Rosell Minerales

Doubly terminated quartz crystal of the Compostela hyacinth variety. In a gypsum matrix. It belongs from the former Joan Astor collection (Barcelona). The label indicates locality as Villar del Arzobispo (Valencia), a locality near Domeño.

Size: 6.5 x 5.2 x 3.9 cm.
Main crystal: 2 cm.
Found in ±1978

Col. Joan Astor (Barcelona).

Group of cubic crystals of fluorite, of good size, with tile growths on the faces. Good brilliance, transparent to translucent. Pinkish-purple color, more blue under LED light. It shows a marked geometric color zoning on the edges. With a baryte book-shape aggregate.

Size: 8.3 x 4.2 x 6.7 cm.
Main crystal: 2.8 cm.

These mines are near the Matagalls peak, in the Montseny massif, and they are also known as Matagalls mines. This sample shows us a matrix with fluorite on which an aesthetic group of book-shaped baryte crystals is disposed. These pieces appeared in the 80-90s of the last century. Nowadays it is very difficult to find good specimens.

Size: 9.3 x 6 x 5.6 cm.
Found in 1990's.

Very aerial specimen formed by groups of cubic fluorite crystals. Very well defined faces and edges, with polysynthetic growths and disposed on a matrix with quartz crystals. It is accompanied by a tabular baryte.

Size: 8.5 x 5.2 x 4.5 cm.
Main crystal: 1.4 cm.

Group of interpenetrating fluorite crystals, with an intense coluor that varies according to the type of incident light. From this classic Asturian mining area.

Size: 6.1 x 4 x 3.5 cm.

Very good size specimen, formed by numerous very well defined orthoclase crystals. It was in this classic locality in the community of Madrid where, around the 70s, the Daunis-Ruscalleda family, well-known mineral prospectors and collectors from Barcelona, found quite a few very aesthetic specimens of orthoclase/microcline, accompanied by Enrique Kucera. This specimen is one of these ...

Size: 14 x 12 x 8.5 cm.
Main crystal: 2.3 cm.
Found in 1970's.

Col. L. Daunis (Barcelona).
Classic locality

A very good sized baryte specimen, formed by some thick tabular book-shaped crystals. From a classic Murcian locality.

Size: 11 x 8 x 7 cm.

A classic specimen of the famous, but difficult to find, twinned orthoclase crystals from this locality of Bohemia. A floating specimen with the Carlsbad twin. Well defined. There has been some debate as to whether or not Loket is the type locality for the Karlsbad twin habit of feldspar, as "Karlsbad" / "Carlsbad" is the old name for Karlovy Vary. More information on this can be found in  [mindat].

Size: 4.8 x 3.4 x 1.7 cm.
Found in ±1991

Col. A. Trigo (Mataró).
Classic locality

Floater aggregate of laminar molybdenite crystals. Very brilliant. A piece of a certain size for this classic Catalan mine. From the Trigo collection (Mataró).

Size: 3.4 x 2.7 x 1.5 cm.
Found in ±1984

Col. A. Trigo (Mataró).
Classic locality

Good sized specimen with powdered cinnabar aggregates. Intense red color, with an orange point. From this classic mine in Alt Palància (Castelló). For cinnabar locality collectors.

Size: 7 x 6 x 5.2 cm.
Found in 1990's.

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

Very good size specimen formed by laminar aggregates of stibnite crystals. The San Antonio mine is located in the area called "Quinola" next to the road BA-5001 between the peoples of Alburquerque and The Codosera. This is an important antimony mine closed in 1986, and it was the largest mine of this metal in Spain and Europe. It belongs from the former Arguijo collection and dates from the 90s.

Size: 8.3 x 5 x 3.5 cm.
Found in 1990's.

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

Very good size specimen formed by laminar aggregates of stibnite crystals. The San Antonio mine is located in the area called "Quinola" next to the road BA-5001 between the peoples of Alburquerque and The Codosera. This is an important antimony mine closed in 1986, and it was the largest mine of this metal in Spain and Europe. It belongs from the former Arguijo collection and dates from the 90s.

Size: 8.2 x 5.8 x 3 cm.
Found in 1990's.

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

Classic pineapple of hematoid quartz, var. Compostela hyacinth, with good brilliance, complete and in a gypsum crystals matrix.

Size: 7.2 x 4.5 x 4.2 cm.
Main crystal: 3.6 cm. aggr.
Found in ±2016

Classic locality

Aggregates of laminar semseyite crystals, very brilliant, some with fractures, and on a galena matrix. A classic of Romanian mineralogy. Formerly in the collection of Gerd Resag.

Size: 5.6 x 3.4 x 2.5 cm.
Found in ±1960

Col. Gerd Resag.

Specimen with a visible aggregate of asbecasite, with crystal faces. Yellowish color. Disposed on a matrix with hexagonal crystals of clinochlor. A species not easy to find. This specimen comes from the type locality.

Size: 4.7 x 4.3 x 2.6 cm.
Found in ± 2005.

Type Locality

Specimen with a visible aggregate of asbecasite, with crystal faces. Yellowish color. Disposed on a matrix with hexagonal crystals of clinochlor. A species not easy to find. This specimen comes from the type locality.

Size: 5.8 x 4.9 x 3.6 cm.
Found in ± 2005.

Type Locality

Gypsum crystals from Piła are extremely rare in the mineral market. In this old specimen we have two twinned crystals with stacking very characteristic of the Polish deposit. Transparent, brilliant and defined. They present some small dent due to the softness of the species, without affecting the beauty and interest of the piece. With handwritten label.

Size: 4.8 x 4.6 x 3.8 cm.
Main crystal: 2.9 x 2.6 cm.
Found in ±1989.

Fluorescent under long wave UV

In this sample we can observe bright and aesthetic aggregates of lanceolated foliaceous hydromagnesite crystals, forming rosettes, of an intense white color, although they are colorless. All of them are arranged on a rock matrix. A Catalan piece that is difficult to find today, with rare species and with quality. Collected by Joan Astor in march, 1976.

Size: 6.2 x 4 x 3.5 cm.
Found in ±1976.

Col. J. Astor, Barcelona.

A very good size specimen formed by numerous lanceolated baryte crystals, with very good definition of faces and edges. Between transparent to translucent and with a yellowish tone with zoning. They are disposed very aerial on the matrix, with crystals of calcite and fluorite with honey tones. Fluorite is active under LW-UV light. An exceptional specimen for this classic Asturian mine.

Size: 12 x 11.7 x 11 cm.
Main crystal: 2.2 cm.

Fluorescent under long wave UV

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: 10.2 x 3.6 x 2.6 cm.
Found in ±2017.

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

Group of ferberite crystals of very good size, exceptional luster and well defined faces and edges. From this classic Portuguese mine. It belongs to the Arguijo collection.

Size: 7 x 5.3 x 4.2 cm.
Main crystal: 6.5 x 4.6 cm.
Found in ±1980.

Col. L. Arguijo, L'Hospitalet de Llobregat.

Specimen formed by aggregates of radial aragonite crystals, with very aesthetic bands of delicate blue color. This old specimen (1980s) is labeled as collected in Peñamellera, Asturies (Spain). Other specimens like this and from the same years where labelled as collected in this Asturian locality. A curiosity from the former Joan Astor collection (Barcelona). With original labelled box.

Size: 6 x 5.5 x 4.7 cm.
Found in ±1985.

Fluorescent under long wave UV

Group of analcime crystals, faceted and translucent to transparent. They are disposed on a rocky matrix partially covered by small prismatic prehnite crystals. From a currently restored quarry.

Size: 7.7 x 6.5 x 3.4 cm.
Main crystal: 6 mm.
Found in ±2017.