A huge size topaz crystal well disposed on the rhyolite matrix. It shows well defined faces and edges, excellent transparency and uniform toasted honey tone. It shows natural cleavage planes. A gem from a classic locality.

Size: 7.7 x 6.5 x 5.8 cm.
Main crystal: 38 x 8 mm.

A very nice specimen from a classic American locality. A group of interpenetrated calcite crystals showing curvatures on their faces and edges. They are transparent to translucent and have a delicate yellow color with zonation. With small rhombohedral crystals of dolomite, peppered by microcrystals of chalcopyrite.

Size: 9.0 x 8.5 x 7.5 cm.
Main crystal: 5.2 x 1.8 cm.

A very nice specimen from a classic American locality. A group of doubly terminated crystals showing parallel growth and curvatures on their faces and edges. They are translucent and have a delicate yellow color. With small rhombohedral crystals of dolomite, peppered by microcrystals of chalcopyrite.

Size: 9.2 x 5.8 x 3.8 cm.
Main crystal: 7.2 x 2.5 cm.

A very rich group of siderite crystals from an extinct locality such as Arteal Tunnel. It occurs as aggregates of lenticular crystals with parallel growths, very bright and deep brown color. With a second siderite generation of small sharp crystals. In fresh fracture green color siderite is observed.

Size: 6.7 x 4.8 x 3.5 cm.
Main crystal: 24 x 18 mm.

A very rich group of siderite crystals from an extinct locality such as Arteal Tunnel. It occurs as aggregates of lenticular crystals with parallel growths, very bright and deep brown color. In fresh fracture green color siderite is observed. Very aesthetic.

Size: 6.7 x 5.3 x 2.3 cm.
Main crystal: 16 x 10 mm.

Group of very sharp carrollite crystals showing cube forms more developed than the octahedron ones. Very bright and interpenetrating each other. Exceptional metallic luster. Highlights this specimen by small sharp and twinned crystals of chalcocite which are disposed on the carrolite faces. An unusual and very aesthetic combination.

Size: 5.0 x 4.0 x 2.4 cm.
Main crystal: 15 x 12 mm.
Found in 2001.

At the beginning of 2014, reviewing some specimens from the Santa Matilde open pit we found into the vugs some groups of lanceolated, fibrous or equidimensional crystals, with pink, beige to white colours, those aroused our interest. After some analysis we could identify as fluorcalcioroméite species (Ca,Na)2Sb5+2O6F,OH), with a small percentage of oxyplumboroméite (Pb2Sb2O7, due to the presence of lead).
Both species belong to the isometric system. But the observed symmetry indicated that they are, highly probable, a pseudomorph after stibnite and/or bournonite crystals. This is the first report of this mineral in the Iberian Peninsula. Nowadays this quarry is completelly filled by rubble. In this specimen we can see some aggregates, one of them predominant, formed by several lanceolated to needle-like crystals, with luster, beige to ocher tone, accompanied by aesthetic baryte crystals. We will send a copy of the analysis (SEM-EDS, XRD) to the buyer.

Size: 7.4 x 5.5 x 5.2 cm.
Main crystal: 3 x 3 mm.
Found in ±2004.

Mineral analizado / Analyzed species.

At the beginning of 2014, reviewing some specimens from the Santa Matilde open pit we found into the vugs some groups of lanceolated, fibrous or equidimensional crystals, with pink, beige to white colours, those aroused our interest. After some analysis we could identify as fluorcalcioroméite species (Ca,Na)₂Sb⁵⁺₂O₆F,OH), with a small percentage of oxyplumboroméite (Pb₂Sb₂O₇, due to the presence of lead). Both species belong to the isometric system. But the observed symmetry indicated that they are, highly probable, a pseudomorph after stibnite crystals. This is the first report of this mineral in the Iberian Peninsula. Nowadays this quarry is completelly filled by rubble. In this specimen we can see two vugs with rich aggregates formed by lanceolated to fibrous crystals, with luster, beige to pink color, accompanied by aesthetic baryte crystals. We will send a copy of the analysis (SEM-EDS, XRD) to the buyer.

Size: 7.0 x 5.5 x 5.0 cm.
Main crystal: 3.5 x 3 mm.
Found in ±2004.

Mineral analizado / Analyzed species.

At the beginning of 2014, reviewing some specimens from the Santa Matilde open pit we found into the vugs some groups of lanceolated, fibrous or equidimensional crystals, with pink, beige to white colours, those aroused our interest. After some analysis we could identify as fluorcalcioroméite species (Ca,Na)₂Sb⁵⁺₂O₆F,OH), with a small percentage of oxyplumboroméite (Pb₂Sb₂O₇, due to the presence of lead). Both species belong to the isometric system. But the observed symmetry indicated that they are, highly probable, a pseudomorph after stibnite crystals. This is the first report of this mineral in the Iberian Peninsula. Nowadays this quarry is completelly filled by rubble. In this specimen we can see rich aggregates formed by lanceolated crystals, with luster, beige to ocher color, accompanied by aesthetic baryte crystals. We will send a copy of the analysis (SEM-EDS, XRD) to the buyer.

Size: 6.8 x 5.4 x 4.5 cm.
Main crystal: 3 x 3 mm.
Found in ±2004.

Mineral analizado / Analyzed species.

At the beginning of 2014, reviewing some specimens from the Santa Matilde open pit we found into the vugs some groups of lanceolated, fibrous or equidimensional crystals, with pink, beige to white colours, those aroused our interest. After some analysis we could identify as fluorcalcioroméite species (Ca,Na)₂Sb⁵⁺₂O₆F,OH), with a small percentage of oxyplumboroméite (Pb₂Sb₂O₇, due to the presence of lead). Both species belong to the isometric system. But the observed symmetry indicated that they are, highly probable, a pseudomorph after stibnite crystals. This is the first report of this mineral in the Iberian Peninsula. Nowadays this quarry is completelly filled by rubble. In this specimen we can see some aggregates formed by several needle-like crystals, with luster, beige to white color, accompanied by aesthetic baryte crystals. We will send a copy of the analysis (SEM-EDS, XRD) to the buyer.

Size: 5.8 x 4.0 x 3.8 cm.
Main crystal: 5 x 3.5 mm.
Found in ±2004.

Mineral analizado / Analyzed species.

At the beginning of 2014, reviewing some specimens from the Santa Matilde open pit we found into the vugs some groups of lanceolated, fibrous or equidimensional crystals, with pink, beige to white colours, those aroused our interest. After some analysis we could identify as fluorcalcioroméite species (Ca,Na)₂Sb⁵⁺₂O₆F,OH), with a small percentage of oxyplumboroméite (Pb₂Sb₂O₇, due to the presence of lead). Both species belong to the isometric system. But the observed symmetry indicated that they are, highly probable, a pseudomorph after stibnite crystals. This is the first report of this mineral in the Iberian Peninsula. Nowadays this quarry is completelly filled by rubble.
In this specimen we can see some several aggregates in the cavity formed by lanceolated to fibrous crystals, with luster, beige tone, accompanied by aesthetic baryte crystals. We will send a copy of the analysis (SEM-EDS, XRD) to the buyer.

Size: 5.7 x 4.4 x 3.4 cm.
Main crystal: 4 x 4 mm.
Found in ±2004.

Mineral analizado / Analyzed species.

At the beginning of 2014, reviewing some specimens from the Santa Matilde open pit we found into the vugs some groups of lanceolated, fibrous or equidimensional crystals, with pink, beige to white colours, those aroused our interest. After some analysis we could identify as fluorcalcioroméite species (Ca,Na)₂Sb⁵⁺₂O₆F,OH), with a small percentage of oxyplumboroméite (Pb₂Sb₂O₇, due to the presence of lead). Both species belong to the isometric system. But the observed symmetry indicated that they are, highly probable, a pseudomorph after stibnite crystals. This is the first report of this mineral in the Iberian Peninsula. Nowadays this quarry is completelly filled by rubble. In this specimen we can see some aggregates, one of them predominant, formed by several lanceolated to needle-like crystals, with luster, beige to ocher tone, accompanied by aesthetic baryte crystals. We will send a copy of the analysis (SEM-EDS, XRD) to the buyer.

Size: 6.6 x 4.8 x 4.5 cm.
Main crystal: 4.5 x 3.5 mm.
Found in ±2004.

Mineral analizado / Analyzed species.

Specimen with a good size formed by a rich group of tabular baryte crystals, very sharp and brilliant, showing pseudohexagonal forms and with a uniform ocher color. A mine poorly represented in collections.

Size: 9.8 x 8.3 x 6.5 cm.
Main crystal: 18 x 17 mm.

These specimens of brochantite from the mining area of Katanga are one of my weaknesses. The long needles of this mineral, filling cavities of the matrix, special green color, brilliance and silky luster... Pure aesthetic. I hope you enjoy it.

Size: 6.9 x 6.6 x 4.7 cm.
Main crystal: 12 mm.

Very exceptional group of bastnäsite-(Ce) crystals. Good size, defined faces and edges, transparence, brilliance... And perfectly disposed on a dolomite crystal matrix with talc. A rare opportunity to obtain a top quality specimen of this REE carbonate from this classic French talc quarry.

Size: 7.0 x 4.1 x 4.1 cm.
Main crystal: 8 x 7 mm.

It shows Pleochroism

Very exceptional group of bastnäsite-(Ce) crystals. Good size, defined faces and edges, transparence, brilliance... And perfectly disposed on a dolomite crystal matrix. A rare opportunity to obtain a top quality specimen of this REE carbonate from this classic French talc quarry.

Size: 7.0 x 6.5 x 5.7 cm.
Main crystal: 10 x 8 mm.

It shows Pleochroism

Druse formed by complex interpenetrated sphalerite crystals, with toasted honey color, some transparence and accompanied by calcite crystals. A huge size specimen from a classic Spanish locality.

Size: 11.7 x 6.8 x 4.5 cm.
Main crystal: 13 x 10 mm.

Druse of fluorite crystals with a marked color zoning. An intense violet crystal core and colorless in the edges, with some geometrical zoning on some edges. An interesting fluorite specimen. Accompanied by lenticular crystals of siderite. Very aesthetic.

 

Size: 12.3 x 9.0 x 3.8 cm.
Main crystal: 7 x 7 mm.

These specimens, novelty, 2014, show very unusual fluorite crystals, with an uncommon color. They show cubic crystals beveled by the dodecahedron and deep hoppered growths. Also almost globular crystals in which the dodecahedral forms predominate. The color is very, very intense, vivid shades that vary between indigo and navy blue, clearly visible when light is incident. We observed also green tones within a few crystals. They have grown on quartz crystals covered by layers of smaller milky quartz. An aesthetic specimen for fluorite and crystal collectors.

Size: 11.4 x 7.6 x 7.4 cm.
Main crystal: 20 x 19 mm.
Found in 2014.

These specimens, novelty, 2014, show very unusual fluorite crystals, with an uncommon color. They show cubic crystals beveled by the dodecahedron and deep hoppered growths. Also almost globular crystals in which the dodecahedral forms predominate. The color is very, very intense, vivid shades that vary between indigo and navy blue, clearly visible when light is incident. We observed also green tones within a few crystals. They have grown on quartz crystals covered by layers of smaller milky quartz. An aesthetic specimen for fluorite and crystal collectors.

Size: 9.4 x 6.7 x 6.0 cm.
Main crystal: 21 x 20 mm.
Found in 2014.

After a trip to Morocco in 2013, we analyzed few samples of a mineral similar to mimetite species. Results indicated that it was phosphohedyphane. From the same mine we have obtained some specimens of the zone in which came out in 2013 original ones, but now they showed marked differences. After a careful analysis, results indicate that these were also phosphohedyphane, but with a different shape but similar to the pyromorphite appearance. They are covering cavities of the limonite matrix, small hexagonal crystals slightly barrel-shaped, with green to a yellowish tones. Accompanied by brilliant quartz and vanadinite, some rich in arsenic. It seems that they form part of a pyromorphite-phosphohedyphane series. Analysis results will be delivered to the buyer.

Size: 4.5 x 3.6 x 3.5 cm.
Main crystal: 1 x 1 mm aggr.
Found in 2014.

After a trip to Morocco in 2013, we analyzed few samples of a mineral similar to mimetite species. Results indicated that it was phosphohedyphane. From the same mine we have obtained some specimens of the zone in which came out in 2013 original ones, but now they showed marked differences. After a careful analysis, results indicate that these were also phosphohedyphane, but with a different shape but similar to the pyromorphite appearance. They are covering cavities of the limonite matrix, small hexagonal crystals slightly barrel-shaped, with green to a yellowish tones. Accompanied by brilliant quartz and vanadinite, some rich in arsenic. It seems that they form part of a pyromorphite-phosphohedyphane series. Analysis results will be delivered to the buyer.

Size: 5.2 x 3.8 x 3.2 cm.
Main crystal: 2 x 2 mm. aggr.
Found in 2014.

On a thin limonite matrix we can enjoy two aggregates and aesthetic baryte rosettes formed by lenticular crystals are arranged. Both aggregates are complete, but one of them shows an unusual perfection. It comes from a mine known for its ocher tone barytes,but this shape is not very common in this mine.

Size: 9.0 x 7.0 x 3.5 cm.
Main crystal: 23 x 20 mm. (roseta)

A stunning corundum, var. ruby, specimen. Perfectly disposed and contrasting with the marble matrix. Very sharp, translucent, brilliance and with a deep pink to reddish color not ususal in this locality. Very fluorescent under LWUV. A perfect gem from Hunza valley area.

Size: 5.5 x 3.4 x 3.0 cm.
Main crystal: 15 x 12 mm.

Fluorescent under long wave UV

Good sized almandine group of crystals, one of them predominant and showing well marked trapezohedron faces. It is not complete, the back side is contacted with the rock. It comes from a mineral area not well represented in collections.

Size: 5.4 x 4.5 x 3.0 cm.
Main crystal: 38 x 33 mm.