curious growth. They are accompanied by small crystals of the same species in the form of globular grains. To give a touch of color and quality, several aggregates of olive green adamite crystals, visible terminal faces, bright, translucent and sprinkling the goethite matrix. It is an exceptional and rare old material from the Manchion Collection. Probably this specimen comes from the Palomas Oriente area of the mine. Pure aesthetics... With the label from Manchion Collection.
Size: 7.6 x 5.2 x 2.6 cm.
Main crystal: 17 mm. glob. aggreg.
Found in 1988.
Col. Manchion #378, 1988, Kucera.

RM1916 Adamite with goethite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoVery esthetic specimen formed by some groups of prismatic crystals of adamite, contrasting on a matrix of goethite. The crystals have a very uniform yellow color, with transparency, with very well defined faces and edges and forming rosettes. We can also observe isolated doubly terminated crystals and some almost colorless. A pleasure under the loupe magnifying glass. Good size.
Size: 7.5 x 7.5 x 3.2 cm.
Main crystal: 20 mm aggreg.
Fluorescent under long wave UV
RM1915 Adamite with goethite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoVery esthetic specimen formed by some groups of prismatic crystals of adamite, contrasting on a matrix of goethite. The crystals have a very uniform yellow color, with transparency, with very well defined faces and edges and forming rosettes. We can also observe isolated doubly terminated crystals and some almost colorless. A pleasure under the loupe magnifying glass. Good size.
Size: 8 x 7.5 x 4 cm.
Main crystal: 25 mm aggreg.
Fluorescent under long wave UV
RM1863 Hemimorphite with mimetite
Ojuela mine, ↑Level 7, Mapimí, Municipio de Mapimí, Durango, MexicoVery aesthetic fan-shaped groups of transparent hemimorphite crystals, with a very good brilliance and excellent terminations. Accompanied by small aggregates of yellow greenish mimetite crystals. On a limonite matrix.
Size: 9 x 4 x 3.5 cm.
Main crystal: 14 x 4 mm
Found in ± 2004.
Col. M. Marí (Castelló).
Fluorescent under long wave UV
RM1852 Adamite, var. manganoan adamite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoGroup of crystals of adamite, which show a geometric color zoning from yellow to violet due to the presence of manganoan adamite, a variety of adamite rich in manganese. Thios cation gives to these specimens a violet to purple core. Very bright, defined and with transparence that allows us to see this species. Nice and aesthetic specimen.
Size: 6.5 x 4.5 x 3.5 cm.
Main crystal: 7 x 2 mm.
Classic locality
RM1851 Adamite, var. manganoan adamite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoGroup of crystals of adamite, which show a geometric color zoning from yellow to violet due to the presence of manganoan adamite, a variety of adamite rich in manganese. Thios cation gives to these specimens a violet to purple core. Very bright, defined and with transparence that allows us to see this species. Nice and aesthetic specimen.
Size: 5.5 x 4.5 x 2.5 cm.
Main crystal: 8 x 2 mm.
Classic locality
RM1850 Legrandite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoGemmy and lustrous sprays of rich yellow legrandite needles, aesthetically jackstrawed in the vug, contrasting with the gossan matrix. Good color and fanshaped transparent and defined crystals.
Size: 6.8 x 4.5 x 4.4 cm.
Main crystal: 15 x 11 mm aggreg.
Found in 2017
Classic locality
RM1849 Legrandite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoThis specimen of legrandite shows us a group of sharp crystals of this rare zinc arsenate, with an intense orange-yellow color. It is common that some crystals appears fractured, but in this sample there are several perfect prismatic crystals, undamaged, brilliant and with an incredible transparence. I personally like isolated crystals and this piece is one of them. Good size, brightness and aesthetics, very representative for the species. Accompanied by elongated smithsonite white crystals.
Size: 7 x 4 x 3.5 cm.
Main crystal: 4 mm.
Found in 2017
Classic locality

RM1844 Aurichalcite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoVery aesthetic specimen formed by acicular globular aggregates and fan-shaped aurichalcite crystals, with an intense blue color. They are filling the cavities of the limonite matrix with a intense contrast. With an old label from this ancient natural science store located in the center of the city of Barcelona.
Size: 7.8 x 3.5 x 3.5 cm.
Col. J.M. Manchion, Barcelona.

RM1608 Hydrozincite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoThis is a esthetic and good size hydrozincite specimen, very rich from Ojuela mine. Quite attractive, with little snowy balls formed by several crystals of the mineral have formed in shallow recesses in a contrasting matrix of limonite. Really nice under loupe... Hydrozincite forms in the oxidation zones of zinc deposits as masses or crusts. Excol. Hubin (B).
Size: 5 x 5 x 4 cm
Main crystal: 4 mm agreg.
Excol. Hubin (Neupré, Belgique)
Fluorescent under short wave UV

RM1644 Adamite & tsumcorite-arsenbrackebuschite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoAesthetic group of prismatic crystals of adamite, with good transparence and intense color. Crystals forming sheaves and isolated, defined. They are disposed on a matrix of goethite, with cavities partially covered by small globular aggregates of yellow tsumcorite-brackebuschite.
Size: 10.8 x 8.5 x 6.5 cm.
Main crystal: 15 x 2 mm.
RM1542 Mimetite, tsumcorite-arsenbrackebuschite
Ojuela mine, Mapimí, Mun. de Mapimí, Durango, MexicoRich group of very elongated mimetite crystals, some of them doubly terminated, brilliant, translucent and with a soft yellow tone. Mimetite specimens with this shape are unusual in Ojuela mine, usually globular. They are accompanied by aggregates of tiny yellow to orange crystals of tsumcorite-arsenbrackebuschite. They are disposed in a cavity of the goethite matrix. The specimen has been analyzed and the results will be sent to the buyer. It has been published in the mineral magazine "Paragénesis" (1-2017).
Size: 7.0 x 5.5 x 5.0 cm.
Main crystal: 20 x 2 mm.
Analyzed specimen with report

RM1503 Adamite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoExceptional specimen formed by several groups of prismatic crystals of adamite, which are disposed forming rosettes on a matrix of goethite. Crystals have a very uniform yellow color, with transparence, and very defined faces and edges. Pure aesthetic.
Size: 7.5 x 6.4 x 2.5 cm.
Main crystal: 6 mm.
RM1189 Dobly terminated adamite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoSuperb adamite crystal, vey brilliant, yellow color, curved faces and showing terminal facets on both ends. It is disposed in a very esthetic form on a matrix of goethite. Good size and quality.
Size: 5.3 x 2.7 x 2.5 cm.
Main crystal: 22 x 10 mm.
Fluorescent under LW-UV and SW-UV lights
RM869 Mimetite with Hemimorphite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoA very rich group of mimetite globular aggregates, with yellow tone and brilliant. Acompanied by hemimorphite lanceolated crystals of hemimorphite, transparence and brilliance.
Size: 8.8 x 7.3 x 4.8 cm.
RM1068 Wulfenite with mottramite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoA rich group of doubly terminated crystals of wulfenite showing prismatic growth truncated by the terminal pinacoid. They show an intense orange to yellow color and are disposed on a matrix of limonite partially covered by olive green mottramite. A good size specimen and very aesthetic.
Size: 10.0 x 9.8 x 5.5 cm.
Main crystal: 8 x 3 mm.
RM911 Hemimorphite with calcite and mimetite
Ojuela mine, Nivel 7, Mapimí, Municipio de Mapimí, Durango, MexicoGroups of brilliant hemimorphite crystals forming fan-shaped aggregates, transparent, colorless and very well defined lanceolated crystalline forms. They are accompanied by small rhombohedral calcite crystals and small mimetite globular aggregates with a yellow tone. On a limonite matrix.
Size: 5.5 x 5.3 x 3.8 cm.
Main crystal: 14 x 4 mm.
Found in 2004.
RM922 Aurichalcite with calcite
Ojuela mine, Mapimí, Mapimí, Durango, MexicoIn this specimen we can observe two generations of aurichalcite. A first generation as small rosettes formed by lanceolate greenish crystals and second with thiner crystals, needle-like, some of which are included in rhombohedral calcite crystals, with a light blue color. Stand in a very aesthetic way on the matrix of goethite. A very balanced sample.
Size: 7.5 x 5.5 x 3.8 cm.
RM808 Rosasite with calcite
Ojuela mine, Mapimí, Municipio de Mapimí, Durango, MexicoA huge size specimen showing botryoidal aggregates of rosasite, with a velvet appearance and intense blue-green pastel tones. They are peppered with small but brilliant calcite crystals with a pseudooctahedron shape. On a limonite matrix.
Size: 9,0 x 7,5 x 4,5 cm.
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