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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).


 

RM3002   Natrolite

Rio Fromm, Alpe di Siusi, Castelrotto, Bolzano, Trentino-Alto Adige, Italy

Rich group of radiated natrolite crystals, transparent to translucent, very bright and disposed on a vacuole of basaltic rock. It is not easy to find specimens with this quality and from this Italian locality. Specimen from the collection of Rolando Gallina.


Size: 8.4 x 7.4 x 7 cm.

Col. Rolando Gallina (Itàlia).
 

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



 

RM2993   Thomsonite-Ca and Phillipsite

Arensberg, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany

Aesthetic globular aggregate of thomsonite-Ca, with a slightly bony tone and disposed in a basalt vacuole lined with small phillipsite crystals. Arensberg phillipsite crystals contain both potassium and calcium, and in some crystals calcium is dominant. A very good specimen for this German locality, little represented in collections.


Size: 8.8 x 5.4 x 4.9 cm.
Main crystal: 13 mm. glob.
Found in ±1974.

Classic locality


 

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.

 

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.



 

RM2989   Zunyite

Qualat-e-Balat salt dome, Bandar Abbas, Hormozgan, Iran

Very sharp single zunyite crystal with good luster, coloured by red hematite inclusions and with some small brilliant foliaceous hematite partially included in faces. Very clean tetrahedron form, truncated by cubic faces. Tetrahedron edge is 9.7 mm. A good sized and perfect crystallographic specimen of this unusual species, a rare sorosilicate of aluminum and chlorine, with fluorine. Analized by X-ray difraction and X-ray fluorescence.


Size: 9.7 x 9.5 x 9.2 mm.
Main crystal: 9.7 mm arista/edge.
Found in 2018.

Analyzed specimen with report


 

RM2987   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: 2.1 x 1.5 x 1.2 cm.
Found in ±2019.

Analyzed specimen with report


 

RM2986   Anhydrite, pyrite and dolomite

Miniera di Campiano, Montieri, Grosseto, Toscana, Italy

Specimen of anhydrite formed by numerous prismatic to tabular crystals, well defined and interpenetrated. On the back we can see the matrix formed by dolomite and brilliant pyrite crystals. Specimens from this Italian mine, located north of Boccheggiano, were collected at the end of the 20th century. The mine worked from the early 1980s, currently the mine is closed.


Size: 11 x 5.3 x 5 cm.
Main crystal: 1.3 cm.

Price: 110 €Buy
 

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.



 

RM2984   Mangan-diaspore

Glosam Mine, Western Belt, Northern Cape, South Africa

Rare and good sized mangan-diaspore (diaspore with manganese) specimen showing brilliant, transparent to translucent, burgundy red tabular crystals disposed in an arc on matrix. We can also observe small geodes full of crystals. The Glosam Mine specimens are the only ones in the Kalahari area in which the manganese diaspore shows this intense color and brilliance. An exceptional specimen for a little-seen species.


Size: 10.2 x 8 x 6.2 cm.
Main crystal: 12 mm.



 

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
 

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.

 

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
 

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
 

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
 

RM2978   Celestine

Langre, Ribamontán al Mar, Cantabria, Spain

These celestite specimens come from a classic locality on the Cantabrian coast such as Langre, together with Laredo. These are idiomorphic crystals formed within a nodule. Very brilliant, defined and transparent, with a delicate bluish color.


Size: 5.2 x 4.2 x 3.8 cm.
Main crystal: 1.3 cm.

Price: 75 €Buy
 

RM2977   Celestine

Langre, Ribamontán al Mar, Cantabria, Spain

These celestite specimens come from a classic locality on the Cantabrian coast such as Langre, together with Laredo. These are idiomorphic crystals formed within a nodule. Brilliant, defined and transparent, with a delicate bluish color.


Size: 4.9 x 3.8 x 3.1 cm.
Main crystal: 9 mm.

Price: 55 €Buy
 

RM2976   Magnesite

Impensada Mine (Magnesitas de Rubián), Pacios, O Incio, Lugo, Galicia, Spain

The Rubián Magnesite mines are a classic of Galician mineralogy. Currently these mines are active exploiting one of the largest deposits of magnesite in Spain. This specimen, which dates from the late 1970s, shows us a rich aggregate of lenticular crystals of this magnesium carbonate, brilliant, translucent, and with a very aesthetic orange color. It belongs from the Joan Astor collection, with his handwritten and another typed labels.


Size: 5 x 4.8 x 2.9 cm.
Found in ±1977.

Classic locality


 

RM2975   Fluorite, quartz and calcite

Qinglong Mine, Qinglong County, Qianxinan, Guizhou, China

These fluorite crystals have a cubic appearance with growths in tiles on the surfaces of the faces. In this specimen we observe a more intense violet to purple color on the edges and on the outside of the crystals, while inner core has a soft green color. They are disposed on a matrix with quartz crystals. Under shortwave ultraviolet light they fluoresce bluish.


Size: 6.8 x 5.5 x 3 cm.
Main crystal: 2.1 cm. edge/arista.

Fluorescent under long wave UV
Price: 70 €Buy
 

RM2974   Fluorite and calcite

Qinglong Mine, Qinglong County, Qianxinan, Guizhou, China

Group of slightly beveled cubic fluorite crystals with polysynthetic growths on the faces and edges. They have a more intense purple color on the edges, very characteristic of these specimens from the Qinglong mine in China. Between translucent to transparent. They are disposed on a matrix with calcite and quartz.


Size: 7.8 x 7 x 3.5 cm.
Main crystal: 10 mm edge/arista.

 

RM2973   Fluorite and quartz

Qinglong Mine, Qinglong County, Qianxinan, Guizhou, China

Group of fluorite crystals with a cubic shape, but with the edges and vertices beveled by forms of the trisoctahedron. These beveled edges display a deep purple color that contrasts with the rest of the crystal. They are translucent and stand out on a matrix with small quartz crystals. Under long-wave ultraviolet light they emit a bluish to violet color. A very aesthetic specimen.


Size: 8.2 x 5 x 5 cm.
Main crystal: 8 mm edge/arista.

Fluorescent under long wave UV
 

RM2972   Fluorite

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

This specimen of fluorite from the Berta quarry shows us groups of crystals but also isolated crystals. The matrix is "old" red granodiorite and is lined by tiny, almost colorless fluorite octahedrons. If there is something to be highlighted about this piece, it is that the octahedral fluorite crystals show the faces of the rhombododecahedron, the cube and the tetrakishexahedron at the vertices.


Size: 10.4 x 3.4 x 3.3 cm.
Main crystal: 8 mm.

Fluorescent under long wave UV
 

RM2971   Fluorite and calcite

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

Group of octahedral fluorite crystals, transparent and showing an intense green color. They are accompanied by small calcite crystals, very faceted, transparent and brilliant. Both fluorite and calcite fluoresce under long-wave ultraviolet light. This type of gray granite matrix is classic for the most modern specimens and comes from the lower levels of the Berta quarry.


Size: 6.3 x 4.5 x 3.4 cm.
Main crystal: 13 mm edge/arista.

Fluorescent under long wave UV
 
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