Mineral Specimens - page 5
Portugal - Panasqueira

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Carles Curto Text: Carles Curto (formerly curator of the Geology Museum, Barcelona) & Jordi Fabre
Alfredo Petrov Translation: Alfredo Petrov
Assistance from John S. White (former Smithsonian curator) John S. White


Minas da Panasqueira

 

 

 

There is a great mine that is still active within the Iberian peninsular: the mine of Panasqueira in Portugal. The current low price of Wolfram and the competition from other sources means that commercial operation is tough. But for all this, this classic locality has for over 100 years produced, and keeps on producing, fine specimens. These include exceptional specimens of Apatite-(CaF), Ferberite, Arsenopyrite, Siderite, Quartz and numerous other species such as: Chalcopyrite, Sphalerite, Dolomite, Calcite, Mica, Tourmaline, Fluorite, Topaz and Triplite. It has also produced some very rare minerals including Panasqueiraite and Thadeuite. The great feature of these specimens, apart from their quality, is the fact that they almost always combine quite a few mineral species, so the paragenesis has made this mine famous throughout the world.

I started to visit this locality when I was 14 years old, and I have never stopped visiting it since. So I must have been to visit it well over a 100 times. For many years the sale of mineral specimens from the mine was forbidden, as Wolfram was a strategic mineral. So the moments I passed there acquiring specimens could form the basis of quite an exciting book! Over the years I got to know miners, shift managers, administration staff, engineers and geologists. Some were friendly while others were not, but they were all interested in not only the money they could obtain from 'as pedras' ('the rocks' in Portuguese) but also the beauty of the specimens.

Quite a few years ago, and at the same time as Portugal began to change after its entry into the European Union, things began to become easier. However, unfortunately, obtaining good specimens has one again got more difficult, but this time due to the way the mine is worked and the lower grade seams. All that said, I'm still 'trapped' by the beauty of the minerals and the large number of friends I have developed over all those years.

If you want more general and scientific information on this great mine you can get it by following this link. It leads you to a page where we have reproduced text and photos from one of the few publications produced by the mine itself.

 

 

 

Fluorapatite

Fluorapatite with Muscovite
Fluorapatite with Muscovite.
Fluorapatite with Muscovite  

HM90MF: Tabular Fluorapatite crystal, between transparent and translucent, with good luster and very distinct geometric zoning in different shades of green, from paler to deeper, along with small lamellar crystals of Muscovite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 3 X 2.4 X 1.6 cm = 1.18”


minID: HAQ-3N0



Fluorapatite with Quartz, Chlorite and Calcite
 

NE46AL5: A novelty at the Sainte Marie 2020 Virtual show: Group of elongated pale yellow to violet Fluorapatite crystals with zoning that forms white geometric bands in the terminal areas, on a Quartz crystal, partially covered by Chlorite and small crystals of Calcite. The specimen, completely different from those known so far from Panasqueira, comes from a small vug that produced few pieces.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (02/2020)

Specimen size: 5.2 × 2.6 × 1.5 cm = 2.05” × 1.02” × 0.59”

Main crystal size: 3.6 × 0.7 cm = 1.42” × 0.28”

Zoned fluorescence long & short UV

minID: 83D-TDM



Fluorapatite with Quartz, Chlorite and Calcite.
Fluorapatite with Quartz, Sphalerite, Muscovite and Chlorite
Fluorapatite with Quartz, Sphalerite, Muscovite and Chlorite. Fluorapatite with Quartz, Sphalerite, Muscovite and Chlorite.
 

NJ36AL5: A novelty at the Sainte Marie 2020 Virtual show: Group of elongated pale yellow to violet Fluorapatite crystals with zoning that forms white geometric bands in the terminal areas, on matrix, with Sphalerite, Quartz crystals, leafy aggregates of Muscovite and small coatings of Chlorite. The specimen, completely different from those known so far from Panasqueira, comes from a small vug that produced few pieces.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (02/2020)

Specimen size: 7.6 × 5.2 × 3.4 cm = 2.99” × 2.05” × 1.34”

Main crystal size: 1.6 × 0.5 cm = 0.63” × 0.20”

Zoned fluorescence long & short UV

minID: YFF-FN9



Fluorapatite
 

NB11M7: A group of two violet crystals, with zoned color and a cluster of small crystals on its side. On the back, there is a neat contact. The crystals have small damage on the edges.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 2.2 × 1.8 × 1.2 cm = 0.87” × 0.71” × 0.47”

Main crystal size: 1.3 × 1.2 cm = 0.51” × 0.47”

Minor fluorescence short UV



Fluorapatite.
Fluorapatite with Ferberite, Siderite and Muscovite
Fluorapatite with Ferberite, Siderite and Muscovite. Fluorapatite with Ferberite, Siderite and Muscovite.
 

ND29AG4: Fluorapatite crystals, one of them clearly dominant, very rich in faces, transparent and very bright with very well defined faces and edges and implanted on a single Ferberite crystal partially coated by Siderite and Muscovite. Both the color and the crystallographic shape of the Fluorapatite are different than usual for this mine.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (10/2017)

Specimen size: 3.4 × 3 × 2 cm = 1.34” × 1.18” × 0.79”

Main crystal size: 1.5 × 1.2 cm = 0.59” × 0.47”

Zoned fluorescence long & short UV



Fluorapatite with Ferberite, Siderite and Muscovite
 

NB68AG4: Two Fluorapatite crystals, one of them clearly dominant, transparent and very bright, with very well defined faces and edges and implanted on a single Ferberite crystal partially coated by Siderite and Muscovite. Both the color and the crystallographic shape of the Fluorapatite are different than usual for this mine.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (10/2017)

Specimen size: 5.6 × 2.6 × 2.3 cm = 2.20” × 1.02” × 0.91”

Main crystal size: 1.2 × 0.9 cm = 0.47” × 0.35”

Zoned fluorescence long & short UV



Fluorapatite with Ferberite, Siderite and Muscovite. Front
Front
Fluorapatite with Ferberite, Siderite and Muscovite. Rear
Rear
Fluorapatite with Ferberite, Siderite and Muscovite.
Fluorapatite with Ferberite, Siderite and Muscovite
Fluorapatite with Ferberite, Siderite and Muscovite. Front
Front
Fluorapatite with Ferberite, Siderite and Muscovite. Rear
Rear
Fluorapatite with Ferberite, Siderite and Muscovite.
 

NC97AG4: Fluorapatite crystals, one of them clearly dominant, equant, transparent and very bright, with very well defined faces and edges and implanted on a single doubly terminated Ferberite crystal partially coated by Siderite and Muscovite. Both the color and the crystallographic shape of the Fluorapatite are different than usual for this mine.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (10/2017)

Specimen size: 5.7 × 4.3 × 1.8 cm = 2.24” × 1.69” × 0.71”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”

Zoned fluorescence long & short UV



Fluorapatite with Quartz, Muscovite, Arsenopyrite and Calcite
 

AM66Z8: Thin tabular Fluorapatite crystal, transparent, with very well marked concentric geometric color zoning and implanted on a matrix of Quartz crystals with small Arsenopyrite crystals and Calcite coatings.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1987-2013)

Specimen size: 3.8 × 3.2 × 4.5 cm = 1.50” × 1.26” × 1.77”

Main crystal size: 3.4 × 2.6 cm = 1.34” × 1.02”

Fluorescent long & short UV

Former collection of Alain Martaud



Fluorapatite with Quartz, Muscovite, Arsenopyrite and Calcite.
Fluorapatite with inclusions and Muscovite
Fluorapatite with inclusions and Muscovite. Front
Front
Fluorapatite with inclusions and Muscovite. Rear
Rear
Fluorapatite with inclusions and Muscovite.
 

NC62AD2: Tabular crystal with a well developed very short prism, the pinacoid and a flat pyramid. It is transparent, very bright with a color between green and golden and it’s implanted on a rocky matrix with leafy Muscovite aggregates.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (08/2015)

Specimen size: 3.9 × 3.6 × 3.2 cm = 1.54” × 1.42” × 1.26”

Main crystal size: 1.8 × 1.3 cm = 0.71” × 0.51”

Fluorescent long & short UV



Fluorapatite
 

MK96AE6: A Fluorapatite crystal, unusual due to its very elongated shape. It has very well defined faces and edges, is between transparent and translucent, and has a pale green color with geometric color zones having different green shades that appear as “phantom” growths. It is with small Arsenopyrite crystals on the prism faces.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 4.2 × 2.9 × 1.2 cm = 1.65” × 1.14” × 0.47”

Fluorescence short UV & minor fluorescence long UV



Fluorapatite. Front
Front
Fluorapatite. Rear
Rear
Fluorapatite with Calcite and Pyrite
Fluorapatite with Calcite and Pyrite. Front
Front
Fluorapatite with Calcite and Pyrite. Top
Top
 

MB68AD4: Aggregate, on a Calcite matrix, of two thick tabular crystals, one of them clearly dominant, with a dark green color, translucent, bright and with concentric color zones. Different from the more common Fluorapatite from this mine.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2011)

Specimen size: 5 × 4.2 × 3.7 cm = 1.97” × 1.65” × 1.46”

Main crystal size: 4 × 3.3 cm = 1.57” × 1.30”

Intense fluorescence short UV & fluorescent long UV



Fluorapatite with Quartz, Siderite and Muscovite

Fluorescent light (daylight)
 

TTM27AN6: Group of Fluorapatite crystals with a short prismatic habit, doubly terminated, translucent, lustrous, and green with geometric color zoning. They are implanted on a translucent Quartz crystal coated with rhombohedral Siderite crystals and leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 5.2 × 4.8 × 3.4 cm = 2.05” × 1.89” × 1.34”

Main crystal size: 1.5 × 1 cm = 0.59” × 0.39”

Intense zoned fluorescence long & short UV



Fluorapatite with Quartz, Siderite and Muscovite. Fluorapatite with Quartz, Siderite and Muscovite.
Fluorapatite with Siderite
Fluorapatite with Siderite.
Fluorapatite with Siderite.
Fluorapatite with Siderite  

TC180MP: Floater group of Fluorapatite crystals with very well defined faces and edges, translucent, with good luster and an intense green color, with geometric color zoning and small coatings of lenticular Siderite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 5.9 × 3.8 × 3.3 cm = 2.32” × 1.50” × 1.30”

Main crystal size: 3.6 × 3.5 cm = 1.42” × 1.38”




Fluorapatite with Calcite and Pyrite
 

NG36AJ5: Floater tabular crystal with anomalous growths at the base and without damage. It is transparent and bright, has very well defined geometric growths, is partially coated by Calcite and it is with small Pyrite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 6 × 3.1 × 1.7 cm = 2.36” × 1.22” × 0.67”

Fluorescence short UV & minor fluorescence long UV



Fluorapatite with Calcite and Pyrite. Front
Front
Fluorapatite with Calcite and Pyrite. Rear
Rear
Fluorapatite with Siderite
Fluorapatite with Siderite. Fluorapatite with Siderite.
 

AQ26Z0: Aggregate of short prismatic Fluorapatite crystals. They are translucent, bright, have a pale green color and are coated by Siderite on the back on the sample.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1987-2013)

Specimen size: 6.4 × 2.9 × 2.1 cm = 2.52” × 1.14” × 0.83”

Main crystal size: 2 × 0.9 cm = 0.79” × 0.35”

Former collection of Alain Martaud

Intense fluorescence short UV & fluorescent long UV



Fluorapatite with Arsenopyrite and Muscovite
 

EP92AH7: Single Fluorapatite crystal with a thin tabular shape and with a very well defined concentric color zoning. On a matrix of Arsenopyrite crystals with botryoidal Muscovite aggregates. At Panasqueira this kind of concentric growth, differentiated on the periphery and the central area, is well known as “olho de boi” (ox eye), a particularity that is especially obvious on this sample.
Minas da Panasqueira, level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (12/2012)

Specimen size: 7.4 × 5.5 × 2.6 cm = 2.91” × 2.17” × 1.02”

Main crystal size: 3.4 × 2.3 cm = 1.34” × 0.91”

Fluorescence short UV & minor fluorescence long UV



Fluorapatite with Arsenopyrite and Muscovite. Front
Front
Fluorapatite with Arsenopyrite and Muscovite. Rear
Rear
Fluorapatite with Arsenopyrite and Muscovite.
Fluorapatite with Pyrite and Siderite
Fluorapatite with Pyrite and Siderite. Fluorapatite with Pyrite and Siderite.
 

EV91AM1: Group of Fluorapatite crystals with a thick tabular to short prismatic habit, translucent, with an intense green color with geometric color zoning, on matrix. With lenticular crystals of Siderite and small crystals of Pyrite. The specimen comes from a recent find in Panasqueira.
Minas da Panasqueira, level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (07-08/2020)

Specimen size: 8.7 × 8.2 × 4.9 cm = 3.43” × 3.23” × 1.93”

Main crystal size: 5.6 × 4.2 cm = 2.20” × 1.65”

Fluorescent long & short UV

minID: 7HC-KMT



Fluorapatite with Ferberite, Siderite, Quartz and Muscovite

Fluorescent light (daylight)
Fluorapatite with Ferberite, Siderite, Quartz and Muscovite
 

TF26AF0: A cluster of translucent thick tabular color-zoned Fluorapatite crystals with a lovely pale green color They are on matrix with Muscovite, platy Siderite crystals, Ferberite and Quartz.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 8.8 × 7.4 × 4 cm = 3.46” × 2.91” × 1.57”

Main crystal size: 6.1 × 2.2 cm = 2.40” × 0.87”

Fluorescent long & short UV

Former collection of George Loud



Fluorapatite with Ferberite, Siderite, Quartz and Muscovite. Front
Front
Fluorapatite with Ferberite, Siderite, Quartz and Muscovite. Side
Side
Fluorapatite with Muscovite
Fluorapatite with Muscovite.

Fluorescent light (daylight)
Fluorapatite with Muscovite
 

TC2180NBJ: Fluorapatite crystals with a short prismatic shape, transparent, very lustrous, and pale green in color with geometric zoning, on matrix, with leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±2004)

Specimen size: 9.1 × 7 × 5.3 cm = 3.58” × 2.76” × 2.09”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”




Fluorapatite with Siderite and Muscovite
 

N88GK9: Group of crystals of Fluorapatite, with an attractive pale green color and excellent brilliance, on matrix, with Muscovite and Siderite.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2000)

Specimen size: 13.3 × 7.8 × 5.6 cm = 5.24” × 3.07” × 2.20”

Main crystal size: 1.4 × 0.8 cm = 0.55” × 0.31”

Minor fluorescence long & short UV



Fluorapatite with Siderite and Muscovite.
Fluorapatite with Siderite and Muscovite.
Fluorapatite with Siderite, Muscovite, Marcasite and Arsenopyrite
Fluorapatite with Siderite, Muscovite, Marcasite and Arsenopyrite. Fluorapatite with Siderite, Muscovite, Marcasite and Arsenopyrite.
 

PV91AJ5: Thick tabular Fluorapatite crystals with a very well defined concentric color zoning, a kind of growth that at Panasqueira is well-known as 'olho de boi' (ox eye). The Fluorapatite crystals are on matrix with crystals of Arsenopyrite, pale brown lenticular Siderite, Muscovite and Marcasite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 15.3 × 9.2 × 5.8 cm = 6.02” × 3.62” × 2.28”

Main crystal size: 2.5 × 2 cm = 0.98” × 0.79”

Fluorescence short UV & minor fluorescence long UV



Fluorapatite with Quartz and Siderite
 

NY87AM8: Transparent Quartz crystal partially covered by very elongated prismatic Fluorapatite crystals, many of them doubly terminated, with a light yellow color, and with lenticular crystals of Siderite.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1999)

Specimen size: 19.9 × 5.5 × 5 cm = 7.83” × 2.17” × 1.97”

Minor fluorescence long & short UV



Fluorapatite with Quartz and Siderite. Front
Front
Fluorapatite with Quartz and Siderite. Rear
Rear
Fluorapatite with Quartz and Siderite.

Ferberite

Ferberite with Siderite and Pyrite
Ferberite with Siderite and Pyrite.
Ferberite with Siderite and Pyrite  

HM180VF: Ferberite crystal, on matrix, very aerial, with very well marked parallel polycrystalline growths, lustrous, and partially covered by lenticular crystals of Siderite and small cubic Pyrite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 8.6 × 5.6 × 5.8 cm = 3.39” × 2.20” × 2.28”

Main crystal size: 7.4 × 4.6 cm = 2.91” × 1.81”


minID: V23-851



Ferberite with Calcite-Dolomite and Pyrite
 

TC69AL3: Floater group of Ferberite crystals, elongated, flattened and in parallel growth, with good terminations, lustrous, and partially covered with lenticular Calcite-Dolomite crystals and small Pyrite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 11.2 × 6.3 × 3.6 cm = 4.41” × 2.48” × 1.42”

Main crystal size: 10.5 × 6.1 cm = 4.13” × 2.40”


minID: JMN-HE0



Ferberite with Calcite-Dolomite and Pyrite. Front
Front
Ferberite with Calcite-Dolomite and Pyrite. Side
Side
Ferberite with Calcite-Dolomite and Pyrite. Side
Side
Ferberite with Arsenopyrite, Quartz and Muscovite
Ferberite with Arsenopyrite, Quartz and Muscovite. Front / Photo: Joaquim Callén
Front / Photo: Joaquim Callén
Ferberite with Arsenopyrite, Quartz and Muscovite. Detail / Photo: Joaquim Callén
Detail / Photo: Joaquim Callén
 

EG36AM5: Parallel growth of two very sharp Ferberite crystals on matrix with Arsenopyrite and Quartz crystals and coatings of Muscovite aggregates. Large in size, the piece is more aesthetic than usual due to the contrast of the Ferberite crystals with the Muscovite matrix.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (05/2019)

Specimen size: 19 × 16.4 × 7.8 cm = 7.48” × 6.46” × 3.07”

Main crystal size: 5 × 4.4 cm = 1.97” × 1.73”





Sulfides

Pyrite
 

CK36D3: Colored Pyrite with curved cubes covering a flat Calcite matrix.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 12 × 10 × 1.3 cm = 4.72” × 3.94” × 0.51”

Main crystal size: 1 × 0.9 cm = 0.39” × 0.35”




Pyrite.
Arsenopyrite with Muscovite
Arsenopyrite with Muscovite.
Arsenopyrite with Muscovite  

HM220NX: Group of Arsenopyrite crystals with very well defined crystal forms and good terminations. The matrix is composed of leafy aggregates of lamellar Muscovite crystals.


Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±2005)

Specimen size: 5.5 × 4.3 × 3.8 cm = 2.17” × 1.69” × 1.50”


minID: 9R6-JQG



Arsenopyrite with Muscovite
 

NB37AL3: Iridescent crystals of Arsenopyrite that form a closed aggregate, with parallel curvatures and growths, very lustrous, with small aggregates of lamellar Muscovite crystals.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±2005)

Specimen size: 6.6 × 6.2 × 3.6 cm = 2.60” × 2.44” × 1.42”

Main crystal size: 4.1 × 1.4 cm = 1.61” × 0.55”


minID: L52-3FE



Arsenopyrite with Muscovite. Front
Front
Arsenopyrite with Muscovite. Side
Side
Arsenopyrite with Muscovite.
Arsenopyrite-Marcasite with Ferberite and Muscovite
Arsenopyrite-Marcasite with Ferberite and Muscovite. Arsenopyrite-Marcasite with Ferberite and Muscovite.

Fluorescent light (daylight)
 

ETX67AP0: Parallel epitactic growths of Arsenopyrite-Marcasite crystals with very well defined and sharp crystal forms. Brilliant, with iridescence of various colors and on matrix. With Ferberite crystals, lenticular Siderite crystals and coatings of lamellar Muscovite crystals.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2020)

Specimen size: 5 × 4.8 × 4.3 cm = 1.97” × 1.89” × 1.69”

Main crystal size: 3.8 × 1.5 cm = 1.50” × 0.59”




Sphalerite with Chalcopyrite, Arsenopyrite and Siderite
 

AD66Z0: Sphalerite crystals with very well defined faces and edges, with very well marked growth striations and superficial Chalcopyrite, and with very sharp Arsenopyrite crystals and lenticular Siderite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1987-2013)

Specimen size: 3.7 × 3.2 × 2.8 cm = 1.46” × 1.26” × 1.10”

Main crystal size: 3 × 2.7 cm = 1.18” × 1.06”

Former collection of Alain Martaud



Sphalerite with Chalcopyrite, Arsenopyrite and Siderite. Front
Front
Sphalerite with Chalcopyrite, Arsenopyrite and Siderite. Top
Top

Carbonates

Siderite with Fluorapatite
Siderite with Fluorapatite.
 

MF14AH7: Floater rhombohedral Siderite crystal with apparent foliations that really are recrystallizations. Its honey color and the transparency are not usual for Siderite from this mine, generally it is more opaque. There is an associated growth of uncommon doubly terminated Fluorapatite crystals, between translucent and transparent, bright and white in color. These unexpected Fluorapatite crystals have been analyzed and we will send a copy of the analysis to the buyer.
Minas da Panasqueira, level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (10/2015)

Specimen size: 2.7 × 2.5 × 1.2 cm = 1.06” × 0.98” × 0.47”




Siderite with Ferberite and Quartz
 

MD12AE6: Elegant, platy Siderite crystals with a warm brown color. They are implanted on a twinned Ferberite crystal and are with transparent colorless Quartz.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 3.8 × 3 × 3.1 cm = 1.50” × 1.18” × 1.22”

Main crystal size: 2.8 × 1.1 cm = 1.10” × 0.43”




Siderite with Ferberite and Quartz. Front
Front
Siderite with Ferberite and Quartz. Rear
Rear
Siderite with Ferberite and Quartz. Top
Top
Siderite with Quartz and Arsenopyrite
Siderite with Quartz and Arsenopyrite.
 

NY13AB1: Aggregate of prismatic Siderite crystals with pinacoidal terminations. They have a very uniform dark brown color and silky luster due to microcrystalline surfaces on the prisms. The Siderite is with a small matrix of Quartz and Arsenopyrite and has cubic Pyrite microcrystals on its faces. Unlike most Panasqueira Siderite, this sample lacks the typically dull creamy second generation, which makes it very showy.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (11/2014)

Specimen size: 4.3 × 3.3 × 2 cm = 1.69” × 1.30” × 0.79”

Main crystal size: 2.5 × 2 cm = 0.98” × 0.79”




Siderite with Quartz
 

N14CK9: Barrel-shaped crystals of Siderite on a group of Quartz crystals and small crystals of Arsenopyrite and Pyrite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1997)

Specimen size: 7.2 × 6.4 × 5.2 cm = 2.83” × 2.52” × 2.05”

Main crystal size: 1.6 × 1.2 cm = 0.63” × 0.47”




Siderite with Quartz. Siderite with Quartz.
Siderite with Quartz and Calcite
Siderite with Quartz and Calcite.

Fluorescent light (daylight)
 

TC280NCG: Siderite crystal with a lenticular shape, with bright luster and light brown color, attached to a Quartz crystal and covered by small Calcite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±2004)

Specimen size: 8 × 4.7 × 4.6 cm = 3.15” × 1.85” × 1.81”

Main crystal size: 4.7 × 4.3 cm = 1.85” × 1.69”




Siderite with Pyrite and Quartz

Fluorescent light (daylight)
 

NBE26AN4: Aerial group of Siderite crystals with a lenticular habit, very sharp crystal forms, a silky luster and a light brown color. They are partially covered by small cubic Pyrite crystals and are on a matrix of Quartz crystals.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1998)

Specimen size: 9.6 × 6.4 × 3.2 cm = 3.78” × 2.52” × 1.26”

Main crystal size: 4.2 × 1.4 cm = 1.65” × 0.55”




Siderite with Pyrite and Quartz. Siderite with Pyrite and Quartz.
Siderite
Siderite.
 

AR47Z8: Big lenticular crystal with a clear brown color and very well defined faces and edges that underline its complete contour. It has a well-developed flat pinacoidal surface and very well marked parallel growths on its rhombohedral faces.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1987-2013)

Specimen size: 9.7 × 9.7 × 3 cm = 3.82” × 3.82” × 1.18”

Former collection of Alain Martaud



Siderite with Quartz
 

NW27AM8: Group of transparent Quartz crystals partially covered by tabular Siderite crystals, with a light cream color and high quality.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1999)

Specimen size: 10.5 × 6.8 × 4.6 cm = 4.13” × 2.68” × 1.81”

Main crystal size: 10.5 × 3.4 cm = 4.13” × 1.34”




Siderite with Quartz. Front
Front
Siderite with Quartz. Rear
Rear
Siderite with Quartz
Siderite with Quartz. Front
Front
Siderite with Quartz. Top
Top
 

NC64G8: An encrustation of little crystals of Siderite covers the rhombohedral terminal faces of a Quartz prism. Two of the crystals have a big size enhancing from the group.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)

Specimen size: 11.1 × 6.2 × 5 cm = 4.37” × 2.44” × 1.97”




Siderite with Quartz, Chalcopyrite and Muscovite
 

NC76AB5: Aggregate of lenticular Siderite crystals, one of them clearly dominant, with very well defined faces and edges and on a crystalline Quartz matrix with leafy Muscovite aggregates and a very well defined Chalcopyrite crystal.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)

Specimen size: 11.4 × 5.5 × 3.2 cm = 4.49” × 2.17” × 1.26”

Main crystal size: 5.6 × 4.6 cm = 2.20” × 1.81”




Siderite with Quartz, Chalcopyrite and Muscovite.
Siderite with Quartz and inclusions
Siderite with Quartz and inclusions. Front
Front
Siderite with Quartz and inclusions. Top
Top
 

E12EK9: Flattened rhombohedral Siderite crystal group, covering Quartz and small crystals of Arsenopyrite and Pyrite some of them included on the Quartz.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1997)

Specimen size: 11.8 × 8.6 × 5.5 cm = 4.65” × 3.39” × 2.17”

Main crystal size: 1.7 × 1.6 cm = 0.67” × 0.63”




Siderite with Pyrite, Quartz and Muscovite

Fluorescent light (daylight)
 

TR49AJ5: Great group of Siderite crystals with the predominant forms of the short prism and a flattened rhombohedron. They have a brown color and are partially coated by small Pyrite crystals and are on matrix with crystals of Quartz, leafy Muscovite aggregates, Arsenopyrite and cubic Pyrite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 12.3 × 11.6 × 8.5 cm = 4.84” × 4.57” × 3.35”

Main crystal size: 7 × 4.3 cm = 2.76” × 1.69”




Siderite with Pyrite, Quartz and Muscovite. Front
Front
Siderite with Pyrite, Quartz and Muscovite. Side
Side
Siderite with Pyrite, Quartz and Muscovite.
Siderite with Quartz with Ferberite inclusions
Siderite with Quartz with Ferberite inclusions. Front
Front
Siderite with Quartz with Ferberite inclusions. Rear
Rear

Fluorescent light (daylight)
 

EXB67AP1: Very aerial group of lenticular Siderite crystals of considerable size, one of them clearly dominant and very aerial, light cream in color and implanted on a crystal of Quartz with inclusions of small Ferberite crystals.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2021)

Specimen size: 12.7 × 7.4 × 5.4 cm = 5.00” × 2.91” × 2.13”

Main crystal size: 7.4 × 6.1 cm = 2.91” × 2.40”




Siderite with Fluorapatite and Mica
 

NR16AM8: Two generations of Siderite crystals, a first with large, tabular crystals, and a second generation of small, lenticular crystals, with a color between brown and cream, with small tabular Fluorapatite crystals and groups of lamellar Muscovite crystals.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2000)

Specimen size: 12.8 × 8.3 × 4.7 cm = 5.04” × 3.27” × 1.85”

Main crystal size: 5 × 4.8 cm = 1.97” × 1.89”




Siderite with Fluorapatite and Mica. Siderite with Fluorapatite and Mica.
Siderite on Quartz with Pyrite
Siderite on Quartz with Pyrite. Siderite on Quartz with Pyrite.
Siderite on Quartz with Pyrite.

Fluorescent light (daylight)
 

NE94AM8: Large quartz crystal partially covered by groups of rhombohedral Siderite crystals with polycrystalline growths, with a light cream color and small Pyrite crystals. Monumental.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2000)

Specimen size: 23.7 × 12.4 × 8.1 cm = 9.33” × 4.88” × 3.19”





Quartz

Quartz with Siderite and Dolomite
Quartz with Siderite and Dolomite  

HM80NG: Parallel growth of Quartz crystals on matrix, transparent, lustrous, very rich in inclusions and with lenticular Siderite and Dolomite crystals in which rhombohedral forms dominate.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1997)

Specimen size: 6.8 × 5.7 × 3.7 cm = 2.68” × 2.24” × 1.46”

Main crystal size: 5.5 × 3.5 cm = 2.17” × 1.38”


minID: DQX-PUA



Quartz with Siderite and Dolomite.
Quartz with Fluorapatite inclusions and with Muscovite, Siderite and Calcite
Quartz with Fluorapatite inclusions and with Muscovite, Siderite and Calcite. Quartz with Fluorapatite inclusions and with Muscovite, Siderite and Calcite.
 

EF92AA2: Thin laminar Fluorapatite crystal included in a Quartz crystal partially coated by Siderite and Muscovite. Visible crystalline inclusions of Fluorapatite are very rare. In this the sample, approximately half of a crystal can be seen and it has concentric geometrical color zones with a dominant yellowish-green color.
Minas da Panasqueira, level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (05/2014)

Specimen size: 9.5 × 5.1 × 3.8 cm = 3.74” × 2.01” × 1.50”

Main crystal size: 2.4 × 1.1 cm = 0.94” × 0.43”

Fluorescence short UV & minor fluorescence long UV



Quartz with Arsenopyrite, Marcasite, Siderite, Calcite and Muscovite
 

NK96AJ5: Single Quartz crystal with a very aerial growth of Marcasite-Arsenopyrite, leafy Muscovite growths, and crystals of small lenticular Siderite and white Calcite.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2004)

Specimen size: 10.1 × 8.8 × 3.9 cm = 3.98” × 3.46” × 1.54”

Main crystal size: 9.1 × 6.3 cm = 3.58” × 2.48”




Quartz with Arsenopyrite, Marcasite, Siderite, Calcite and Muscovite. Quartz with Arsenopyrite, Marcasite, Siderite, Calcite and Muscovite.
Quartz with inclusions, Sphalerite and Siderite
Quartz with inclusions, Sphalerite and Siderite. Quartz with inclusions, Sphalerite and Siderite.
 

N17PQZ4: Group of Quartz crystals, some of them forming parallel growths, with inclusions and partially coated by lenticular Siderite crystals and small tetrahedral Sphalerite crystals.
Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1994)

Specimen size: 13.4 × 7.8 × 6.2 cm = 5.28” × 3.07” × 2.44”

Main crystal size: 11.5 × 2.8 cm = 4.53” × 1.10”




Quartz with Siderite, Pyrite, Ferberite and Fluorapatite
 

NH57AD6: Floater aggregate of two Quartz crystals with the most typical forms on the front side and polycrystalline growths on the back. They are partially coated by Siderite, Pyrite and Fluorapatite and have some small inclusions of very well defined Arsenopyrite.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1999)

Specimen size: 22 × 11 × 5.5 cm = 8.66” × 4.33” × 2.17”

Main crystal size: 17.8 × 5.5 cm = 7.01” × 2.17”

Fluorapatite fluorescent short UV



Quartz with Siderite, Pyrite, Ferberite and Fluorapatite. Quartz with Siderite, Pyrite, Ferberite and Fluorapatite.

Fluorite

Fluorite with Quartz, Muscovite and Chlorite
Fluorite with Quartz, Muscovite and Chlorite.
Fluorite with Quartz, Muscovite and Chlorite  

TC90NM: Cubo-octahedral Fluorite crystals with a color between blue and lilac that cover the lower part of a water-clear Quartz crystal partially covered by Chlorite, with small aggregates of Muscovite. From the upper levels of Panasqueira, surprising and pleasant news continues to appear, with specimens that are different from those known before.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (04/2017)

Specimen size: 4.1 × 1.8 × 1.5 cm = 1.61” × 0.71” × 0.59”




Fluorite with Siderite and Quartz
Fluorite with Siderite and Quartz  

SM80NEH: Cubic crystals of Fluorite beveled by the rhombohedron, with rough faces due to polycrystalline growths and with purple phantoms. Transparent, blue with violet tones, on matrix with Quartz crystals and small tabular Siderite crystals with geometric color zoning.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (08/2015)

Specimen size: 4.6 × 3.5 × 2.1 cm = 1.81” × 1.38” × 0.83”

Main crystal size: 1.3 × 1.3 cm = 0.51” × 0.51”




Fluorite with Siderite and Quartz.
Fluorite with Fluorapatite, Arsenopyrite and Muscovite
Fluorite with Fluorapatite, Arsenopyrite and Muscovite.

Fluorescent light (daylight)
Fluorite with Fluorapatite, Arsenopyrite and Muscovite
 

TC2170NKL: Group of translucent, lustrous green Fluorapatite crystals, with small Arsenopyrite crystals, lamellar Muscovite crystals and partially covered by spheroidal aggregates of Fluorite with a color between blue and lilac.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (11/2014)

Specimen size: 5 × 4 × 2.8 cm = 1.97” × 1.57” × 1.10”

Main crystal size: 2.9 × 1.6 cm = 1.14” × 0.63”




Fluorite on Topaz with Quartz and Arsenopyrite
 

NE48AF3: Group of very flattened Fluorite crystals with the very well defined forms of the cube and dodecahedron. The Fluorite, with a lilac-blue color, has grown partially following the forms of the Quartz, Topaz and Arsenopyrite crystals where it is covering them. The upper levels of Panasqueira are currently offering surprising and pleasant novelties, with samples that are very different from what has been known from this mine.
The Fluorite and the Topaz have been analyzed and we’ll send a copy of both analysis to the buyer.
Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (04/2017)

Specimen size: 5 × 5 × 2.6 cm = 1.97” × 1.97” × 1.02”




Fluorite on Topaz with Quartz and Arsenopyrite. Front
Front
Fluorite on Topaz with Quartz and Arsenopyrite. Rear
Rear
Fluorite with Quartz, Chlorite and Muscovite
Fluorite with Quartz, Chlorite and Muscovite. Fluorite with Quartz, Chlorite and Muscovite.
 

MT26AB1: Aggregate of cubic Fluorite crystals beveled by the dodecahedron. They are colorless, with rough faces due to micro-crystalline growths, and have violet phantoms. They are on matrix, with Quartz crystals, Chlorite coatings and small Muscovite aggregates. The upper levels of Panasqueira are currently offering surprising and pleasant novelties, with samples that are very different from what has been known from this mine.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (06/2014)

Specimen size: 3.8 × 3 × 2.6 cm = 1.50” × 1.18” × 1.02”

Main crystal size: 1.3 × 1.3 cm = 0.51” × 0.51”




Fluorite with Quartz and Siderite
 

NT37AB8: Fluorite crystal formed by the well balanced cube and dodecahedron faces. Its exterior is pale blue and it has a deep violet octahedral center and white inclusions. The crystal is implanted on a Quartz crystal with laminar Siderite and small Muscovite crystals. The upper levels of Panasqueira are currently offering surprising and pleasant novelties, with samples that are very different from what has been known from this mine.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (01/2015)

Specimen size: 6.4 × 2.5 × 3.5 cm = 2.52” × 0.98” × 1.38”

Main crystal size: 2.3 × 2 cm = 0.91” × 0.79”

Minor fluorescence short UV



Fluorite with Quartz and Siderite. Front
Front
Fluorite with Quartz and Siderite. Side
Side
Fluorite with Quartz, Siderite and Chlorite
Fluorite with Quartz, Siderite and Chlorite. Fluorite with Quartz, Siderite and Chlorite.
 

NC56AD6: Translucent and colorless dodecahedral Fluorite crystals formed by growths of multiple small Fluorite crystals, with very well defined faces and edges. These unusual crystals have grown on a Quartz crystal partially coated by Chlorite and white Siderite crystals and Pyrite microcrystals. We’ll send a copy of the analysis to the buyer of this sample.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (07/2014)

Specimen size: 10.7 × 3.9 × 4.4 cm = 4.21” × 1.54” × 1.73”

Main crystal size: 1.1 × 1.1 cm = 0.43” × 0.43”

Minor fluorescence short UV



Fluorite with Fluorapatite and Muscovite
 

NA7AA7: Small spheroidal aggregates of cubo-octahedral Fluorite crystals with a color between blue and lilac. They are partially coating the faces of a group of translucent Fluorapatite crystals with a yellowish-green color. The upper levels of Panasqueira are currently offering surprising and pleasant novelties, with samples that are very different from what is already known.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (11/2014)

Specimen size: 3.4 × 3.2 × 1.3 cm = 1.34” × 1.26” × 0.51”

Main crystal size: 2.1 × 1.7 cm = 0.83” × 0.67”

Fluorite low fluorescence and Fluorapatite very fluorescent (in zones) under short wave UV and low fluorescence under long wave UV



Fluorite with Fluorapatite and Muscovite. Fluorite with Fluorapatite and Muscovite.
Octahedral Fluorite with Cassiterite
Octahedral Fluorite with Cassiterite. Front
Front
Octahedral Fluorite with Cassiterite. Rear
Rear
 

AF98Z8: Octahedral crystal, a very rare crystalline form for Fluorite from Panasqueira. It is translucent, with a bluish-green color and white areas on the vertices. There is also a small and very bright group of cyclic Cassiterite twins on the underside of the crystal.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (1987-2013)

Specimen size: 4 × 3.9 × 2.9 cm = 1.57” × 1.54” × 1.14”

Former collection of Alain Martaud

Minor fluorescence long & short UV




Topaz

Topaz with Arsenopyrite, Fluorite, Muscovite and Chlorite
 

NB27AF2: Topaz crystals with very well defined faces and edges, between transparent and translucent, with very well defined faces and edges, a slightly bluish color and with very sharp and bright Arsenopyrite crystals, small Fluorite crystals, leafy Muscovite aggregates and partially coated by Chlorite. The upper levels of Panasqueira are currently offering surprising and pleasant novelties, with samples that are very different from what has been known from this mine.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2015)

Specimen size: 6.1 × 4.6 × 2 cm = 2.40” × 1.81” × 0.79”

Main crystal size: 1.6 × 1.4 cm = 0.63” × 0.55”

Fluorescent short UV



Topaz with Arsenopyrite, Fluorite, Muscovite and Chlorite. Topaz with Arsenopyrite, Fluorite, Muscovite and Chlorite.
Topaz with Arsenopyrite, Muscovite and Quartz
Topaz with Arsenopyrite, Muscovite and Quartz.
 

NB76AB6: Flattened Topaz crystals, one of them clearly dominant. They are white, between translucent and transparent, and they are on a Quartz and Arsenopyrite matrix partially coated by Chlorite, with small Muscovite aggregates. The upper levels of Panasqueira are currently offering surprising and pleasant novelties, with samples that are very different from what has been known from this mine.
Minas da Panasqueira, level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (03/2015)

Specimen size: 7.1 × 6.1 × 3.8 cm = 2.80” × 2.40” × 1.50”

Main crystal size: 1.5 × 1.1 cm = 0.59” × 0.43”

Fluorescent short UV




Galena

Galena with Pyrite and Calcite
 

TE66AB7: Aggregate of bright cubo-octahedral Galena crystals unusually well developed that have a large size for the locality. They are with small Calcite crystals and are on matrix, with Chalcopyrite. Galena is a very rare species at Panasqueira, especially forming such well defined crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal

Specimen size: 3.5 × 2.7 × 2.7 cm = 1.38” × 1.06” × 1.06”

Main crystal size: 1.1 × 0.8 cm = 0.43” × 0.31”




Galena with Pyrite and Calcite. Front
Front
Galena with Pyrite and Calcite. Top
Top
Galena with Pyrite and Calcite.

Stannite

Arsenopyrite with Stannite, Calcite and Pyrite
Arsenopyrite with Stannite, Calcite and Pyrite. Arsenopyrite with Stannite, Calcite and Pyrite.
 

NH16X9: Parallel polycrystalline Arsenopyrite growths with dark gray Stannite intergrowths and leafy Muscovite aggregates, partially coated by small white Calcite crystals and aggregates of cubic Pyrite crystals. We’ll send a copy of the analysis of the Arsenopyrite to the buyer.
Minas da Panasqueira, level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (2001)

Specimen size: 6.7 × 5.4 × 4.1 cm = 2.64” × 2.13” × 1.61”





PORTUGAL

Preguiça Mine

Descloizite is a mineral not well known in good quality specimens from the European continent. Even considering that the Preguiça Mine, in Portugal, was known for years for its Descloizite and a wide variety of zinc minerals, the quality of the samples was not especially high because the crystals were too small or not esthetic.
Between 2005 and 2006 groups of collectors from Huelva (Spain) were intensely working that mine and finally found some pockets with specimens of Descloizite of high quality, some of them particularly esthetic (and scarce) stalactitic or columnar and associated with white Calcite.
In our opinion these specimens can be considered as the best Descloizites found in Europe.

Just to be certain, we analyzed them and the analysis proved that they are definitely Descloizite. To be more exact, slightly copper rich Descloizite, but the mineral species is Descloizite. We will send a copy of this analysis to our customers who buy this material.

Descloizite with Calcite
 

NF26J1: Group of extraordinarily defined and bright small crystals. These crystals are dipyramidal, of very well defined faces and edges and many of them doubly terminated. In this case Descloizite is the base of a group of scalenohedral crystals of white Calcite.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 6.7 × 5.9 × 3.7 cm = 2.64” × 2.32” × 1.46”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”




Descloizite with Calcite. Front
Front
Descloizite with Calcite. Side
Side
Descloizite with Calcite
Descloizite with Calcite. Descloizite with Calcite.
 

ND26T4: Columnar growths of small dipyramidal crystals of Descloizite, partially coated by white crystals of Calcite and on a matrix of limonite.
The specimen has been published in the Chinese magazine ‘Mineral Lover’ on page 6 in the volume 9/2011
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 7 × 5.7 × 3.8 cm = 2.76” × 2.24” × 1.50”




Descloizite with Calcite
 

NR56T4: Aggregate of dipyramidal crystals of Descloizite with very well defined faces and edges and very bright, with crystals of Calcite, between colorless and white, on limonite matrix.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 7.3 × 5.1 × 4.1 cm = 2.87” × 2.01” × 1.61”




Descloizite with Calcite. Descloizite with Calcite.
Descloizite with Calcite
Descloizite with Calcite. Descloizite with Calcite.
 

NZ63V8: Very aerial and esthetic columnar growths of small but extraordinarily defined and bright crystals. Those are dipyramidal and have very well defined faces and edges and most of them are doubly terminated. The matrix is a group of crystals of white Calcite.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 7.7 × 3.8 × 2.7 cm = 3.03” × 1.50” × 1.06”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”




Descloizite with Calcite
 

NY66M9: Group, on Limonite matrix, of small crystals, very bright and most of them doubly terminated and forming dipyramids of very well defined faces and edges. The group is partially covered by a "nest" of white crystals of
Calcite.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 7.8 × 7.6 × 4.9 cm = 3.07” × 2.99” × 1.93”




Descloizite with Calcite.
Descloizite with Calcite.
Descloizite with Calcite
Descloizite with Calcite. Front
Front
Descloizite with Calcite. Rear
Rear
Descloizite with Calcite.
 

NK86T4: Columnar growths of small dipyramidal crystals of Descloizite with very well defined faces and edges and very bright. On stalagmitic botryoidal growths of Calcite and crystals of the same mineral, clear and very bright.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 10.9 × 4.3 × 3.4 cm = 4.29” × 1.69” × 1.34”

Calcite minor fluorescence long & short UV



Descloizite with Calcite
 

NR47I7: Group on Limonite matrix of small very bright crystals, most of them doubly terminated, forming dipyramids with very well-defined faces and edges. The specimen is very esthetic because of its attractive crests and vugs. A wide surface of the sample is covered by a layer of acute scalenohedron of white Calcite.
Preguiça Mine, Sobral da Adiça, Moura, Beja District, Baixo Alentejo, Alentejo  Portugal (2005-2006)

Specimen size: 14 × 11.8 × 6.2 cm = 5.51” × 4.65” × 2.44”

Main crystal size: 0.1 × 0.1 cm = 0.04” × 0.04”




Descloizite with Calcite.
Descloizite with Calcite.


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