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RM1757   Calcite

Valnegro quarry, Filón Obdulia, Duyos, Caravia, Asturias, Spain

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.
Price: 45 €Buy
 

RM640   Calcite with fluorite and Baryte

Moscona Mine, Villabona area, Solís, Corvera de Asturias, Asturias, Spain

Curious specimen of calcite from Moscona. Formed by some crystals, one of them predominant, with complex rhombohedrall faces with echeloned growth. Accompanied by tabular barite crystals and on a yellow fluorite matrix.


Size: 8,6 x 7,3 x 4,4 cm.
Main crystal: 28 x 25 mm.

Price: 35 €Buy
 

RM1932   Fluorite with baryte

Moscona mine, Villabona area, Solís, Corvera de Asturias, Asturias, Spain

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
 

RM1539   Fluorite and dolomite

Moscona mine, Villabona area, Solís, Corvera de Asturias, Asturias, Spain

Rich group of fluorite crystals, cubic, transparent and very brilliant. With a yellow color with greenish tones. They are partially covered by snowy white rhombohedral curved dolomite crystals. From a classic Spanish mine.


Size: 7.0 x 5.5 x 3.5 cm.

Price: 30 €Buy
 

RM2071   Azurite

El Coriellu mine, S. Cosme de Llerandi, Parres, Asturias, Spain

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)


Price: 60 €Buy
 

RM1523   Arsenopyrite and quartz

Carlés mine, Carlés, Salas, Asturias, Spain

Very brilliant specimen of arsenopyrite with quartz from this classic Asturian locality. It presents a matrix with quartz and pyrite, and in the cavities several good sized quartz crystals accompanied by small but brilliant arsenopyrite crystals. Spanish classic.


Size: 8.0 x 6.4 x 4.8 cm.

Price: 50 €Buy
 

RM1543   Fluorite and quartz

La Viesca mine, La Collada area, Huergo, Siero, Asturias, Spain

Group of fluorite crystals, with cubic forms truncated in the edges by the dodecahedron. Brilliant to dull, transparent to translucent, with color zonation between colorless to violet depending on the type of incident light. They are disposed on a matrix with quartz crystals.


Size: 9.7 x 8.5 x 4.0 cm.
Main crystal: 14 x 13 mm.

Price: 45 €Buy
 

RM1952   Graphite

Tres Hermanos mine, Pilotuerto, Tineo, Asturias, Spain

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

 

RM1951   Graphite

Tres Hermanos mine, Pilotuerto, Tineo, Asturias, Spain

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.

 

RM1949   Graphite

Tres Hermanos mine, Pilotuerto, Tineo, Asturias, Spain

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.

 

RM1966   Marcassite

Reocín mine, Reocín, Cantabria, Spain

Marcassite specimens from Reocín mine are a classic of the Spanish mineralogy. This piece, of very good size (16 cm/ 6.3 in), is a worthy representative of this species. It presents numerous well-defined crystals, most of them showing the "cock's comb" twinned habit. The brightness is very remarkable. The specimen is more than 20 years old and does not present any alteration, favored by the carbonate matrix. A definitive piece for fine displays.


Size: 16 x 10 x 7.5 cm.
Main crystal: 19 mm.
Found in ±1990's

Classic locality
Price: 390 €Buy
 

RM2007   Sphalerite

Las Manforas Mine (Áliva), Camaleño, Cantabria, Spain

Aggregate of sphalerite crystals, with complex faces and intense color when the light passes through it. Back side is exfoliated. From this classic locality.


Size: 5 x 4 x 2.8 cm.

Price: 55 €Buy
 

RM2024   Sphalerite

Las Manforas Mine (Áliva), Camaleño, Cantabria, Spain

Aggregate of sphalerite crystals, with complex faces and intense color when the light passes through it. Back side is recrystalized. From this classic Spanish locality.


Size: 5.5 x 3.8 x 3.5 cm.

 

RM2013   Anatase with quartz

Moro Quarry, Oteruelo de la Valduerna, Santiago de Millas, León, Castilla y León, Spain

Druse of small quartz crystals, some doubly terminated, partially covered by white kaolinite. Peppered by several anatase crystals, with dipyramidal faces, truncated by basal pinacoid. Very sharp, translucent and with a toasted honey tone. Very aesthetic and rare in the market.
It is interesting to say that recent analysis of the reddish ashlars of the Torre Nueva (New Tower) of the Astorga cathedral indicated that these building materials were extracted from this Cantera del Moro during XVIIth and XVIIIth centuries.


Size: 6 × 4.5 × 3.7 cm
Main crystal: 2 mm

 

RM2023   Anatase with quartz

Moro Quarry, Oteruelo de la Valduerna, Santiago de Millas, León, Castilla y León, Spain

Druse of small quartz crystals, some doubly terminated, partially covered by white kaolinite. Peppered by several anatase crystals, with dipyramidal faces, truncated by basal pinacoid. Very sharp, translucent and with a toasted honey tone. Very aesthetic and rare in the market.
It is interesting to say that recent analysis of the reddish ashlars of the Torre Nueva (New Tower) of the Astorga cathedral indicated that these building materials were extracted from this Cantera del Moro during XVIIth and XVIIIth centuries.


Size: 7 x 5.2 x 4.2 cm.
Main crystal: 2 mm.

Price: 30 €Buy
This mineral is in the cart of another user.
 

RM2027   Anatase with quartz

Moro Quarry, Oteruelo de la Valduerna, Santiago de Millas, León, Castilla y León, Spain

Druse of small quartz crystals, some doubly terminated, partially covered by white kaolinite. Peppered by several anatase crystals, with dipyramidal faces, truncated by basal pinacoid. Very sharp, translucent and with a toasted honey tone. Very aesthetic and rare in the market.
It is interesting to say that recent analysis of the reddish ashlars of the Torre Nueva (New Tower) of the Astorga cathedral indicated that these building materials were extracted from this Cantera del Moro during XVIIth and XVIIIth centuries.


Size: 10 x 9 x 4 cm.
Main crystal: 1.5 mm.

Price: 45 €Buy
This mineral is in the cart of another user.
 

RM2028   Anatase with quartz

Moro Quarry, Oteruelo de la Valduerna, Santiago de Millas, León, Castilla y León, Spain

Druse of small quartz crystals, some doubly terminated, partially covered by white kaolinite. Peppered by several anatase crystals, with dipyramidal faces, truncated by basal pinacoid. Very sharp, translucent and with a toasted honey tone. Very aesthetic and rare in the market.
It is interesting to say that recent analysis of the reddish ashlars of the Torre Nueva (New Tower) of the Astorga cathedral indicated that these building materials were extracted from this Cantera del Moro during XVIIth and XVIIIth centuries.


Size: 9 x 4 x 3.5 cm.
Main crystal: 2 mm.

 

RM2029   Anatase with quartz

Moro Quarry, Oteruelo de la Valduerna, Santiago de Millas, León, Castilla y León, Spain

Druse of small quartz crystals, some doubly terminated, partially covered by white kaolinite. Peppered by several anatase crystals, with dipyramidal faces, truncated by basal pinacoid. Very sharp, translucent and with a toasted honey tone. Very aesthetic and rare in the market.
It is interesting to say that recent analysis of the reddish ashlars of the Torre Nueva (New Tower) of the Astorga cathedral indicated that these building materials were extracted from this Cantera del Moro during XVIIth and XVIIIth centuries.


Size: 6 x 4.5 x 3.8 cm.
Main crystal: 2.5 mm.

Price: 40 €Buy
This mineral is in the cart of another user.
 

RM1754   Native Gold (nugget)

Salvatierra de Tormes, Salamanca, Castilla y León, Spain

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thin, good size and brilliant. Weight: 0.20 g.


Size: 1.0 x 0.6 x 0.1 cm.
Found in 2018.



 

RM1753   Native Gold (nugget)

Salvatierra de Tormes, Salamanca, Castilla y León, Spain

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thick, good size and brilliant. Weight: 0.97g.


Size: 1.0 x 0.8 x 0.3 cm.
Found in 2018.



 

RM1752   Native Gold (nugget)

Salvatierra de Tormes, Salamanca, Castilla y León, Spain

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thin, good size and brilliant. Weight: 0.68g.


Size: 1.2 x 0.9 x 0.2 cm.
Found in 2018.



 

RM1751   Native Gold (nugget)

Salvatierra de Tormes, Salamanca, Castilla y León, Spain

These gold nuggets were collected from the alluvial deposits of the quaternary paleoterraces of the Tormes river, pass through the locality of Salvatierra de Tormes. The analysis carried out have shown the presence of silver. Some specimens contain fragments of quartz. Thin, good size and brilliant. Weight: 1.34 g.


Size: 1.6 x 1.5 x 0.1 cm.
Found in 2018.



 

RM1783   Variscite

Palazuelo de las Cuevas, Zamora, Castilla y León, Spain

Specimen formed by a large group of aggregated nodules of variscite with concentric growths and apple green color. They are enclosed in a matrix with limonite. We can see the concentric structures in the natural fracture. Since its discovery in 1970, the Palazuelo de las Cuevas deposit became the "source" of variscite for the NW of the Iberian peninsula.


Size: 5.5 x 5.5 x 5.3 cm.
Found in ±1980's

Price: 35 €Buy
 

RM1777   Variscite

Palazuelo de las Cuevas, Zamora, Castilla y León, Spain

Specimen formed by a large group of aggregated nodules of variscite with concentric growths and apple green color. They are enclosed in a matrix with limonite. We can see the concentric structures in the natural fracture. Since its discovery in 1970, the Palazuelo de las Cuevas deposit became the "source" of variscite for the NW of the Iberian peninsula.


Size: 6.2 x 4.8 x 3.5 cm.
Found in ±1980's

Price: 45 €Buy
 

RM1776   Variscite

Palazuelo de las Cuevas, Zamora, Castilla y León, Spain

Specimen formed by a large group of aggregated nodules of variscite with concentric growths and apple green color. They are enclosed in a matrix with limonite. We can see the concentric structures in the natural fracture. Since its discovery in 1970, the Palazuelo de las Cuevas deposit became the "source" of variscite for the NW of the Iberian peninsula.

 


Size: 5.3 x 4.2 x 1.8 cm.
Found in ±1980's

 
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