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RM2807   Hyaline quartz

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

This quartz specimen shows an aesthetic group with an excellent transparence and are very well defined faces and edges. It is not common to find with this configuration and less from this Colombian mine.


Size: 4.7 x 4.2 x 2 cm.
Main crystal: 5.3 cm.
Found in 2018.

 

RM2806   Hyaline quartz

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

This group of hyaline quartz crystals belongs from the Cabiche mine, very sharp, with exceptional transparency and luster. They show parallel and at the same time crossed growths. Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century.


Size: 6.6 x 4.7 x 3.1 cm.
Main crystal: 6 cm.
Found in 2018.

Price: 95 €Buy
 

RM2805   Quartz with Halloysite inclusions, "mango quartz"

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.


Size: 5 x 4 x 2.6 cm.
Main crystal: 4.2 cm.
Found in 2018.

Price: 60 €Reserved

 

RM2803   Quartz with Halloysite inclusions, "mango quartz"

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.


Size: 7.7 x 5.5 x 4.7 cm.
Main crystal: 3.8 cm.
Found in 2018.

Price: 95 €Buy
 

RM2802   Quartz with Halloysite inclusions, "mango quartz"

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.


Size: 7 x 6 x 5 cm.
Main crystal: 6.6 cm.
Found in 2018.

Price: 130 €Buy
 

RM2801   Quartz with Halloysite inclusions, "mango quartz"

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.


Size: 7.4 x 7.4 x 3.9 cm.
Main crystal: 6.4 cm.
Found in 2018.

Price: 140 €Buy
 

RM2804   Quartz with Halloysite inclusions, "mango quartz"

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.


Size: 8.2 x 7.7 x 4.5 cm.
Main crystal: 5.5 cm.
Found in 2018.

 

RM2713   Quartz with Halloysite inclusions, "mango quartz"

Cabiche mine, Cabiche, Quípama, Boyacá, Colombia

Quartz specimens from this Colombian mine, located in the Boyacá emerald mining area, have been well known since the end of the last century. By 2017, new galleries were opened those located different geodes. These crystals, called "mango quartz" or "crown quartz" were found in them, with inclusions that, after being recently analyzed, were determined as halloysite. The inclusions show filamentous structures and the tips of the crystals turn to orange tones. On our website we have already sold some samples with these inclusions on sale, without the orange coloration. Really aesthetic and on a matrix with goethitized dolomite-siderite.


Size: 8.9 x 7.6 x 6.5 cm.
Main crystal: 4.5 cm.
Found in 2018.

Price: 255 €Buy
 

RM2707   Elbaite partially peudom. by lepidolite

Coronel Murta, Minas Gerais, Brazil

Very interesting specimen of elbaite that has been partially transformed into lepidolite. A Brazilian curiosity. It comes from the Joan Astor collection (Barcelona), with a handwritten and typewritten label.


Size: 5 x 2.9 x 2.6 cm.
Found in ± 1975.

Col. Joan Astor (Barcelona).


Price: 55 €Buy
 

RM2700   Elbaite and quartz

Brazil

Group of elbaite crystals, green color, brilliant and very transparent. Embeded in a quartz matrix with muscovite. It belongs to the Joan Astor collection (Barcelona), with a handwritten label and typewritten box.


Size: 5.7 x 4.8 x 3 cm.
Main crystal: 3.4 cm.
Found in ± 1973.

Col. Joan Astor (Barcelona).


 

RM2692   Quartz, variety amethyst

Rio Grande do Sul, Brazil

Stalactitic aggregate, pineapple shape, of amethyst quartz crystals. Brilliant and with a more intense "amethyst" color at the tips of the crystals. An aesthetic piece, common, but aesthetic... It belongs to the Joan Astor collection (Barcelona), with a handwritten label and typewritten box.


Size: 5.5 x 5.4 x 4.8 cm.
Main crystal: 1.7 cm.
Found in ± 1975.

Col. Joan Astor (Barcelona).


 

RM2602   Römerite with coquimbite, krausite...

Javier Ortega Mine, Huachuas, Lucanas, Ayacucho, Peru

In 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: 7.2 x 6 x 5.5 cm.
Found in 03/2010.

Price: 65 €Buy
 

RM2601   Römerite with coquimbite, krausite...

Javier Ortega Mine, Huachuas, Lucanas, Ayacucho, Peru

In 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.

 

RM2588   Hyaline quartz with "phantom"

Gouveia, Minas Gerais, Brazil

A good size hyaline quartz crystal that shows an interior "ghost" that follows the geometry of the main one. Greenish in tone, probably due to a member of the mica group, fuchsite. These specimens are rare to see today.


Size: 5.7 x 2.2 x 1.6 cm.
Found in ±1985.

Col. A. Trigo, Mataró.


 

RM2587   Elbaite

Conselheiro Pena, Minas Gerais, Brazil

A very aesthetic miniature, but with an exceptional color variation. Between red, blue and green. A delicatessen from Brazil.


Size: 2.1 x 0.7 x 0.6 cm.

Col. A. Trigo, Mataró.
 

RM2586   Elbaite

Conselheiro Pena, Minas Gerais, Brazil

A very aesthetic miniature, but with an exceptional color variation. Between red, blue and green. A delicatessen from Brazil.


Size: 1.4 x 1 x 0.7 cm.

Col. A. Trigo, Mataró.
Price: 110 €Buy
 

RM2527   Twinned Rutile

Diamantina, Minas Gerais, Brazil

Group of rutile crystals with a highly visible cyclic twin. A brilliant piece with years... From the Joan Astor collection.


Size: 2.7 x 2.3 x 1.9 cm.
Found in ca. 1980.

Col. Joan Astor (Barcelona).


 

RM2491   Epidote

Rosario Mabel claim, Pampa Blanca, Castrovirreyna, Huancavelica, Peru

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: 3.7 x 2.1 x 1.8 cm.
Found in 2019.

 

RM2492   Epidote

Rosario Mabel claim, Pampa Blanca, Castrovirreyna, Huancavelica, Peru

Good 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.

 

RM2410   Hyaline quartz

Coronel Murta, Minas Gerais, Brazil

Group of very elongated quartz crystals, with developed prisms and well-defined rhombohedral terminal faces. Very transparent. Some faces of the prism show growth oriented cavities.


Size: 6.9 x 4.6 x 3.5 cm.
Main crystal: 6.9 x 1 cm.

Col. J. Astor (Barcelona).
 

RM2408   Rhodochrosite, tetrahedrite, pyrite and quartz

Casapalca Mine, Casapalca, Huarochiri, Lima, Peru

On 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).


 

RM2443   Bahianite

Pico das Almas river, Paramirim das Crioulas, Érico Cardoso, Bahia, Brazil

These alluvial peble specimens of bahianite are a remarkable rarity due to the composition. It is the only known pure aluminum antimonate. Structurally related to simpsonite (Ta instead of Sb). It is normally found as rolled pellets in the Pico das Almas river, in Brazil. It comes from this type locality for the species.


Size: 8 x 6 x 5 mm.

Type Locality
Price: 25 €Reserved

 

RM2442   Ammineite with atacmite and halite

Pabellón de Pica, Chanabaya, Iquique, Tarapacá, Chile

Sky blue ammeneite occurring as minute crystals on and in halite with green atacamite. From the type locality. This is a fairly rare copper halide and is the first mineral known to contain ammonia radical cation (·NH3) groups.


Size: 3.4 x 2.7 x 2.6 cm.

 

RM2404   Molybdenite

Inca de Oro, Chañaral/Copiapó, Atacama, Chile

Molybdenite specimens from Inca del Oro are very difficult to find in the market and more with defined crystals. This sample shows a very well defined, bright and well-disposed hexagonal crystal of molybdenite on the matrix. A unique opportunity to include to your collection a very representative and fine specimen for the species. It belongs from the former J. Astor collection (Barcelona). The locality of Inca del Oro is located between the Chilean provinces of Copiapó and Chañaral.


Size: 7.3 x 4.8 x 3.5 cm.
Main crystal: 1.5 cm.
Found in ca. 1980's.

Col. Joan Astor (Barcelona).
 

RM2478   Rhodochrosite and quartz

Huaron mines, Huayllay, Pasco, Peru

Groups 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).


 
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