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RM2990   Alumohydrocalcite and siderite

Mas Dieu, Mercoirol, Laval-Pradel, Gard, Occitània, France

Globular and radial aggregates of alumohydrocalcite crystals, white to cream in color and with a silky luster. They contrast on the brown siderite. They come from this classic French mine, nowadays partially restored.


Size: 4.4 x 4.1 x 1.4 cm.



 

RM2937   Allargentum, safflorite and calcite

Wenzel Mine, Oberwolfach, Ortenaukreis, Freiburg, Baden-Württemberg, Germany

These German mines have produced some of the best specimens of silver and allargentum from European mines. A good-sized piece, we can see aggregates of this silver and antimony species showing rounded forms. Disposed very aerial on a calcite matrix. With good luster and bronze reflections. With safflorite. It belongs from a Spanish collection, and we will send the handwritten label to the buyer.

 


Size: 6.9 x 5.3 x 2.3 cm.

Col. M. Marí - A. García (Castelló)
Price: 195 €Buy
 

RM2934   Analcime

Monte Iscoba, Nulvi, Sassari, Sardegna, Italy

Druse of analcime crystals, very brilliant, transparent, and with very well-defined faces and edges. A specimen of fine quality for this Italian locality.

 


Size: 7 x 4.8 x 4.4 cm.
Main crystal: 4.5 mm.

Ex. Max Caldera
 

RM2992   Arsenopyrite and chalcopyrite

Julcani Mine, Julcani, Angaraes, Huancavelica, Perú

These specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy hundreds of arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with dull luster, but gold tone, also well-defined and twinned. Brilliance and quality. Good sized specimen.


Size: 11,5 x 5.7 x 4.4 cm.

 

RM2991   Arsenopyrite and chalcopyrite

Julcani Mine, Julcani, Angaraes, Huancavelica, Perú

These specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy hundreds of arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with luster and gold color, also well-defined and twinned. Brilliance and quality.


Size: 6.1 x 5.6 x 2.7 cm.

 

RM2942   Baryte

Osor mines, Osor, Girona, Catalunya, Spain

Baryte specimens from this classic Catalan mine are rare on the market. In this piece we can see a large group of interpenetrated crystals, highlighting some of them with clearly visible faces. They have a slightly yellowish color and are translucent. This specimen comes from the Joan Astor collection.


Size: 6.7 x 4.7 x 4.5 cm.
Main crystal: 2.6 cm.
Found in ±1975.

Col. Joan Astor (Barcelona).
Classic locality


 

RM2983   Baryte and limonite

Els Frares Quarry, Aiguafreda, Vallès Oriental, Catalunya, Spain

Baryte crystals from this quarry are a classic of Catalan mineralogy. They appear in the fissures of the slates, usually covered by iron oxydes. In this specimen we can see various groups of prismatic crystals, brilliant and transparent, rich in faces. Among them, a larger one stands out in which we can see the faces of orthorhombic prisms of various orders truncated by pinacoidal faces. Nowadays it is very difficult to find specimens in this quarry and even less with the quality we offer.


Size: 11.3 x 6.7 x 4 cm.
Main crystal: 14 x 7 mm.
Found in ±1987.

Classic locality
Price: 80 €Buy
 

RM2957   Cinnabar and quartz

El Entredicho Mine, Almadenejos, Almadén, Ciudad Real, Castilla-La Mancha, Spain

This is a representative specimen of fissural cinnabar, in which we can observe under magnification small flattened cinnabar crystals, with striated faces, on a druse of quartz crystals. The transparence makes it very brilliant under the light.


Size: 6.4 x 4.7 x 3.5 cm.

Classic locality
Price: 50 €Buy
 

RM2964   Conichalcite, Azurite and chenevixite

Hamapega Hill, Guadalcanal-Alanís, Sevilla, Andalucía, Spain

These specimens were extracted in Loma de Hamapega (hill), a short mountain range between the localities of Alanís and Guadalcanal. Various minerals were analyzed, among which we highlight conichalcite, green in color, azurite and some earthy aggregates that turned out to be chenevixite. We will send analyses to the buyer. A sample for local collectors.


Size: 7.3 x 5.7 x 4.6 cm.
Found in 2021.

Analyzed specimen with report


Price: 45 €Buy
 

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)
 

RM2980   Quartz, amethyst var., and fluorite

Sant Marçal (Matagalls) mines, Sant Marçal, Massís del Montseny, Viladrau, Girona, Catalunya, Spain

The Matagalls fluorite mines are located in the Montseny massif. They are well known for fluorite, but also for quartz crystals of the amethyst variety like ones shown in this specimen. Numerous amethyst crystals are disposed on a matrix upholstered by yellowish-green fluorite, partially covered by small very brilliant calcite crystals.


Size: 8.8 x 8.2 x 4 cm.
Found in ±1970.

Fluorescent under long wave UV
 

RM2943   Quartz, amethyst var., and fluorite

Sant Marçal (Matagalls) mines, Sant Marçal, Massís del Montseny, Viladrau, Girona, Catalunya, Spain

The Matagalls fluorite mines are located in the Montseny massif. They are well known for fluorite, but also for quartz crystals of the amethyst variety like ones shown in this specimen. Numerous amethyst crystals are disposed on a matrix upholstered by yellowish-green fluorite, partially covered by small very brilliant calcite crystals.


Size: 9.6 x 5.4 x 5 cm.
Found in ±1970.

Fluorescent under long wave UV
 

RM2955   Quartz and fluorite

Sant Marçal (Matagalls) mines, Sant Marçal, Massís del Montseny, Viladrau, Girona, Catalunya, Spain

In this specimen we can see a group of bluish fluorite crystals partially covered by a druse of minute but very bright quartz crystals.


Size: 5.3 x 6 x 3.8 cm.
Main crystal: 8 mm. fluorita
Found in ±1985.

Price: 45 €Buy
 

RM2982   Quartz with kaolinite

Serrabal mine, Vedra, A Coruña, Galícia, Spain

Floating druse of quartz crystals forming pineapple growths, with a good luster and a slightly yellowish hue. On the backside, also crystallized, we can see the typical kaolinite layer of this deposit. It is accompanied by a limonite that was probably pyrite.
These specimens were collected in this A Coruña quarry that exploits quartz, one of the main mines in the world due to the quality and quantity of its reserves. The mine was discovered in 1968 by three Galicians who gave their name (from their surnames SEñarís, RAma and BALboa) to the concession and who found it while exploring these mountains in the Pico Sacro area in search of "seixo" (from the Galician: hard white rock) of good quality.


Size: 11 x 7.8 x 5.9 cm.
Found in 2017.

 

RM2933   Djurleite

Las Cruces mine, Gerena, Sevilla, Andalucía, Spain

Las Cruces mine, northwest of Seville, is an example of mining in the Iberian Pyrite Belt. But it must be said that minerals those have been found there are not at all common in other deposits of this geological megastructure. Exceptional specimens of chalcocite and djurleite stand out from this mine. This specimen we offer is a magnificent specimen of the latter species, djurleite (an orthorhombic copper sulfide). We can observe aggregates formed by several idiomorphic crystals with octahedral shape and a metallic gray luster. They are disposed on a matrix formed by other copper and iron sulfides. As is usual in these specimens and has already been indicated in previous studies, these crystals may correspond to phases of djurleite/chalcocite. In this case we have carried out an X-ray diffraction that confirms it is djurleite. An exceptional piece, for "gray" mineral collectors, that nowadays is very difficult to get.


Size: 8.7 x 6.3 x 5 cm.
Found in ±2011.



 

RM2994   Twinned dolomite

Azkarate Quarry, Eugi, Esteribar, Nafarroa (Navarra), Spain

Group of twinned rhombohedral dolomite crystals with very well defined faces and edges. They show striated faces, transparence and brilliance. With gray inclusions arranged randomly, not uniform. A classic of Spanish mineralogy.


Size: 7.8 x 5.5 x 5 cm.
Main crystal: 3 x 2.5 cm. macla/twin



 

RM3008   Fehrite and devilline

Les Ferreres mine, Rocabruna, Camprodon, Girona, Catalunya, Spain

Fehrite is a recent new species found in Almeria (Spain). Some years ago (2012) we identified this species in the Les Ferreres mine (Camprodon) but unfortunatelly we didn't have enough sample to finish detrmination and structural studies. Recently we found some more samples and the characterization was carried out based on the results obtained from the application of various analytical techniques: SEM-EDS, Raman and X-ray diffraction. Les Ferreres mine is the second locality worldwide for the species. We will send all reports to the buyer.
In this Catalan mine, fehrite appears as elongated elongated tabular to fibrous crystals, with a delicate bluish-green tone, and fibrous terminations. Usually, it is accompanied by devilline (blue) and brochantite (green). It is the magnesium analogue of ktenasite.


Size: 2.3 x 1.1 x 1 cm.
Found in ±2019.

Analyzed specimen with report


Price: 70 €Buy
 

RM2951   Fluorite

Berta quarry, El Papiol - Sant Cugat del Vallès, Barcelona, Catalunya, Spain

Very good sized specimen of fluorite from this classic Catalan quarry. On the "old" matrix of orange granodiorite there are various groups of crystals, some of them isolated, with octahedral shapes. They have a semi-matte luster and a uniform green color. Very fluorescent under LW-UV light. Specimens of fluorite from this quarry are highly prized by collectors.


Size: 12 x 6.6 x 5.6 cm.
Main crystal: 1.1 cm.
Found in ±1999.

Fluorescent under long wave UV
Price: 100 €Buy
 

RM2981   Fluorite and quartz

Sant Marçal (Matagalls) mines, Sant Marçal, Massís del Montseny, Viladrau, Girona, Catalunya, Spain

Fluorite specimens from Sant Marçal mines usually appear as aggregates of cubic crystals, defined, sometimes sprinkled or partially covered by quartz crystals. Yellow to greenish tones are the usual ones. Specimens with violet to bluish colors (depending on the type of incident light) are much less frequent and highly appreciated by collectors. These specimens we offer were collected at the beginning of the 70s. Some small nick, very common in these specimens, without affecting the quality. In this specimen we can observe cubic crystals with this bluish to greenish tone, translucent and disposed on a characteristic ochy "pegmatite" matrix. They are partially covered and on with small but brilliant quartz crystals.


Size: 10 x 5.7 x 4.4 cm.
Main crystal: 9 mm. edge.
Found in ±1970.

Fluorescent under long wave UV
Price: 60 €Buy
 

RM2979   Fluorite and quartz

Sant Marçal (Matagalls) mines, Sant Marçal, Massís del Montseny, Viladrau, Girona, Catalunya, Spain

Fluorite specimens from Sant Marçal mines usually appear as aggregates of cubic crystals, defined, sometimes sprinkled or partially covered by quartz crystals. Yellow to greenish tones are the usual ones. Specimens with violet to bluish or green colors (depending on the type of incident light) are much less frequent and highly appreciated by collectors. These specimens we offer were collected at the beginning of the 70s. In this specimen we can observe cubic crystals with this bluish tone, translucent and disposed on a characteristic ochy "pegmatite" matrix. They are partially covered with small but brilliant quartz crystals.


Size: 6.7 x 6.5 x 3.6 cm.
Main crystal: 1.1 cm.
Found in ±1970.

Fluorescent under long wave UV
Price: 55 €Buy
 

RM2969   Fluorite and quartz

Sant Marçal (Matagalls) mines, Sant Marçal, Massís del Montseny, Viladrau, Girona, Catalunya, Spain

Fluorite specimens from Sant Marçal mines usually appear as aggregates of cubic crystals, defined, sometimes sprinkled or partially covered by quartz crystals. Yellow to greenish tones are the usual ones. Specimens with violet to bluish or green colors (depending on the type of incident light) are much less frequent and highly appreciated by collectors. These specimens we offer were collected at the beginning of the 70s. In this specimen we can observe cubic crystals with this bluish to greyish tone, translucent and disposed on a characteristic ochy "pegmatite" matrix. They are partially covered with small but brilliant quartz crystals.

The Sant Marçal mines (also known as Matagalls mines) are located in the Montseny massif, on the eastern slope of the Matagalls peak (1,700 m). Mining works were carried out at 1,250 to 1,350 m of altitude. The municipality corresponds to Viladrau. Mining in this type of deposits in this area and surrounding areas had been focused on the extraction of minerals of Pb, Zn, F and Ba. Together with the Osor and Tagamanent deposits, the Rigròs main vein from Sant Marçal mines is one of the most important in terms of fluorite extraction. Although there are other less thin mineralized veins in the area. These veins are embedded in granodiorite rock, which locally present metric dikes with a pegmatite texture. the granodiorites are usually altered to "sauló" (coarse-grained sand with micas, clays and quartz grains) and in some specimens it forms part of the matrix. The paragenesis of these veins: fluorite, baryte, galena, pyrite, chalcopyrite and quartz (often amethyst variety). They were mined until the mid-90s and have been partially restored. Currently this area belongs to the Montseny Natural Park, so the collection of specimens is totally prohibited.

 


Size: 5.5 x 3.5 x 3.2 cm.
Main crystal: 9 mm. edge.
Found in ±1970.

 

RM3000   Phosgenite, Anglesite and Galena

Monteponi, Iglesias, Carbonia-Iglesias, Sardegna, Italy

The Monteponi phosgenite specimens are a classic of European and worldwide mineralogy. This specimen shows us two differentiated zones. One with a group of phosgenite crystals in parallel growth accompanied by a well defined prismatic crystal. Translucent and with the classic honey gray tone. They are disposed on a galena matrix with numerous anglesite crystals. This specimen belongs with the label of the René Hubin collection (Belgium).


Size: 7.2 x 5.8 x 4.1 cm.
Main crystal: 1 cm.

Col. René Hubin (Neupré, Belgium).


 

RM2953   Gyrolite and Okenite

Malad Quarry, Malad, Mumbai, Maharashtra, India

Group of globular aggregates of gyrolite, with a very good size, white and translucent. They are accompanied in the vacuole with fine acicular crystals of okenite. The photos do not do the piece justice. Very aesthetic.


Size: 10.5 x 7.8 x 6.3 cm.

Price: 110 €Buy
 

RM2968   Hematite

Monte de Hierro Mines, Cerro del Hierro, San Nicolás del Puerto, Sevilla, Andalucía, Spain

This is a very good sized specimen of hematite from the group of mines called "Monte de Hierro" (Iron Hill), whose concessions were between the terms of San Nicolás del Puerto and Constantina, although most of the surface is found in the first municipality mentioned. This specimen belongs from the Trigo collection (Mataró) and according to the label it was extracted in 1989 by Julián García.


Size: 9.3 x 7.4 x 4 cm.
Found in ±1989.



 

RM2985   Hydroboracite

Bigadiç Mine, Bigadiç, Balikesir, Turkey

Excellent specimen of hydroboracite, with a very good size, formed by numerous radial aggregates of acicular crystals. Very good brilliance, transparence and with color zoning, between colorless to slightly honeyed. This specimen has a former owner's label fixed to the back side. A display museum specimen.


Size: 8.8 x 6.7 x 4.3 cm.
Main crystal: 2.8 cm.



 
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