Rosell Minerales

Very aesthetic group of aerial malachite crystals pseudomorphic after azurite showing a tabular shape with rounded faces. Color is deep green with a very well marked velvet luster. Good specimen from Milpillas.

Size: 5,5 x 4,3 x 4,0 cm.
Main crystal: 3,7 x 2,6 cm.

A 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.

Group of lenticular calcite crystals, very transparent and brilliant, with an uncommon shape for the species due to the flattened hexagonal shape. Disposed very aerial on the limonite matrix with hemimorphite.

Size: 8,8 x 7,4 x 5,3 cm.
Main crystal: 27 x 18 mm.

A rich druse of cuprian adamite crystals which is completely covering the cavity in limonite. With stalactitic growths showing an intense blue-green color. They are peppered by small white globular aggregates of smithsonite, along with areas of rosasite green. Accompanied by globular aggregates of conichalcite and very defined cuprian adamite crystals. An interesting specimen with good size.

Size: 8,0 x 5,5 x 5,0 cm.

A huge size cuprian adamite specimen, formed by two druses of very brilliant small crystals with an intense brilliance and characteristic color, with stalactitic growths. On the back size of the specimen there are some isolated and more developed crystals of this arsenate. Really good for diplay.

Size: 14,2 x 7,5 x 5,5 cm.
Found in ca. 2007.

Globular aggregates of mimetite crystals, with an intense luster and yellowish honey color. It is a floater and it back side there are some spherical vugs those are difficult to interpretate. Take a look. An aesthetic miniature from this famous Mexican mine.

Size: 4,3 x 3,3 x 2,3 cm.

A nice cluster of topaz crystals with very well defined faces and edges, with a developed prism, cuted by the basal pinacoid and other order prism faces on top. The tile color presents zoning, more intense in pinacoidal faces. From transparent to translucent, with good brilliance. With an aesthetic opal-AN aggregate on one of the main crystals. Opal presents intense green fluorescence under SW-UV light. Rutile inclusions can be observed as thin needles in the topaz prisms and in the opal. One of the topaz crystals presents a minor damage. They are very aerial disposed on a rhyolite matrix. Nice miniature. It is very interesting the origin of the word tepetate (tepetatl).

Size: 2,5 x 2,5 x 2,5 cm.
Main crystal: 11 x 7 mm.

Fluorescent under LW-UV and SW-UV lights

A nice cluster of topaz crystals with very well defined faces and edges, with a developed prism, cuted by the basal pinacoid and other order prism faces on top. The tile color is very intense in some of them and with color zoning in others, more intense in pinacoidal faces. From transparent to translucent, with good brilliance. Rutile inclusions can be observed as thin reddish needles inside the prism. They are very aerial disposed on a rhyolite matrix. Nice miniature. It is very interesting the origin of the word tepetate (tepetatl).

Size: 2,5 x 2,5 x 1,8 cm.
Main crystal: 10 x 3 mm.

Groups of fan-shaped adamite crystals with good color, more intense at the terminal faces, from light yellow to yellowish green. Good brilliance and perfect disposition on the matrix.

Size: 4,3 x 3,9 x 3,8 cm
Main crystal: 12 x 10 mm.

Fluorescent under LW-UV and SW-UV lights

A great and aesthetic wulfenite specimen from well-known Ojuel mine. Two groups of wulfenite crystals with parallel growth, one of them with prismatic form and intense orange color and brilliance. Attracts our attention for its complex terminal acute faces and it is aesthetically disposed and contrasts with the limonite matrix. They are accompanied by a group of green globular aggregates of mimetite. Both minerals are fluorescent. To be displayed.

Size: 5,8 x 5,0 x 4,5 cm.
Main crystal: 18 x 8 mm.

Fluorescent under long wave UV

Globular aggregates of mimetite crystals, with an intense luster and yellowish honey color. It is a floater and it back side there are some spherical vugs those are difficult to interpretate. Take a look. An aesthetic miniature from this famous Mexican mine.

Size: 3,9 x 2,5 x 2,0 cm.

This specimen shows a rich group of lanceolated austinite crystals with an excellent transparence and brilliance and a slight greenish tone. They contrast on the goethite matrix layered by several sharp adamite crystals, defined, brilliant and with a yellow to orange color. A sample with aesthetic and mineralogical interest for the quality of the austinite and its paragenesis.

Size: 5,5 x 4,5 x 3,0 cm.
Main crystal: 4 x 1 mm.
Found in 2008.

Precio reducido-Reduced price 75€

This speciemn shows various aggregates formed by several austinite lanceolate crystals. Good transparence, excellent brilliance and slight greenish tone. On starkly contrasting matrix with goethite-hematite. This specimen has a good quality for the species. I recommend the buyer to use a magnifying lens to enjoy the small crystals that are disposed on the matrix. Enjoy it!

Size: 6,5 x 5,3 x 4,0 cm.
Main crystal: 9 x 2 mm.
Found in 2008.

This nice speciemn shows various globular aggregates formed by several austinite lanceolate crystals in radial growth. Good transparence, excellent brilliance and almost colorless, they are real gems. On starkly contrasting matrix with goethite-hematite and small crystals of adamite. This specimen has a superb quality for the species. I recommend the buyer to use a magnifying lens to enjoy the small crystals that are disposed on the matrix. Good choice.

Size: 5,4 x 5,2 x 2,8 cm.
Main crystal: 12 x 9 mm.
Found in 2008.

Fluorescent under long wave UV

A very rich group of cuprian adamite pseudooctahedral crystals. Well defined faces and edges, excellent brilliance and a green color with bluish tones. Disposed covering a vug on the limonite matrix. Just this specimen was published in mindat and labelled as cuprian austinite, but further analysis indicate that they were cuprian adamite. An excellent specimen.

Size: 8,5 x 4,7 x 3,5 cm.
Main crystal: 2 x 2 mm.
Found in 2008.

Botryoidal aggregates of smithsonite, with a good green color, showing possible rhombohedral forms. If we look carefully we can see several crystals of this zinc carbonate forming this forms. We emphisize on the quality of this specimen.

Size: 7,8 x 5,4 x 4,5 cm.

A very rich botryoidal growths of mottramite, with an excellent dark green color and velvety. These mottramite specimens were recently found in the mina Ojuela and for their quality could be considered a good representative for the species and, of course, the best specimens from this mine. A huge size specimen for the more selected display.

Size: 14,5 x 10,5 x 5,5 cm.
Found in 2012.

A very rich specimen of cuprian adamite, formed by several very sharp pseudooctaedral crystals, with an excellent brilliance and transparence. Color is different than usual for the species and mine, with a green to bluish tones. Adamite crystals are partially covering a vug in the goethite matrix. A display huge size specimen and a very good aesthetics. From this classic classic Mexican mine.

Size: 8,5 x 7,2 x 4,7 cm.
Main crystal: 3 x 2 mm.

Fluorescent under long wave UV

An excellent sample of a calcite showing a marked butterfly twin. Two twinned crystals in the same sample. Good transparence and very aerial disposed. This calcite comes from the deposits of optical calcite of José María Patoni. These mining works are famous worldwide for the purity, transparence and crystallographic complexity of its calcite crystals. Nice miniature.

Size: 4,0 x 3,3 x 1,6 cm.
Main crystal: 23 x 14 mm.
Found in 2004

Fluorescent under long wave UV

Group of very sharp adamite crystals showing an intense brilliance and color between yellow to colorless. Different orders prisms are present, isome of the end faces can remind the octahedron. Thus, in the specimen we can see very elongated crystals, some other flattened and almost equidimensional. Transparence and luster are really good. Crystals are disposed very aerial on a goethite matrix. This sample belongs to a German collection.

Size: 7,5 x 6,8 x 4,1 cm.
Main crystal: 13 x 10 mm.

Old col. Nr. 2704.
Fluorescent under LW-UV and SW-UV lights

On a matrix totally covered by sharp quartz crystals, some of them with small inverse scepters, one of them more developed shows a perfect scepter shape. An elongated hyaline quartz prism with a scepter on the top with a pale amethystine tone. Really nice miniature.

Size: 5,2 x 4,0 x 3,8 cm.
Main crystal: 2,8 x 1,0 cm
Found in 2009

This elongated calcite crystal comes from the deposits of optical calcite of José María Patoni. These mining works are famous worldwide for the purity, transparence and crystallographic complexity of its calcite crystals. These specimens were formed by mineral rich hydrothermal fluids flowing through rhyolitic pyroclastic materials, where they found faults and fissures, a perfect place to grow.
This specimen shows faces of the prism, both scalenohedrons and rhombohedrons (positive and negative), echeloned faces and a small apical pinacoid. Excellent transparence and brilliance. A worlwide classic for calcite and crystallography.

Size: 4,6 x 1,8 x 1,3 cm.
Found in 2004

Precio reducido-Reduced price 35€
Fluorescent and phosphorescent under long wave UV

This elongated calcite crystal comes from the deposits of optical calcite of José María Patoni. These mining works are famous worldwide for the purity, transparence and crystallographic complexity of its calcite crystals. These specimens were formed by mineral rich hydrothermal fluids flowing through rhyolitic pyroclastic materials, where they found faults and fissures, a perfect place to grow.
This specimen shows faces of the prism, both scalenohedrons and rhombohedrons (positive and negative), echeloned faces and a small apical pinacoid. Excellent transparence and brilliance. A worlwide classic for calcite and crystallography.

Size: 4,5 x 1,8 x 1,6 cm.
Found in 2004

Precio reducido-Reduced price 30€
Fluorescent and phosphorescent under long wave UV

This elongated calcite crystal comes from the deposits of optical calcite of José María Patoni. These mining works are famous worldwide for the purity, transparence and crystallographic complexity of its calcite crystals. These specimens were formed by mineral rich hydrothermal fluids flowing through rhyolitic pyroclastic materials, where they found faults and fissures, a perfect place to grow.
This specimen shows faces of the prism, both scalenohedrons and rhombohedrons (positive and negative), echeloned faces and a small apical pinacoid. Excellent transparence and brilliance. A worlwide classic for calcite and crystallography.

Size: 5,1 x 1,5 x 1,4 cm.
Found in 2004

Fluorescent under long wave UV

This elongated calcite crystal comes from the deposits of optical calcite of José María Patoni. These mining works are famous worldwide for the purity, transparence and crystallographic complexity of its calcite crystals. These specimens were formed by mineral rich hydrothermal fluids flowing through rhyolitic pyroclastic materials, where they found faults and fissures, a perfect place to grow.
This specimen shows faces of the prism, both scalenohedrons and rhombohedrons (positive and negative), echeloned faces and a small apical pinacoid. Excellent transparence and brilliance. A worlwide classic for calcite and crystallography.

Size: 5,2 x 2,0 x 1,4 cm
Found in 2004

Fluorescent under long wave UV