Rosell Minerales

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.

From specimens like these, this very rare species was identified: panasqueiraite. Identifying it in each sample is an almost impossible task. Panasqueiraite is a monoclinic calcium-magnesium phosphate, it would be an hydroxylated analog of isokite. In Panasqueira, its type locality, it is found as massive fine-grained aggregates together with other phosphates (fluorapatite, thadeuite, wolfeite, triplite, althausite and vivianite), with topaz, quartz and sulfides (arsenopyrite, pyrrhotite, chalcopyrite and sphalerite) in veins hydrothermal. The panasqueiraíta closely resembles the thadeuíta and the wolfeíta, but with the naked eye the three species can be distinguished by their slightly different colors: thadeuite: yellow-orange; wolfeite: pink salmon; panasqueiraite: pinkish orange.
Panasqueiraite crystals are not known, but there are always exfoliation planes {010}, also for thadeuite (Caries Curto, Jordi Fabre: The Panasqueira Mines. The Mineralogical Record, January-February 2014, volume 45, number 1).

Size: 5.2 x 4.6 x 2.7 cm.
Found in ±2005.

From specimens like these, this very rare species was identified: panasqueiraite. Identifying it in each sample is an almost impossible task. Panasqueiraite is a monoclinic calcium-magnesium phosphate, it would be an hydroxylated analog of isokite. In Panasqueira, its type locality, it is found as massive fine-grained aggregates together with other phosphates (fluorapatite, thadeuite, wolfeite, triplite, althausite and vivianite), with topaz, quartz and sulfides (arsenopyrite, pyrrhotite, chalcopyrite and sphalerite) in veins hydrothermal. The panasqueiraíta closely resembles the thadeuíta and the wolfeíta, but with the naked eye the three species can be distinguished by their slightly different colors: thadeuite: yellow-orange; wolfeite: pink salmon; panasqueiraite: pinkish orange.
Panasqueiraite crystals are not known, but there are always exfoliation planes {010}, also for thadeuite (Caries Curto, Jordi Fabre: The Panasqueira Mines. The Mineralogical Record, January-February 2014, volume 45, number 1).

Size: 5 x 3.7 x 2.9
Found in ±2005.

Group of very good size libethenite crystals, with a deep green color, bright and well disposed on the quartz matrix. Samples of libethenite from the Estremoz area are not often seen. They could belong from Miguel Vacas, but the label of Manuel L. Adónis clearly indicates Estremoz, where similar specimens have been found.

Size: 4.3 x 4 x 2 cm.
Main crystal: 6 mm arista/edge.

Col. Manchion (Barcelona). Col. Manuel L. Adónis.

Very sharp hexagonal fluorapatite crystal, with visible colour zoning, more intense in the core area and clearer in edges. Bright and defined, with another doubly terminated smaller crystal on one of the pinacoidal faces. It is accompanied by muscovite.

Size: 4 x 3 x 2.7 cm.
Main crystal: 3.8 x 1.7 cm.
Found in 1989.

Col. Manchion (Barcelona).

A first line arsenopyrite specimen from Panasqueira. It is a large group of prismatic lanceolate crystals of brilliant arsenopyrite, very defined, interpenetrated, with striated faces, ultimately: pure aesthetics. And to give it a touch of excellence we have a group of fluorapatite crystals, brilliant, transparent and with an uniform green tone. A more than worthy representative from this classic Portuguese mine.

Size: 9.4 x 7 x 5.5 cm.
Main crystal: 24 mm.
Found in ±2005.

Classic locality

Former specimen of actinolite adquired in marzo de 1987 at the Sant Celoni mineral show by Sr. Manchion. It shows radial aggregates of green crystals of actinolite, with whitish fluorapatite prisms included in. It comes from a Portuguese quarries abandoned for decades.

Size: 6 x 5 x 2.4 cm.
Main crystal: 10 mm.
Found in ±1987

Col. J. M. Manchion. Num. 305.

This floater specimen shows a curious and aesthetic skeletal growth of arsenopyrite crystals. Oquerous, extremely brilliant, with flattened and striated forms. An exceptional piece for this Portuguese mine that never ceases to amaze us for its top quality specimens. A very different specimen from Panasqueira.

Size: 8 x 4.6 x 3.6 cm.

Classic locality

Specimens of libethenite from Miguel Vacas mine are seen in the market, but with this size of crystal, brilliance, sharpness and color not really many of them can be find, but rather few. You do not need a magnifying glass to enjoy the pseudo-octahedral crystals of this phosphate. It is accompanied by pseudomalachite, as is usual for the locality, and on a quartz matrix. A first quality one, yes!

Size: 7.2 x 4.8 x 4.2 cm.
Main crystal: 1.5 - 2 mm

Classic locality

Group of hyaline quartz crystals, well developed and defined, with some curious crystals of fluorapatite, with a marked geometrical color zoning and inclusions. Theya re accompanied by brilliant pyrite crystals on muscovite and siderite.

Size: 9.5 x 8.5 x 6 cm.
Main crystal: 8 x 8 mm. F-ap
Found in ±1980.

Col. J.M. Manchion, Barcelona.
Fluorescent under long wave UV

Groups of tabular saléeite to metasaléeite crystal aggregates, with a characteristic greenish-yellow color, transparent to translucent, due to the loss of water. The shade is much more greenish than the autunite.

 

Size: 6.0 x 5.4 x 4.6 cm.
Main crystal: 3 x 2 mm.
Found in ca. 1990.

Col. J.M. Manchión (Barcelona). Label Joan Viñals.

This old specimen stands out for the large number of oligoclase crystals, a variety of albite, very well defined and rich in facets. They are accompanied by prismatic crystals of actinolite, with an intense green color. A piece for collectors of Iberian deposits. These quarries were worked until the end of the 60s and the beginning of the 70s of the last century.

Size: 7.2 x 4.0 x 3.7 cm.
Found in 1987.

Col. J.M. Manchion (Barcelona) - No.336 (J. Viñals)

A good sized specimen partially covered by several libethenite crystals, very bright and accompanied by pseudomalachite. Under loupe we can observe pseudo-octahedral crystals, with transparency and intense green color. From a classic Portuguese mine exploted since Roman times.

Size: 8.0 x 6.0 x 4.0 cm.

Groups of autunite tabular crystals with an intense and characteristic yellow color, brilliance, transparent, some of them growing epitaxial on torbernite (metatorbernite). They are disposed covering cavities of a matrix of goethite. An old specimen from a classic Portuguese locality.

Size: 7.3 x 6.8 x 4.5 cm.
Found in 1980's.

Fluorescent under LWUV and SWUV
Presents radioactive activity.

Excellent combo formed by a group of ferberite crystals with parallel growths, with an intense black color and good brightness, peppered by lenticular siderite crystals. They are supported by a hyaline quartz crystal partially covered by muscovite. Note that quartz has a small dent on one of the faces of the terminal rhombohedra, without affecting the aesthetics of the sample. Arsenopyrite has grown on the ferberite. A specimen with a superb aesthetics, from a classic locality like Panasqueira.

Size: 6,0 x 5,5 x 3,5 cm.

Group of very sharp fluorapatite crystals showing defined prism faces and hexagonal dipyramids. Good transparence, color between green to greyish, depending on light. Very aesthetically disposed on a matrix of muscovite hexagonal rosettes, with white dolomite. Also with some cyclic twinned marcasite crystals, very brilliant and defined. Take a look under magnication lens. An excellent specimen from this Portuguese classic mine.

Size: 6,2 x 5,0 x 3,5 cm.
Main crystal: 17 x 15 mm.

Fluorescent under long wave UV