Rosell Minerales

Group of cubic crystals of fluorite, of good size, with tile growths on the faces. Good brilliance, transparent to translucent. Pinkish-purple color, more blue under LED light. It shows a marked geometric color zoning on the edges. With a baryte book-shape aggregate.

Size: 8.3 x 4.2 x 6.7 cm.
Main crystal: 2.8 cm.

Very aerial specimen formed by groups of cubic fluorite crystals. Very well defined faces and edges, with polysynthetic growths and disposed on a matrix with quartz crystals. It is accompanied by a tabular baryte.

Size: 8.5 x 5.2 x 4.5 cm.
Main crystal: 1.4 cm.

Group of interpenetrating fluorite crystals, with an intense coluor that varies according to the type of incident light. From this classic Asturian mining area.

Size: 6.1 x 4 x 3.5 cm.

A very good size specimen formed by numerous lanceolated baryte crystals, with very good definition of faces and edges. Between transparent to translucent and with a yellowish tone with zoning. They are disposed very aerial on the matrix, with crystals of calcite and fluorite with honey tones. Fluorite is active under LW-UV light. An exceptional specimen for this classic Asturian mine.

Size: 12 x 11.7 x 11 cm.
Main crystal: 2.2 cm.

Fluorescent under long wave UV

Specimen formed by aggregates of radial aragonite crystals, with very aesthetic bands of delicate blue color. This old specimen (1980s) is labeled as collected in Peñamellera, Asturies (Spain). Other specimens like this and from the same years where labelled as collected in this Asturian locality. A curiosity from the former Joan Astor collection (Barcelona). With original labelled box.

Size: 6 x 5.5 x 4.7 cm.
Found in ±1985.

Fluorescent under long wave UV

Tetrahedrite crystals from this Asturian mine are well known and prized by Spanish collectors. In this sample we have tetrahedral crystals, one of them predominant, in which the tris-tetrahedron shapes seem to point. Good size and partially covered by malachite. X ray diffraction analysis (we will send to the buyer) has shown the presence of digenite associated with the alteration of the tetrahedrite. A classic.

Size: 3.1 x 2.7 x 2.5 cm.
Main crystal: 1 cm.

Analyzed specimen with report

As M. Calvo indicates in his work (Minas y mInerales de España), in the area of Bedures hill (or Vidures), in the municipality of Vegadeo, there are several mining works, some of them very ancient, in which various lead mineral species have been described and among them, pyromorphite stands out. This piece we propose, found by chance in a mineral show far from the mine that saw it born, shows a matrix of milky quartz, with iron oxides and a black layer of coronadite in one side. We can observe also several crystals of green pyromorphite on the surface. Some form divergent aggregates, others isolated, but with an intense green color, with zoning in some of them. They show hexagonal prisms truncated by pinacoidal faces and parallel growth aggregates. A very rare specimen for this Spanish locality.

Size: 5.5 x 4.8 x 4 cm.

As M. Calvo indicates in his work (Minas y mInerales de España), in the area of Bedures hill (or Vidures), in the municipality of Vegadeo, there are several mining works, some of them very ancient, in which various lead mineral species have been described and among them, pyromorphite stands out. This piece we propose, found by chance in a mineral show far from the mine that saw it born, shows a matrix of milky quartz, with iron oxides and, on it, a black layer of coronadite. We can observe also several crystals of green pyromorphite dot its surface. Some form divergent aggregates, others isolated, but with an intense green color, with zoning in some of them. They show hexagonal prisms truncated by pinacoidal faces and parallel growth aggregates. A high quality and very rare specimen for the locality.

Size: 12.0 x 9.7 x 6.6 cm.
Main crystal: 3 mm.

Stalactitic to botryoidal aggregates of smithsonite of yellowish tone, partially covered by a second generation of the same species, colorless to white. This mine is located in the Magdalena concession, near Robriguero, with gallery and open pit works. The mine was worked until 1924 to obtain calamine and some galena. Nowadays it is very difficult to find samples.

Size: 6.2 x 6 x 5.2 cm.

Rich group of sharp fluorite crystals, cubic, with polysynthetic growths on the faces. The colour between violet to bluish-grayish, unusual in this mine. Translucent, allowing to see the color zoning. Good size.

Size: 8 x 7.5 x 4 cm.
Main crystal: 22 mm.

Col. A. Arguijo (L'Hospitalet de Llobregat).

An esthetic specimen, cubic fluorite crystalsfluorite, with beveled edges, of blue to purple tone according to the incident light. They present some nips when extracted. Disposed on a matrix of baryte crystals covered by small brilliant quartz crystals.

Size: 7.6 x 5 x 3.5 cm.
Main crystal: 20 x 19 mm / 18 x 15 mm.

Very rich specimen formed by several rosettes of tabular to lenticular azurite crystals, intense color and contrasting on the matrix, with quartz. Its origin is due to the alteration of the chalcopyrite and are disposed on a silicified limestone matrix. Very good piece for the locality.

Size: 8 x 5.4 x 4.4 cm.

Col. A. Arguijo (L'Hospitalet de Llobregat)

Group of fluorite crystals showing sharp edges and cube faces with polysynthetic growths. Good color, intense between purple to violet, depending on the incident light and with geometric colour zoning.

Size: 7.5 x 3.7 x 4.5 cm.
Main crystal: 3.7 cm.
Found in ±1980

Col. A. Arguijo (L'Hospitalet de Llobregat)

Group of fluorite crystals showing sharp edges and cube faces with polysynthetic growths. Good color, intense between purple to violet, depending on the incident light and with geometric colour zoning.

Size: 6.2 x 6 x 4.2 cm.
Main crystal: 1.5 cm.

Col. A. Arguijo (L'Hospitalet de Llobregat)

Group of fluorite crystals, cubic shape, brilliance, transparence and violet colour with geometric zoning. Some of them presents minor nicks, without affecting the whole. They are accompanied by barite crystals partially covered by tiny, shiny quartz crystals.

Size: 8.6 x 8.4 x 5 cm.
Main crystal: 2 cm.

Nowadays, graphite specimens from this classic Asturian locality are very difficult to be found. These specimens show contiguous columns, with greasy luster and defined hexagonal forms. The crystal habit of natural graphite in most cases is determined by its highly anisotropic, layered structure. However, anomalous habits of graphite,determined not only by its structure, but also by the peculiarities of the growth environment, are frequently encountered, and optimization of the space available when solidifying forming columns.

Size: 6.5 x 3.0 x 3.0 cm.
Found in ±1985.

Nowadays, graphite specimens from this classic Asturian locality are very difficult to be found. These specimens show contiguous columns, with greasy luster and defined hexagonal forms. The crystal habit of natural graphite in most cases is determined by its highly anisotropic, layered structure. However, anomalous habits of graphite,determined not only by its structure, but also by the peculiarities of the growth environment, are frequently encountered, and optimization of the space available when solidifying forming columns.

Size: 6.7 x 4.4 x 3.5 cm.
Found in ±1985.

Nowadays, graphite specimens from this classic Asturian locality are very difficult to be found. These specimens show contiguous columns, with greasy luster and defined hexagonal forms. The crystal habit of natural graphite in most cases is determined by its highly anisotropic, layered structure. However, anomalous habits of graphite,determined not only by its structure, but also by the peculiarities of the growth environment, are frequently encountered, and optimization of the space available when solidifying forming columns.

Size: 7.4 x 3.2 x 2.3 cm.
Found in ±1985.

Nowadays, graphite specimens from this classic Asturian locality are very difficult to be found. These specimens show contiguous columns, with greasy luster and defined hexagonal forms. The crystal habit of natural graphite in most cases is determined by its highly anisotropic, layered structure. However, anomalous habits of graphite,determined not only by its structure, but also by the peculiarities of the growth environment, are frequently encountered, and optimization of the space available when solidifying forming columns.

Size: 2.8 x 2.7 x 1.8 cm.
Found in ±1985

Tetrahedrite crystals of this Asturian mine are well known and appreciated by Spanish mineral collectors. In this specimen we have several tetrahedral crystals, also tristetrahedron shape could be appreciated. Good size and partially coated by malachite. A Spanish classic.

Size: 7.2 x 6.0 x 5.4 cm.
Main crystal: 13 mm edge/arista

Group of cubic crystals of fluorite, with transparency, color between purple to violet, with polysynthetic growths on the faces, very defined. A Spanish classic.

Size: 12.5 x 8.5 x 5.5 cm.
Main crystal: 25 x 22 mm.

Historically the most representative fluorite specimens from mina Moscona are yellow, recently some of violet tones have been collected. This ancient specimen is one of the few that appeared in the mine with this pink to purple color, with zoning. It is a floater, formed by growths of cubic crystals with faces with polysynthetic growths, very brilliant and translucent. They are partially covered with sharp tabular barite crystals, between transparent to opaque on the outer edges. No damage, good size and fluorescent (UV-LW). A very unusual piece for this classic Spanish mine, from a former German collection.

Size: 16 x 14 x 6.5 cm.

Fluorescent under long wave UV

Nowadays, graphite specimens from this classic Asturian locality are very difficult to be found. These specimens show contiguous columns, with greasy luster and defined hexagonal forms. The crystal habit of natural graphite in most cases is determined by its highly anisotropic, layered structure. However, anomalous habits of graphite, determined not only by its structure, but also by the peculiarities of the growth environment, are frequently encountered.

Size: 6.0 x 3.2 x 2.9 cm.
Found in ±1985

Nowadays, graphite specimens from this classic Asturian locality are very difficult to be found. These specimens show contiguous columns, with greasy luster and defined hexagonal forms. The crystal habit of natural graphite in most cases is determined by its highly anisotropic, layered structure. However, anomalous habits of graphite,determined not only by its structure, but also by the peculiarities of the growth environment, are frequently encountered.

Size: 10.5 x 3.6 x 3 cm.
Found in ±1985

Group of calcite crystals, defined, transparent and brilliant, with a developed prism and negative rhombohedron top terminal faces. On a matrix of barite and calcite. They were collected in a  from open-air mining works in the area of Duyos. Nowadays, these samples from this Asturian mine are very difficult to obtain. They come from the former Manchion collection (with label).

Size: 4.9 x 3.0 x 2.8 cm.
Main crystal: 1.5 x 0.4 cm.
Found in 01/1984.

Col. J.M. Manchion (Barcelona) - No.63 (J. Viñals).
Calcite is fluorescent under LW-UV.