Interesting pyromorphite with 3mm crystals from a classic, German location from the Rhineland-Palatinate. This is a classic Ems District pyromorphite of very fine combination quality. The famous Rosenberg Mine closed in 1963 and this piece certainly dates to between 1945 and the time the mine closed. It is accompanied by vintage labels #6985 from the collection of Joe Cilen (1916-1997), one of the best-known mineral collectors in the northeastern United States.

Sold

From a classic German locality and well-known collectors such as Joan Viñals and Emili Nicolau, belongs this specimen of native bismuth, weighing 293 g. We can see numerous indentations formed by tree-like bismuth crystals on its surface. A specimen with history, recommended for collectors of "gray" minerals.

Sold

A specimen of stibnite from this classic German locality. The specimen belongs from the F. Coune collection (Belgium) and was adquired in the early 1970s. It shows a radial aggregate of acicular crystals of this antimony sulfide. It is arranged on a matrix with pyrite, quartz, and calcite crystals.

Solid cluster of intergrown nickelskutterudite (formerly called chloanthite) from the historic Schlema-Hartenstein District. Chloanthite is now regarded as an arsenic-deficient variety of nickelskutterudite or simply as a synonym for nickelskutterudite. Nowadays is very complicate find specimens of this size and quality. Complex crystals, bright, with faces... A piece highly valued by mineralogists. From the Type Locality. Only for "deep & dark collectors". It belongs from Joan Viñals and the Emili Nicolau collection (Barcelona).

Sold

A very aesthetic and classic specimen of the hard to find and attractive chalcopyrites from the Friedrich-Wilhelm Mine. This specimen shows a brilliant, metallic, semi-iridescent, brass colored crystals of chalcopyrite scattered on the underlying quartz matrix. Richly faceted, with complex forms on the chalcopyrites. Very old material. From the former J. Vilaseca collection (Barcelona).

260 €

Buy

In this specimen we can observe white massive-crystalline aggregates of picromerite K₂Mg(SO₄)₂·6H₂O, along with colourless halite, with iron oxides that give red colors. This is old material so nowadays, it is very difficult to find. Comes from the Nicolau collection (Barcelona).

A 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.

470 €

Buy

Old specimen that shows numerous aggregates of nickelskutterudite crystals, formerly called chloantite. Bright globular aggregates stand out against the metallic matrix. It is accompanied by the handwritten label of Joan Viñals and comes from the Nicolau collection (Barcelona).

110 €

Buy

Massive specimen of dialogite, former name for rhodochrosite. This specimen is of historical interest along with the old label that accompanies it. The sites of the old mines are now largely obscured, but there are some overgrown dumps remaining in the forest.

The silver specimens from this classic German mine has been known for a long time, but in these specimens silver is included in chrysocolla, of an intense greenish blue colour, and shows a remarkable luster, sometimes with golden iridescence. Under magnification we can see facets of crystals of this metal. We have analyzed these samples and the results indicate that they do not contain other metals detectable by SEM-EDS. These specimens are already a few years old.

65 €

Buy

Druse of small white crystals of tacharanite (basalt-hosted zeolite) forming aggregates with approximately globular shape, coating a basalt rocky matrix. Really interesting sample and locality.

Sold

Groups of intensely colored clinoclase crystals that stand out on the quartz matrix.

The silver specimens from this classic German mine has been known for a long time, but in these specimens silver is included in chrysocolla, of an intense greenish blue colour, and shows a remarkable luster, sometimes with golden iridescence. Under magnification we can see facets of crystals of this metal. We have analyzed these samples and the results indicate that they do not contain other metals detectable by SEM-EDS. These specimens are already a few years old.

Sold

Rich groups of mixite crystals, arranged on a matrix with quartz. Joan Viñals' label indicates that it comes from the Daniel mine, in the same area as the waste dumps known as Schmiedestollen, the most famous dump in the Wittichen area, currently heavily restored. It does not belong to any real mine, but was driven to transport minerals from the nearby Alt St Joseph and Gnade Gottes mines, with which it is connected underground (see mindat), which indicates that some specimens from this dumps may belong also from this mine.

Sold

Small silver skeletal aggregates, golden to bronze in color, shiny, and emerging from a mass of native arsenic. This specimen has not been acidified like many specimens we see on the market.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat).

Brilliant aggregates of small safflorite crystals, accompanied by nickelskutterudite. We can see small proustite crystals with a magnifying glass, along with cobalt and nickel arsenates. A specimen from a classic locality.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat). These type of specimens, although they are not "aesthetic", have an essential systematic and historical interest. For lovers of "gray minerals", like myself...

This good-sized specimen stands out for its branched nickelin growths, with its characteristic bronze color and shine. We can observe crystals in some cavities. It is covered with small safflorite crystals with a gray metallic luster. It is very interesting to observe this substitution. We can also observe well-defined crystals of nickelskutterudite, partially coated with pink cobalt arsenates.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat). These type of specimens, although they are not "aesthetic", have an essential systematic and historical interest. For lovers of "gray minerals", like myself...

Bright silvery to bronze aggregate of allargentum (upper left corner) on matrix. Two sides of the matrix are covered with minute safflorite crystals. The allargentum has pseudocrystalline habit.
Shaft 371 is the main shaft of the former Aue Mining Company (formerly Object 09) of SDAG Wismut, a uranium mine in the Westerzgebirge. With a total depth of more than 1,800 m, the mine was the deepest mine in Germany until its closure (mindat). These type of specimens, although they are not "aesthetic", have an essential systematic and historical interest. For lovers of "gray minerals", like myself...

Sold

This specimen shows numerous intense red-orange crystals of crocoite accented by yellow-green microcrystals of vauquelinite. The combination of intensely colorful species made this specimen very aesthetic. It show jack-straw aggregates formed by elongated chisel shaped crystals. Few samples are seen on the market. A rare, and important, display-quality German classic from J. Viñals and E. Nicolau collection.

Sold

Specimens of fettelite, a complex silver-mercury sulfoarsenide, are very rare and even less so at this size. Under magnification we can observe burgundy red laminar crystals of fettelite, together with idiomorphic crystals of proustite. An exceptional piece.

Sold

Rübenkeller is the famous historical locality for chabazite and phillipsite from about 1850 and was very prolific in zeolite specimens in the late 19th century. In this specimen, from the Freiburg Bergakademie, we can see various aggregates of very well defined, pseudocubic, transparent and very bright crystals, which fill the vacuoles of the volcanic rock. It is accompanied by a very interesting old handwritten label.

Sold

Group of barite crystals, of good size, well defined and richly faceted, transparent to translucent and with a honeyed hue. They are disposed in a very aerial way on a matrix with fluorite and quartz.

Sold

Group of very good size baryte crystals, well-defined faces and edges, transparent to translucent, with inclusions of pyrolusite and quartz.

An azurite specimen from this classic German locality, to be enjoyed under magnification. These are aggregates of azurite crystals, some isolated, richly faceted, with transparence, brilliance and the characteristic colour. With globular aggregates of malachite. Very aesthetic.

The silver specimens from this classic German mine has been known for a long time, but in these specimens silver is included in chrysocolla, of an intense greenish blue colour, and shows a remarkable luster, sometimes with golden iridescence. Under magnification we can see facets of crystals of this metal. We have analyzed these samples and the results indicate that they do not contain other metals detectable by SEM-EDS. These specimens are already a few years old.

Sold