Group of doubly terminated quartz crystals, with developed prisms and defined terminal faces, translucent. With interesting parallel growths. 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: 7.8 x 4.3 x 3.7 cm.
Found in ±2017.

Aggregates of brilliant and transparent baryte crystals, with a slightly yellow tone. They are accompanied by small crystals of sphalerite, with complex forms, and galena. It comes from the Mines d'Osor, currently closed and from which it is impossible to obtain these specimens. The mine closed in 1979 and had eleven levels, with a 290 meter deep shaft. You can still see the ruins of the old facilities and the well from which sphalerite, galena and fluorite were extracted and treated.

Size: 8.6 x 5.4 x 3.4 cm.
Main crystal: 7 mm.
Found in ±1975.

Col. L. Daunis (Barcelona).
Classic locality

Groups of vanadinite crystals, isolated, very brilliant and with an intense color. It comes from the Joan Astor collection (Barcelona), with a handwritten and typewritten label.

Size: 10 x 4.8 x 4.6 cm.
Main crystal: 4 mm.
Found in ±1977.

Col. J. Astor, Barcelona.

Stibiconite species totally replacing a stibnite crystal, very elongated, with multiple terminations and partially covered by scalenohedral calcite crystals with staggered growths. A classic of Mexican mineralogy. It belongs to the former Joan Astor collection (Barcelona) with a handwritten and typewritten label.

Size: 8 x 1.4 x 0.9 cm.
Found in ±1976.

Col. J. Astor, Barcelona.
Classic locality

Groups of octaedral magnetite crystals, some in staggered growth, with an excellent luster, very well defined faces and edges. They are disposed on a matrix of microcline crystals.

Size: 5 x 4.6 x 3.3 cm.
Main crystal: 5 mm.

Fan-shaped aggregates of epidote crystals with an intense green color and luster. They are accompanied by hyaline quartz crystals and fine olive green actinolite needles. A different specimen from this classic Moroccan locality.

Size: 8,6 x 6,5 x 5,2 cm.
Main crystal: 2 cm.

Group of hexagonal pr¡smatic crystals showing a good brilliance, characteristic color and very well defined faces and edges. From a classic Spanish mine.

Size: 12 x 7.8 x3.5 cm.
Main crystal: 1.1 cm.
Found in 1999.

Aesthetic quartz specimen, very transparent and with orange inclusions. It shows a very curious window growths and some facets of the rhombohedron. These specimens come from a little-known locality. Really interesting.

Size: 4.3 x 3 x 1.9 cm.
Found in 2018.

This specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. A classic by itself.

Size: 3.9 x 2.4 x 2.1 cm.

This specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. A classic by itself.

Size: 4 x 3.9 x 2.7 cm.

This specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. Good size. A classic by itself.

Size: 5.7 c 2.6 x 2.2 cm.

This specimen is one of the well-known calcite after glauberite pseudomorphs from Arizona. This aesthetic floating specimen shows interpenetrated crystals, very well defined faces and edges and a delicate cream tone. Good size. A classic by itself.

Size: 5.2 x 2.9 x 2.9 cm.

Classic locality

This Spanish aragonite specimen shows two twinned and interpenetrated crystals. They have a really good brilliance and tones those varies from whitish to brown, translucent. Twinned cyclically on {110} and showing a hexagonal prismatic habit. It comes from the Arguijo collection.

Size: 3.6 x 2.8 x 2.3 cm.
Main crystal: 2.9 & 2.2 cm.
Found in ca. 1980.

Col. A. Arguijo (L'Hospitalet de Llobregat).

Siderite rhombohedral crystals, flattened, bright and defined. They have a honeyed to golden colour, with a second generation of smaller crystals. They are disposed on a matrix. Siderite specimens from this Catalan mine are uncommon.

Size: 7.4 x 6.8 x 4.6 cm.
Main crystal: 0.9 cm.

Col. J. Povill (Olesa de Montserrat).

Rich aggregate of tabular baryte crystals, brilliant, defined and between translucent to transparent on the edges. From a classic locality for the Spanish mineralogy.

Size: 6.2 x 4 x 3 cm.
Main crystal: 1 cm.
Found in ca. 1996.

Col. Joan Astor (Barcelona). cv.

Group of very elongated quartz crystals, with developed prisms and well-defined rhombohedral terminal faces. Very transparent. Some faces of the prism show growth oriented cavities.

Size: 6.9 x 4.6 x 3.5 cm.
Main crystal: 6.9 x 1 cm.

Col. J. Astor (Barcelona).

Tetrahedrite crystals from this Asturian mine are well known and prized by Spanish collectors. In this sample we have tetrahedral crystals, one of them predominant, in which the tris-tetrahedron shapes seem to point. Good size and partially covered by malachite. X ray diffraction analysis (we will send to the buyer) has shown the presence of digenite associated with the alteration of the tetrahedrite. A classic.

Size: 3.1 x 2.7 x 2.5 cm.
Main crystal: 1 cm.

Analyzed specimen with report

These specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.

Size: 6.3 x 2.5 x 2.4 cm.
Main crystal: 1.2 cm.
Found in 03/2020

Analyzed specimen with report

These specimens of manganite partially replaced pyrolusite, come from a locality not yet described in the mineralogical bibliography. This deposit is located in the province of Boulemane, in the Fez-Meknés region, about ten kilometers from the well-known Aouli mines. It is a formation very similar to that of Imini (near Ouarzazate). These manganese deposits, both in Imini and in the Boulemane area, were formed in a karst system. Associated with shallow marine dolomites of the Cretaceous age and that currently form sub-horizontal mantles cutted by erosion, overlaping areas of volcanic rocks. Manganese minerals are found in dolomite breccia and ferruginous clays. We have carried out X-ray diffraction studies showing us the presence of both species: manganite and pyrolusite.

Size: 7 x 4 x 3 cm.
Main crystal: 1.8 cm.
Found in 03/2020

Analyzed specimen with report

Group of fan-shaped prismatic epidote crystals, brilliant and with an intense green color. These specimens come from a not well-known quarry, close to Medina de Pomar, in Burgos, from a quarry where the ofites have been mined by the company Minera Ofitas del Norte.

Size: 8.5 x 4.4 x 3.8 cm.
Main crystal: 1 cm.

Rich group of fan-shaped prismatic epidote crystals, brilliant and with an intense green color. These specimens come from a not well-known quarry, close to Medina de Pomar, in Burgos, from a quarry where the ofites have been mined by the company Minera Ofitas del Norte.

Size: 6.2 x 4.8 x 1.8 cm.
Main crystal: 1.1 cm.

Group of cubic fluorite crystals, slightly bevelled, with an intense violet color with geometric zoning, between transparent and translucent. They show polysynthetic growths forming tiled structures on the faces of the cube. On some fluorite crystals, a generation of small scalenohedral calcite crystals, very transparent and bright, has formed. They are disposed on a matrix with baryte and calcite. Not very common in the market. They show some fluorescence under ultraviolet light.

Size: 8.2 x 5.2 x 4 cm.
Main crystal: 1.2 cm.

Fluorescent under LW-UV and SW-UV lights

Globular aggregates of malachite, with an intense green color, brilliant and that stand out on a matrix of calcite. A specimen from Tsumeb and belonging from the Manchion collection (Barcelona).

Size: 7.2 x 4.8 x 4.3 cm.
Main crystal: 0.5 cm.

Classic locality

On a recent trip to this mining area, we found these new specimens with incredible aesthetics. They were found in a singular cavity, opened in the depths of a 24-meter well, in Coud'a shafts. They have a more than exceptional brilliance, probably due to a last phase of crystallization in which a thin layer of almost transparent vanadinite was deposited. Crystals are very well defined, with staggered axial growths in the prism and with color zoning, more orange than red. Contrasting on a solid rocky matrix. Vanadinites from the Mibladen area are well known worldwide and although we have seen many of them, they never cease to amaze us. Amazing specimens!

Size: 10 x 8.5 x 7 cm.
Main crystal: 1.2 cm.
Found in 02/2020.

On a recent trip to this Moroccan mining area, we found these stalactitic specimens of vanadinite with incredible aesthetics. They were found in a singular cavity, opened in the depths of a 24-meter well, in the Coud'a shafts area. They have a really good brilliance. Crystals show attractive stalactitic growths, also uneven developments in the directions of the prism, very well defined, interpenetrated and with some color zoning. Vanadinite specimens from Mibladen area are well known iworlwide and although we have seen many, they never cease to amaze us. Exceptional specimens.

Size: 5.7 x 3 x 1.8 cm.
Found in 02/2020.