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RM2950   Crossite, riebeckite-glaucophane

Hallberg, Rigaus, Abtenau, Hallein, Salzburg, Austria

In this sample we can observe a large group of prismatic crystals, acicular, bright, with a dark violet to lavender color. The original description of this piece referred to a mineral from the amphibole supergroup called "crossite". This species is currently discredited and it is an intermediate between riebeckite and glaucophane groups. The specimens from this Austrian locality are very characteristic.


Size: 5 x 3.5 x 2.3 cm.

Price: 45 €Reserved

 

RM2949   Epidote

Argentière Glacier, Massif du Mont Blanc, Chamonix, Haute-Savoie, Rhône-Alpes, France

Epidote specimens from this area of Mont-Blanc are not at all common. This specimen was purchased by Joan Astor in Chamonix. It is an idiomorphic crystal, of a good size, with well-defined faces, except for one in the upper part that is fractured. We can also observe growth fissures. This specimen has its history since it was acquired from Francesc Garcia, one of the referents of Catalan mountaineering.


Size: 4 x 2.8 x 1.3 cm.
Found in ±1975.

Col. Joan Astor (Barcelona).
Classic locality


Price: 120 €Reserved

 

RM2948   Celestine and sulphur

Machów mine, Tarnobrzeg City Co., Subcarpathian Voivodeship, Poland

In this specimen we can observe a group of celestine crystals with a highly developed prism and small but well defined terminal faces. They are transparent, which allows us to observe a marked color zoning with honeyed tones in the lower middle part and colorless in the upper part. They are disposed on a matrix with sulphur. This specimen belongs from the former Joan Astor collection and we will send the handwritten label to the buyer.

Abstract from Gradowski et al. (1992): "Sulphur deposits being surface mined in the Tarnobrzeg area of Poland formed post-depositionally in the vuggy limestone layer above gypsum and anhydrite beds. Sulphur was deposited mostly as powder but also as coarsely crystalline masses and as free-growing crystals. Other materials present in the sulphur-bearing horizon include calcite, gypsum, quartz, aluminum oxide, celestine, and barite. Mineral specimens of these minerals collected at the mine are described."
Gradowski, J. and Kubiak, W.W. (1992) The Machow Mine, Tarnobrzeg, Poland. The Mineralogical Record: 23(1): 29-32.


Size: 4 x 3.9 x 3.2 cm.
Main crystal: 2.3 cm.
Found in ±1990.

Col. Joan Astor (Barcelona).


Price: 65 €Reserved

 

RM2941   Elbaite and clevelandite

Lavra da Pederneira, São José da Safira, Doce valley, Minas Gerais, Brazil

Prismatic crystal of elbaite, with an intense green color, which shows a lighter green color on the upper flat face of the pinacoid when light passes through it. It is accompanied by clevelandite crystals. It comes from the Trigo collection.


Size: 2.3 x 2.2 x 1.9 cm.
Main crystal: 2 x 1.5 cm.

Col. Trigo (Mataró, Catalunya)
Price: 45 €Reserved
 

RM2940   Elbaite

Cruzeiro mine, São José da Safira, Minas Gerais, Brazil

Elbaite specimen of very good size and thickness, showing us the prisms with vertical striations and well-defined terminal faces. Highlights the brightness and a more intense green color at the top and lighter at the base. A gem from Minas Gerais. It belongs from the Trigo collection.


Size: 4.9 x 2.3 x 2.2 cm.
Found in ±1985.

Col. Trigo (Mataró, Catalunya)
Price: 140 €Buy
 

RM2939   Rosasite and calcite

Omega Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima Co., United States of America

Rich group of velvety globular aggregates of rosasite formed by very fine needles, with a color between blue to light blue. They are accompanied by partially corroded crystals of transparent calcite and contrast in a very aesthetic way in a cavity of the goethite matrix. This specimen belongs from the former Joan Astor collection whose handwritten label we will send to the buyer.


Size: 4.4 x 3.5 x 3.3 cm.
Found in ±1992.

Col. Joan Astor (Barcelona).


Price: 55 €Reserved

 

RM2938   Cronstedtite and smithsonite

Brunita open pit, Sierra Minera de Cartagena-La Unión, La Peraleja, La Unión, Murcia, Spain

The Corta Brunita (open pit), in Murcia, is a classic of Spanish mining and mineralogy. This sample shows various globular aggregates of cronstedtite, formed by small crystals with triangular terminal faces. They are disposed on a matrix with smithsonite.


Size: 9.4 x 5 x 3 cm.
Main crystal: 14 mm. glob. agr.
Found in ±2015.

Col. M. Marí - A. García (Castelló)
Price: 190 €Buy
 

RM2936   Wood Opal

Montjuïc Mt., Barcelona, Barcelona, Catalunya, Spain

Near the coast of the Catalan city of Barcelona is emplaced this historical and geologically very interesting promontory such as the Montjuïc mountain. The sample we propose is a xylopal (opal wood) in which we can observe structures of the original wood. These specimens are already as historic as the mountain from which they belong...


Size: 8.4 x 4.3 x 2.7 cm.
Found in ±1985.

Col. Joan Astor (Barcelona).
Price: 45 €Reserved

 

RM2935   Arsendescloizite, malachite and calcite

Ojuela mine, Mapimí, Municipio de Mapimí, Durango, México

The classic and Mexican Ojuela mine never ceases to amaze us. In this specimen we can enjoy a vug in the limonite matrix completely upholstered by aggregates of arsendescloizite crystals, with a slightly yellowish green color, on which numerous acicular aggregates of green malachite crystals have grown. On the label, they were described as conichalcite, but analysis indicates that it is this copper carbonate. Also accompanied and partially covered by calcite crystals, very transparent and bright, partially corroded naturally. A very aesthetic and unusual specimen for this mine.


Size: 8.8 x 6.8 x 6.4 cm.
Found in ±2020.

Classic locality


Price: 165 €Reserved

 

RM2932   Galena, spinel twin and sphalerite

Giudivrska mine, Plovdiv, Plovdiv Oblast, Bulgaria

Very good specimen of galena formed by a large group of crystals with complex shapes and a visible spinel twin. They are disposed on a small matrix.

 


Size: 5.6 x 5 x 4.3 cm.
Main crystal: 3.5 cm.

Price: 160 €Buy
 

RM2931   Harmotome and fluorapophyllite-(K)

Korsnäs Lead Mine, Korsnäs, Ostrobothnia, Finland

Specimen of harmotome from a nowadays inactive Finnish lead mine: Korsnäs. On a matrix covered by very brilliant and well defined fluorapophyllite-(K) crystals with a greenish yellow color, we can observe some groups of aesthetic harmotome crystals, well faceted and interpenetrated among them. They show a pearly luster. Nowadays, these specimens are difficult to get.


Size: 8.5 x 6.5 x 4 cm.
Main crystal: 9 mm.
Found in ±1977.

Col. Joan Astor (Barcelona).


Price: 80 €Reserved

 

RM2930   Harmotome and calcite

Bellsgrove Quarry, Strontian, Fort William and Ardnamurchan, Highland, Scotland, United Kingdom

This specimen is a fine sample of harmotome from the Bellsgrove quarry in Scotland, a locality that has produced excellent pieces of this zeolite. On a calcite matrix with honey to greenish tones, several richly faceted crystals of harmotome are disposed. Between transparent and translucent, and of a remarkable size for the species. Exploitation of a notable baryte vein (Strontian Main) destroyed the Middleshop mines and was renamed as Strontian Barytes Mine, now called as Bellsgrove Quarry. It is accompanied by the seller's label.

 


Size: 8 x 4.7 x 4.7 cm
Main crystal: 10 mm.

Ex. Erich Laskowski col.


Price: 100 €Reserved

 

RM2929   Magnetite

Huayriquiña mine, Cerro Huañaquino, Potosí, Bolivia

Specimens of magnetite from Cerro Huañaquino were well known decades ago, but today it is not easy to find them, and even less with the quality of this specimen that we propose. It is a druse of very bright octahedral crystals with an intense black colour that are disposed on the rocky matrix.


Size: 8.9 x 5 x 3.5 cm.
Main crystal: 7 mm.

Price: 65 €Buy
 

RM2928   Magnetite

Huayriquiña mine, Cerro Huañaquino, Potosí, Bolivia

Specimens of magnetite from Cerro Huañaquino were well known decades ago, but today it is not easy to find them, and even less with the quality of this specimen that we propose. It is a druse of very bright octahedral crystals with an intense black colour that are disposed on the rocky matrix.

 


Size: 7.8 x 6.8 x 2.8 cm.
Main crystal: 1.5 cm.

Price: 80 €Buy
 

RM2927   Agate, variety of Chalcedony

Las Plumas, Mártires, Chubut, Argentina

Very curious specimen of agate from this classic Argentine locality that shows us the characteristic botryoidal shapes that have been slightly polished to show us the beauty of this semiprecious stone. This specimen belongs from the Trigo collection (Mataró) and was acquired at the Mineralexpo Barcelona-Sants mineral show, in Barcelona, decades ago.


Size: 5.2 x 4.8 x 2.3 cm.
Found in ±2007.

Col. Trigo (Mataró, Catalunya)


Price: 45 €Buy
 

RM2926   Bavenite, quartz, Clinochlore, Muscovite

Venero 1 quarry, Cadalso de los Vidrios, Madrid, Spain

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.


Size: 9.8 x 9.5 x 4.4 cm.

Price: 90 €Reserved

 

RM2925   Bavenite, quartz, Clinochlore, Muscovite

Venero 1 quarry, Cadalso de los Vidrios, Madrid, Spain

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.


Size: 9.6 x 7 x 3.4 cm.
Main crystal: 6 mm.

Price: 80 €Reserved

 

RM2924   Bavenite, Clinochlore, Muscovite

Venero 1 quarry, Cadalso de los Vidrios, Madrid, Spain

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.


Size: 7.8 x 6.4 x 2.1 cm.

Price: 80 €Reserved

 

RM2923   Bavenite, Clinochlore, Muscovite

Venero 1 quarry, Cadalso de los Vidrios, Madrid, Spain

Bavenite specimens from Cadalso de los Vidrios are a classic of the Spanish mineralogy and it had been a long time since pieces of this aluminosilicate of beryllium and calcium had been seen. On a matrix with quartz, albite, and microcline, we can observe several aggregates of tabular, transparent, and very bright crystals forming aesthetic rosettes, accompanied by small crystals of pyrite and laumontite.


Size: 6.8 x 5.3 x 1.9 cm.

Price: 70 €Reserved

 

RM2922   Prehnite and actinolite

Ait Karmosse, Boulemane, Fès-Meknès, Morocco

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.


Size: 8.9 x 6.6 x 5.2 cm.
Found in 02/2022.

Price: 60 €Buy
 

RM2921   Prehnite

Ait Karmosse, Boulemane, Fès-Meknès, Morocco

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.

 


Size: 9.2 x 5.8 x 4.5 cm.
Found in 02/2022.

Price: 70 €Buy
 

RM2920   Prehnite and actinolite

Ait Karmosse, Boulemane, Fès-Meknès, Morocco

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.

 


Size: 8.5 x 5 x 4.7 cm.
Found in 02/2022.

Price: 60 €Buy
 

RM2919   Prehnite and actinolite

Ait Karmosse, Boulemane, Fès-Meknès, Morocco

These prehnite specimens are a novelty from the Mineralexpo Barcelona-Sants 2022 mineral show. They show rich groups formed by sheaf aggregates of crystals, very brilliant, translucent and with a very uniform green color. Sometimes they are accompanied by small acicular crystals of actinolite. They belong from a Moroccan locality near Boulemane.


Size: 7.3 x 5.5 x 4.7 cm.
Found in 02/2022.

Price: 65 €Buy
 

RM2913   Pyrrhotite and magnetite

Burguillos del Cerro, Badajoz, Extremadura, Spain

Although it is a massive specimen, we can see the pyrrhotite with bronze luster with inclusions of black magnetite. It is not a very common species for the locality. It belongs from the Astor collection. For Spanish locality collectors.


Size: 5 x 4.2 x 3 cm.
Found in ±1985.

Col. Joan Astor (Barcelona).
Classic locality


Price: 35 €Buy
 

RM2912   Aragonite

Minglanilla, Cuenca, Castilla-La Mancha, Spain

Very good sized specimen of cyclically twinned aragonite. It belongs from the Manchion collection, with the classic label.


Size: 6 x 5.2 x 5.2 cm.
Found in ±1991.

Col. Manchion (Barcelona).


Price: 35 €Buy
 
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