Very brilliant group of interpenetrated cube-octahedral skutterudite crystals, with very well defined faces and edges. They are included in a matrix with pinkish dolomite, NOT acidified. Very aesthetic and sized.

Size: 5.5 x 5.0 x 3.5 cm.
Main crystal: 14 x 14 mm.
Found in 2015.

I purchased this specimen more than 10 years ago to the dissapeared dealer Baikal Geo (Madrid). It consists in a rich group of fibrous to prismatic aggregates of brilliant, transparent to white cerussite on a goethite matrix. This specimen is labeled from Trevellance mine, a very old Cornish mine worked for some time during the 1840s. Very interesting specimen from a rare English locality.

Size: 5.2 x 4.7 x 2.8 cm.
Main crystal: 8 x 2 mm.

Very aesthetic group of tabular baryte crystals, with a delicate blue color, brilliant and transparent. Damage free, with some goethite inclusions. Very aerial disposed on the matrix.

Size: 5.0 x 4.5 x 3.5 cm.
Main crystal: 40 x 30 mm aggr.

Very aesthetic group of tabular baryte crystals, with a delicate blue color, brilliant and transparent. Damage free. Very aerial disposed on the matrix.

Size: 6.0 x 4.5 x 3.6 cm.
Main crystal: 28 x 20 mm. aggr.

Group of sharp fluorapatite crystals of good size showing parallel growth, an elongated prism with vertical striations, and multiple terminal faces truncated by the pinacoid. Good brilliance, translucent and a very distinctive greenish yellow color. They present numerous inclusions of flattened prismatic deep black crystals, also vertically striated and opaque. SEM-EDS analyses indicate that they probably belongs to the hornblende group, most likely magnesio-ferri-hornblende. We will send analysis to the buyer. A very aesthetic and aerial shape specimen.

Size: 7.0 x 3.0 x 3.0 cm.
Found in 2016.

Group of sharp fluorapatite crystals of good size showing an elongated prism with vertical striations, and multiple terminal faces truncated by the pinacoid. Good brilliance, translucent and a very distinctive greenish yellow color. They present numerous inclusions of flattened prismatic deep black crystals, also vertically striated and opaque. SEM-EDS analyses indicate that they probably belongs to the hornblende group, most likely magnesio-ferri-hornblende. We will send analysis to the buyer. A very aesthetic and aerial shape specimen.

Size: 7.5 x 4.5 x 2.2 cm.
Main crystal: 13 x 13 mm.
Found in 2016.

Aesthetic anglesite specimen that shows a rich group of crystals with a razor-sharp chisel terminations, striated faces characteristic of the species, very sharp and with good transparency and colorless. This specimen date to the late 1970s and were found in the well known Moroccan mining area of Touissit.

 

Size: 7.5 x 6.0 x 3.7 cm.
Main crystal: 12 x 10 mm.
Found in ±1975.

Fluorescent under long wave UV

Good sized almandine crystal, with defined faces, with forms of the dodecahedron and rounded edges. It is partially coated by mica. It presents molds of contact with other crystals those growth with. A former specimens, nowadays very difficult to get, a classic for the Spanish mineralogy.

Size: 8.8 x 6.2 x 5.5 cm.
Found in 1973.

Collected by Marçal Llòria.

If something I like about the world of selling minerals is to find specimens lost in the nooks of old collections. This sample is a case of this. It is an Australian piece, of good size, formed by a druse of ferro-axinite crystals, not very big, but with an excellent color and transparency. They are accompanied by calcite and curious milky quartz. The specimen comes from a locality located NW of Queenstown, Tasmania, a big skarn that was worked by their sulfides: pyrite, pyrrhotite, arsenopyrite, chalcopyrite. Under the calcite ferro-axinite appeared... But a long time ago.

Size: 9.8 x 8.0 x 7.0 cm.
Main crystal: 8 x 1 mm.

Brilliant specimen of this Peruvian mine with a good size. It is a druse of quartz and calcite crystals, very bright and showing a bluish tone due to they are covering chrysocolla. Over them, we can see numerous groups of bright green clinoatacamite crystals. Well defined faces and edges, interpenetrating and isolated. A fine quality specimen, colorfull and with aesthetics.

Size: 10.0 x 9.7 x 5.2 cm.
Main crystal: 2 x 2 mm. clinoat.
Found in 2015.

Rich group of globular aggregates of mimetite, with an intense orange color. Good size. It comes from an area of the German Black Forest where nowadays it is forbidden collect minerals.

Size: 9.3 x 7.8 x 4.0 cm.
Main crystal: 10 x 8 mm. glob.

Very sharp dipyramidal scheelite crystals those are coated by lemon yellow stolzite. They are disposed on a flattened hübnerite crystal partially covered by quartz crystals. Pure aethetic specimen.

Size: 4.3 x 3.7 x 2. 8 cm.
Found in 2015.

Fluorescent under short wave UV

Very sharp dipyramidal scheelite crystals those are coated by lemon yellow stolzite. They are on a matrix of quartz crystals. A very interesting and aethetic miniature.

Size: 2.7 x 1.9 x 1.7 cm.
Found in 2015.

Fluorescent under short wave UV

Group of sharp vivianite crystals forming aggregates. Excellent brilliance and intense deep green color, visible at the terminal faces of the crystals. These minerals appear in phosphate vein, in fossiliferous areas, the phosphate source.

Size: 7.5 x 6.0 x 3.0 cm.
Main crystal: 27 x 3 mm.

Iceland was known historically for its zeolites, before than Indian ones flood the collections. In this old specimen of "desmin" we can enjoy a group of sharp stilbite crystals, with good size and notable luster. On matrix. A piece for leading mineral collectors.

Size: 6.0 x 5.5 x 4.0 cm.
Main crystal: 32 x14 mm.

This specimen is really interesting not only for the quality of the crystal but the locality it comes from. Few specimens are represented in collections. This sample shows a brilliant metallic luster and sharp faces and edges. Located in a gully, this locality consists of outcropping hydrothermally-altered and weathered Wooltana volcanics containing veins and pockets of zeolites, calcite and crystallised ilmenite.

Size: 5.3 x 4.7 x 2.8 cm.
Main crystal: 27 x 20 x 8 mm.

Brilliant group of chalcopyrite crystals, twinned and with complex forms, but with well defined faces and edges. The golden color, with iridescence, indicates that it is a "old" specimen. The piece comes from an interesting and classic English locality where few chalcopyrite specimens are known with this quality. These specimens were obtained at the beginning of XX century, it is a very "old" mineralogical sample from Clemens A. Winkler, german chemist who discovered the Germanium.

Size: 6.0 x 3.8 x 3.6 cm.
Main crystal: 8 x 8 mm.
Found in ±1900.

Excol. Clemens A. Winkler (1838-1904).

Defined beryl (var. emerald) crystal in a matrix micasquist. The color, transparency and luminosity of beryl are quite good. It shows a defined prism with top pinacoidal faces. The specimen is significant as a locality piece.

Size: 5.5 x 3.8 x 1.8 cm.
Main crystal: 14 x 5 mm.

An old specimen collected in the 50s by L. Gautron in the pegmatite dikes those are located about 20 km SW of the city of Antsirabé, in the main highland of Madagascar. It is a euxenite-(Y) crystal showing defined faces and rounded edges, with good size. A historical specimen.

Size: 3.4 x 2.0 x 1.5 cm.
Found in ±1950.

Excol. L. Gautron.
Presents radioactive activity.

Group of aegirine parallel growth with very elongated crystals, bright faces and very sharp and acute termination. Almost black green that makes it stand out for its aerial position on a matrix of smoky quartz crystals. A nice gem.

Size: 6.0 x 4.3 x 4.3 cm.
Main crystal: 34 x 4 mm.

Very elongated crystal of aegirine, brilliant, defined with clearly visible terminal faces. A very aerial and aesthetic piece.

Size: 5.8 x 5.3 x 4.0 cm.
Main crystal: 34 x 4 mm.

A very aethetic miniature specimen of sérandite, showing a good salmon color. Defined and with a nice size... From the classic MSH.

Size: 2.3 x 1.3 x 0.9 cm.

A specimen for systematic collectors... A large group of needle-like colorless crystals (prismatic) of artinite, forming aesthetic rosettes. But in this sample we highlight some aggregates of desautelsite crystals, a rare manganese and magnesium carbonate found in very few locations. They are orange crystals forming groups together with the artinite.

Size: 4.3 x 1.6 x 1.8 cm.

A specimen for systematic collectors... A large group of needle-like colorless crystals (prismatic) of artinite, forming aesthetic rosettes. But in this sample we highlight some aggregates of desautelsite crystals, a rare manganese and magnesium carbonate found in very few locations. They are orange crystals forming groups together with the artinite.

Size: 4.4 x 2.4 x 1.4 cm.

Excellent groups formed by lamellar crystals of claraite, of an intense turquoise blue, on a matrix of dolomite and sulphides. It is accompanied by spheric aggregates of theisite crystals. Analysis results will be sent to the buyer.

Claraite is a rare copper and zinc carbonate which may contain sulfur and/or arsenic. Theisite is a rare copper and zinc arsenate-antimonate that has been described for the first time in this mine in the Catalan Pyrenees. These mineral species are the second citation in Spain.
We have published a book called "Rocabruna i el seu entorn. La mina de les Ferreres" where you could enjoy all species collected and determined until the date of publication (2014).

Size: 4.0 x 3.8 x 3.5 cm.
Found in 2015.