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RM2964   Conichalcite, Azurite and chenevixite

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
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RM2963   Tinticite and calcioferrite

Very interesting combo formed by a tinticite nodule with some calcioferrite small aggregate. Calcioferrite is showing olive green globular aggregates, with radiated crystals, included in tinticite matrix. These specimens have been analyzed by SEM-EDS and XRD and we will send all details to the buyer. From this classic Catalan mine.

Size: 3.9 x 3.4 x 3.2 cm.
Found in 2019.
Analyzed specimen with report
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RM2962   Tinticite and calcioferrite

Very interesting combo formed by a tinticite nodule with some calcioferrite small aggregate. Calcioferrite is showing olive green globular aggregates, with radiated crystals, included in tinticite matrix. These specimens have been analyzed by SEM-EDS and XRD and we will send all details to the buyer. From this classic Catalan mine.

Size: 3.5 x 3 x 2.6 cm.
Found in 2019.
Analyzed specimen with report
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RM2957   Cinnabar and quartz

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
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RM2955   Quartz and fluorite
SiO₂
  -  4. Oxides and hydroxides

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.
45 €
RM2951   Fluorite

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
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RM2943   Quartz, amethyst var., and fluorite
SiO₂
  -  4. Oxides and hydroxides

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
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RM2942   Baryte
Ba(SO4)

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
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RM2938   Cronstedtite and smithsonite
(Fe2+,Fe3+)3(Si,Fe3+)2O5(OH)4

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)
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RM2936   Wood Opal
SiO₂·nH₂O
  -  0.

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).
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RM2933   Djurleite

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.
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RM2925   Bavenite, quartz, Clinochlore, Muscovite
Ca4Be2+xAl2-xSi9O26-x(OH)2+x (x = 0 to 1)

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.
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RM2924   Bavenite, Clinochlore, Muscovite
Ca4Be2+xAl2-xSi9O26-x(OH)2+x (x = 0 to 1)

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.
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RM2923   Bavenite, Clinochlore, Muscovite
Ca4Be2+xAl2-xSi9O26-x(OH)2+x (x = 0 to 1)

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.
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RM2918   Willemite

The Sant Fost willemite appears in small crystals with a pseudohexagonal prismatic habit (twinned), with striated faces. All of them are sub-millimetric in size and form druses of crystals with a resinous or adamantine luster, with colors ranging from dark brown to honey-yellow, or they may appear colorless and transparent. In Sant Fost the willemite appears associated to a sphalerite vein together with silicates (quartz and clays), calcite, fluorite, and baryte. Willemite is fluorescent under SW-UV light. Very unusual locality for the species.

Size: 3.8 x 1.7 x 0.9 cm.
Found in 2021.
Con análisis / With analytical report
Fluorescent under short wave UV
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RM2917   Surite with cerussite and fluorite

This is one of the few samples obtained in our last studies in this quarry. We saw a mica-like platy crystals, with a pearly luster and hexagonal form. The results of the different analytical techniques indicated that it was surite (SEM-EDS, EPMA, XRD, Raman). It is accompanied by cerussite, fluorite (purple), baryte and galena.
Surite is a very rare species based on a cerussite-like layer intercalated with a 2:1 layer of smectite. Can Rovira is the second locality in Europe and one of the few localities worldwide.

Size: 3.9 x 3.7 x 2.5 cm.
Found in ±2020.
Analyzed specimen with report
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RM2915   Fehrite and devilline
MgCu₄(SO₄)₂(OH)₆ · 6H₂O
  -  7. Sulfates, chromates, molybdates and wolframates

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: 2.9 x 2.1 x 0.8 cm.
Found in ±2019.
Analyzed specimen with report
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RM2914   Fehrite
MgCu₄(SO₄)₂(OH)₆ · 6H₂O
  -  7. Sulfates, chromates, molybdates and wolframates

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: 1.4 x 1.2 x 0.8 cm.
Found in ±2019.
Analyzed specimen with report
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RM2913   Pyrrhotite and magnetite

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
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RM2911   Goethite pseudomorphic of Pyrite

A specimen from this classic locality in Malaga where groups of pyrite crystals have been totally replaced by goethite (limonite). A Spanish reference.

Size: 8.8 x 5 x 2.8 cm.
Main crystal: 2.3 cm.
Found in ±1991.
Col. A. Arguijo (L'Hospitalet de Llobregat, Barcelona).
Classic locality
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RM2907   Scheelite, Uralite (amphibole Supergroup) and Epidote

Excellent specimen, with a good size, of granatite with vugs filled by epidote crystals, on which olive green fibrous aggregates of uralite stand out. The most remarkable are several well-formed crystals of scheelite, a species difficult to find locally, highly fluorescent under short-wave UV. It belongs from the Manchion collection and it was acquired from Joan Viñals in 1990.

Size: 6.9 x 6.8 x 4.8 cm.
Main crystal: 3.2 mm. sch.
Found in ±1990.
Col. Manchion (Barcelona).
Fluorescent under short wave UV
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RM2904   Fluorite and calcite

Group of cubic fluorite crystals, brilliant, transparent and yellow in color with zoning. Fluorescent under LW-UV light, with an interesting zoning. Dotted with small pyrite crystals and rhombohedral calcite. From this classic Asturian mine.

Size: 6.5 x 4.4 x 3.5 cm.
Main crystal: 1 cm.
Found in ±1991.
Col. Manchion (Barcelona).
Fluorescent under long wave UV
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RM2899   Celestine
Sr(SO4)
  -  7. Sulfates, chromates, molybdates and wolframates

These celestite specimens are a classic of Catalan mineralogy. They were found decades ago in fissures in the carbonate marls of Els Esbornacs area (Catalan word meaning fissures produced by landslides), in the Plana de Vic. They occur as orthorhombic prismatic crystals, transparent to translucent, bright and with a very characteristic greyish-blue color.

Size: 6.4 x 5 x 2.8 cm.
Main crystal: 5 mm.
Found in ±1980.
Classic locality
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RM2898   Celestine
Sr(SO4)
  -  7. Sulfates, chromates, molybdates and wolframates

These celestite specimens are a classic of Catalan mineralogy. They were found decades ago in fissures in the carbonate marls of Els Esbornacs area (Catalan word meaning fissures produced by landslides), in the Plana de Vic. They occur as orthorhombic prismatic crystals, transparent to translucent, bright and with a very characteristic greyish-blue color.

Size: 8 x 3.5 x 3.4 cm.
Main crystal: 6 mm.
Found in ±1980.
Classic locality
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RM2897   Celestine
Sr(SO4)
  -  7. Sulfates, chromates, molybdates and wolframates

These celestite specimens are a classic of Catalan mineralogy. They were found decades ago in fissures in the carbonate marls of Els Esbornacs area (Catalan word meaning fissures produced by landslides), in the Plana de Vic. They occur as orthorhombic prismatic crystals, transparent to translucent, bright and with a very characteristic greyish-blue color.

Size: 9 x 6.2 x 4.6 cm.
Main crystal: 5 mm.
Found in ±1980.
Classic locality
Sold