Rosell Minerales
RM3008 Fehrite and devilline
Les Ferreres mine, Rocabruna, Camprodon, Girona, Catalunya, SpainFehrite 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

RM3006 Silver, var. kongsbergite
Santa Matilde open pit, Grupo minero Berja, Las Herrerías, Sierra Almagrera, Cuevas del Almanzora, Almería, Andalucía, SpainThese specimens are a classic from Las Herrerías mine, and they appeared many years ago. In this piece we can observe a cavity in the rock partially filled with silver foliaceous aggregates, kongsbergite variety, very brilliant and with a silver color with bronze reflections and bluish iridescence, characteristic for the species. This aesthetic and historical specimen has been analyzed and the result will be sent to the buyer. It belongs from the Rolando Gallina mineral collection (Italy).
Size: 5.1 x 5 x 3.7 cm.
Col. Rolando Gallina (Italia).
Classic locality
RM3007 Malachite
Kakanda deposit, Lubudi, Lualaba, Congo, Democratic Republic ofThese specimens of malachite present mamelonar, botryoidal to stalactic growths, with a very intense characteristic green color and silky luster. If they are observed under magnification, they show us that the sparkly green is produced by small malachite crystals that cover the surface. The photograph does not reflect all the splendor and brilliance of the piece. They are disposed on a fibrous malachite matrix. Very aesthetic.
Size: 11 x 8.5 x 4.2 cm.
RM3005 Malachite
Kakanda deposit, Lubudi, Lualaba, Congo, Democratic Republic ofThese specimens of malachite present mamelonar, botryoidal to stalactic growths, with a very intense characteristic green color and silky luster. If they are observed under magnification, they show us that the sparkly green is produced by small malachite crystals that cover the surface. The photograph does not reflect all the splendor and brilliance of the piece. They are disposed on a fibrous malachite matrix. Very aesthetic.
Size: 6.2 x 6.6 x 3.5 cm.
RM3004 Malachite
Kakanda deposit, Lubudi, Lualaba, Congo, Democratic Republic ofThese specimens of malachite present mamelonar, botryoidal to stalactic growths, with a very intense characteristic green color and silky luster. If they are observed under magnification, they show us that the sparkly green is produced by small malachite crystals that cover the surface. The photograph does not reflect all the splendor and brilliance of the piece. They are disposed on a fibrous malachite matrix. Very aesthetic.
Size: 5.9 x 5.5 x 3.6 cm.
RM3003 Malachite
Kakanda deposit, Lubudi, Lualaba, Congo, Democratic Republic ofThese specimens of malachite present mamelonar, botryoidal to stalactic growths, with a very intense characteristic green color and silky luster. If they are observed under magnification, they show us that the sparkly green is produced by small malachite crystals that cover the surface. The photograph does not reflect all the splendor and brilliance of the piece. They are disposed on a fibrous malachite matrix. Very aesthetic.
Size: 9.2 x 6.5 x 6.2 cm.
RM2999 Pyrolusite and manganite
Gremmelsbach, Triberg im Schwarzwald, Freiburg, Baden-Württemberg, GermanyA novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.
Size: 8.8 x 7.4 x 5.2 cm.
Main crystal: 4.2 cm.
Found in 2021.
Analyzed specimen with report

RM2998 Pyrolusite and manganite
Gremmelsbach, Triberg im Schwarzwald, Freiburg, Baden-Württemberg, GermanyA novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.
Size: 6.7 x 5.5 x 4.1 cm.
Found in 2021.
Analyzed specimen with report

RM2997 Pyrolusite and manganite
Gremmelsbach, Triberg im Schwarzwald, Freiburg, Baden-Württemberg, GermanyA novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.
Size: 9 x 5.8 x 3.8 cm.
Main crystal: 3 cm. rad.
Found in 2021.
Analyzed specimen with report

RM2996 Pyrolusite and manganite
Gremmelsbach, Triberg im Schwarzwald, Freiburg, Baden-Württemberg, GermanyA novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.
Size: 7.4 x 5.4 x 3.2 cm.
Main crystal: 4.7 cm.
Found in 2021.
Analyzed specimen with report

RM2995 Pyrolusite and manganite
Gremmelsbach, Triberg im Schwarzwald, Freiburg, Baden-Württemberg, GermanyA novelty from Sainte-Marie-aux-Mines 2022. These specimens come from a recent find in this mining area of the Black Forest and are reminiscent of those found decades ago in this area. They show radial aggregates of extremely brilliant pyrolusite crystals that partially replace manganite. By X-ray diffraction we have been determined the presence of both species, even with a certain predominance of manganite. They usually appear on a matrix of pink granite or as groups of large crystals in parallel growth. In the specimens we can observe the inclined flattened terminal faces. They are highly aesthetic pieces those will become part of the best specimens of these species for European mineralogy. We will send the XRD to the buyer.
Size: 7.2 x 7 x 4.1 cm.
Main crystal: 2.7 cm.
Found in 2021.
Analyzed specimen with report

RM3001 Hydroxilherderite with albite
Valle de Piauí, Taquaral, Itinga, Minas Gerais, BrazilIn this specimen we can observe numerous prismatic crystals of hydroxylherderite, an unusual calcium and beryllium hydroxylphosphate, with a very uniform beige color, very well defined faces and edges and with twinning. They are disposed on a matrix formed by albite crystals. The specimen is from the Piauí Valley, an area very rich in lithium-bearing pegmatites.
Size: 6.4 x 4.7 x 3.9 cm.
Main crystal: 1.4 cm.
RM3000 Phosgenite, Anglesite and Galena
Monteponi, Iglesias, Carbonia-Iglesias, Sardegna, ItalyThe 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, ItalyRich 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), SpainGroup 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, GermanyAesthetic 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, PerúThese 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, PerúThese 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, FranceGlobular 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.

RM2986 Anhydrite, pyrite and dolomite
Miniera di Campiano, Montieri, Grosseto, Toscana, ItalySpecimen 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.
RM2985 Hydroboracite
Bigadiç Mine, Bigadiç, Balikesir, TurkeyExcellent 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 AfricaRare 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, SpainBaryte 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
RM2982 Quartz with kaolinite
Serrabal mine, Vedra, A Coruña, Galícia, SpainFloating 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, SpainFluorite 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
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