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Reference Specimens
Portugal - Panasqueira

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This page gathers together the specimens that, because of their quality, rarity or interesting locality,
we wish to maintain on our web site as reference specimens although they have been sold.


PANASQUEIRA MINE


 

 

 

 

 

 

Panasqueira mine

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 Quartz and Siderite
Fluorapatite with Quartz and Siderite. Front
Front
Fluorapatite with Quartz and Siderite. Side
Side

AJ27Y6: Aggregate of Fluorapatite crystals on Quartz and with a group of Siderite crystals. The crystals of Fluorapatite, between short prismatic and thick tabular, are very bright and transparent and show a very well-marked geometrical color zoning, blue in the central area and almost colorless on the terminations. The sample has been photographed for a long article in Mineral Up magazine devoted to the mineralogy of Portugal, although we cannot assure that the image will be definitely published.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 3.6 × 1.9 × 1.9 cm = 1.4” × 0.7” × 0.7”

Main crystal size: 0.9 × 0.6 cm = 0.4” × 0.2”

Former collection of Alain Martaud

Zoned fluorescence long & short UV


 
Fluorapatite with Quartz and Muscovite

AH37Y6: Two Fluorapatite crystals with Quartz on Muscovite matrix. The crystals of Fluorapatite, between short prismatic and thick tabular, show a very well-marked geometrical color zoning, deep violet on the central area and clear blue terminations.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 3 × 2.9 × 2.5 cm = 1.2” × 1.1” × 1.0”

Main crystal size: 1.8 × 1.4 cm = 0.7” × 0.6”

Former collection of Alain Martaud

Zoned fluorescence long & short UV


Fluorapatite with Quartz and Muscovite. Front
Front
Fluorapatite with Quartz and Muscovite. Side
Side
 
Fluorapatite
Fluorapatite. Front
Front
Fluorapatite. Top
Top

TM76H4: The crystal has a very special and very rare habit. It is extraordinarily flat, and it has a tabular appearance. It is also partially doubly terminated because its lower termination is only interrupted by the small group of crystals at left.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 3.3 × 2.5 × 1.4 cm = 1.3” × 1.0” × 0.6”

Intense fluorescence long & short UV


 
Fluorapatite on Ferberite

NC36: Delicate rosette of Fluorapatite perched on a brilliant Ferberite crystal partially covered by Siderite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2002)

Specimen size: 6 × 3.5 × 2 cm = 2.4” × 1.4” × 0.8”

Main crystal size: 1.7 × 1.3 cm = 0.7” × 0.5”

Minor fluorescence long & short UV


Fluorapatite on Ferberite. Front
Front
Fluorapatite on Ferberite. Side
Side
 
Fluorapatite
Fluorapatite. Front
Front
Fluorapatite. Side
Side

TD86H9: The crystal is short and has well-defined faces and edges. Looking like doubly terminated, although is incomplete (rehealed) on its back side and in the lower zone.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 6.2 × 5.5 × 4.3 cm = 2.4” × 2.2” × 1.7”

Fluorescence short UV & minor fluorescence long UV


 
Quartz, Ferberite, Fluorapatite, Muscovita, Sphalerite, Siderite, Arsenopyrite and Pyrite

AC100Y8: Very transparent and bright Quartz crystals, some of them coated by a second generation of Quartz microcrystals, with very rich included areas and with a bright Ferberite crystal, leafy Muscovite and small Sphalerite, Arsenopyrite, Pyrite, Siderite and clear green Fluorapatite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 7.7 × 7.3 × 2.6 cm = 3.0” × 2.9” × 1.0”

Main crystal size: 5.6 × 1.3 cm = 2.2” × 0.5”

Former collection of Alain Martaud

Fluorapatite fluorescent long & short UV


Quartz, Ferberite, Fluorapatite, Muscovita, Sphalerite, Siderite, Arsenopyrite and Pyrite. Front
Front
Quartz, Ferberite, Fluorapatite, Muscovita, Sphalerite, Siderite, Arsenopyrite and Pyrite. Rear
Rear
Quartz, Ferberite, Fluorapatite, Muscovita, Sphalerite, Siderite, Arsenopyrite and Pyrite.
 
Fluorapatite with Sphalerite, Muscovite, Calcite, Siderite and Pyrite
Fluorapatite with Sphalerite, Muscovite, Calcite, Siderite and Pyrite. Front
Front
Fluorapatite with Sphalerite, Muscovite, Calcite, Siderite and Pyrite. Side
Side
Fluorapatite with Sphalerite, Muscovite, Calcite, Siderite and Pyrite.

AC99Y6: Partially doubly terminated Fluorapatite crystal, very bright and with an intense green color. It is on two polycrystalline growths of Sphalerite, with laminar Siderite crystals, leafy aggregates of Muscovite and small Calcite and Pyrite crystals. The sample has been photographed for a long article in Mineral Up magazine devoted to the mineralogy of Portugal, although we cannot ensure that the image will be definitely published.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 8 × 5.4 × 2.9 cm = 3.1” × 2.1” × 1.1”

Main crystal size: 2.5 × 2 cm = 1.0” × 0.8”

Former collection of Alain Martaud

Very fluorescent long & short UV


 
Fluorapatite with Siderite, Arsenopyrite, Pyrite, Ferberite, Schorl-Dravite and Muscovite

TP93T3: Group of short crystals of Fluorapatite, one of them clearly dominant, with unusually and extraordinarily bright terminal faces, a clear concentric color zoning and showing Ferberite inclusions. It is on matrix, with Arsenopyrite, Siderite, Ferberite and Schorl-Dravite. A great classic from a classic mine.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (±1990)

Specimen size: 9 × 8.9 × 6.6 cm = 3.5” × 3.5” × 2.6”

Main crystal size: 2.3 × 2.3 cm = 0.9” × 0.9”

Intense fluorescence short UV & fluorescent long UV


Fluorapatite with Siderite, Arsenopyrite, Pyrite, Ferberite, Schorl-Dravite and Muscovite. Fluorapatite with Siderite, Arsenopyrite, Pyrite, Ferberite, Schorl-Dravite and Muscovite.
 
Quartz with Fluorapatite and Chlorite
Quartz with Fluorapatite and Chlorite. Front
Front
Quartz with Fluorapatite and Chlorite. Side
Side
Quartz with Fluorapatite and Chlorite. Quartz with Fluorapatite and Chlorite.

AB91Y8: Group of bright and extraordinarily transparent Quartz crystals with Fluorapatite crystals showing a curious double growth, with smooth surfaces on the terminal pinacoid and with fibrous parallel aggregates on the prismatic faces.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 9.2 × 6.2 × 4.6 cm = 3.6” × 2.4” × 1.8”

Main crystal size: 2.2 × 1.3 cm = 0.9” × 0.5”

Former collection of Alain Martaud

Fluorapatite zoned fluorescence long & short UV


 
Fluorapatite with Schorl-Dravite

JC94F0: A great classic. Flat crystals, perfect, excellent color and brilliance, and on a base of fine needle like crystals of Schorl-Dravite. We have analyzed these crystals and they show a composition that is somewhere between Schorl and Dravite. We will give the purchaser a copy of the analysis.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1998)

Specimen size: 11 × 7.3 × 2.5 cm = 4.3” × 2.9” × 1.0”

Main crystal size: 1.5 × 1 cm = 0.6” × 0.4”

Extremely fluorescent long & short UV


Fluorapatite with Schorl-Dravite.
Fluorapatite with Schorl-Dravite.
 
Fluorapatite with Siderite and Mica
Fluorapatite with Siderite and Mica. Front
Front
Fluorapatite with Siderite and Mica. Fluorapatite with Siderite and Mica. Top
Top

NE43E7: Look out for this one: it is marvelous. The prismatic Fluorapatite crystals are large, aerial and have a great color that is somewhere between blue and green. That said please note that, as you can see in the detailed photo, there is a significant contact on one of the upper faces of crystals. This is where there used to be some Siderite (I know this as I removed it). When you display this specimen the contact is not visible, but you see it when you hold it in your hands. So the importance you give to this contact will affect your wish to have this one in your collection. For me, given the beauty and quality, the fact that there is a contact (this is not damage) due to the former Siderite is acceptable, especially given that it is very difficult to find such specimens at a reasonable price.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2001)

Specimen size: 11 × 7.5 × 5.2 cm = 4.3” × 3.0” × 2.0”

Main crystal size: 2.7 × 2 cm = 1.1” × 0.8”

Extremely fluorescent long & short UV


 
Quartz with Fluorapatite, Muscovite and Ferberite

AB50Y8: Doubly terminated short prismatic Fluorapatite crystals implanted on a transparent and bright Quartz crystal with small leafy Muscovite aggregates and a Ferberite crystal at the base.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 13 × 4.3 × 3.4 cm = 5.1” × 1.7” × 1.3”

Main crystal size: 1.2 × 1.1 cm = 0.5” × 0.4”

Former collection of Alain Martaud

Fluorapatite fluorescent long & short UV


Quartz with Fluorapatite, Muscovite and Ferberite. Front
Front
Quartz with Fluorapatite, Muscovite and Ferberite. Side
Side
Quartz with Fluorapatite, Muscovite and Ferberite.
 
Fluorapatite with Mica, Siderite and Chalcopyrite
Fluorapatite with Mica, Siderite and Chalcopyrite. Front
Front
Fluorapatite with Mica, Siderite and Chalcopyrite. Top
Top

NM40E2: A perfect, floater Fluorapatite, with the base of the crystal healed. It is a nice intense blue-violet color, which is very sought after and difficult to find. On the rear edges of the crystal you can see areas of re-crystallization on which small amounts of Mica, Siderite and Chalcopyrite have formed. A really great specimen.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (±1988)

Specimen size: 4.8 × 2.6 × 2.9 cm = 1.9” × 1.0” × 1.1”


 
Fluorapatite

NC16G4: Crystals, small, are very defined but both the type of the aggregate and its color are very uncommon. The specimen is very different from the usual of Panasqueira.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 7.4 × 4.6 × 5.2 cm = 2.9” × 1.8” × 2.0”

Very fluorescent long & short UV


Fluorapatite.
Fluorapatite.
 


Ferberite

Fluorapatite with Ferberite, Quartz and Muscovite
Fluorapatite with Ferberite, Quartz and Muscovite.

AG27Y6: Short prismatic Fluorapatite crystals partially doubly terminated, with very well defined faces and edges, transparent, with clear green color and implanted on a group of sharp and bright Ferberite crystals with Quartz and partially coated by small Siderite crystals on the back. The sample has been photographed for a long article in Mineral Up magazine devoted to the mineralogy of Portugal, although we cannot assure that the image will be definitely published.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 4.3 × 3.1 × 2 cm = 1.7” × 1.2” × 0.8”

Main crystal size: 0.9 × 0.7 cm = 0.4” × 0.3”

Former collection of Alain Martaud

Fluorescent long & short UV


 
Ferberite with Calcite-Dolomite, Muscovite and Pyrite

AB48Y8: Parallel polycrystalline Ferberite growth with a sharp shape and very well defined terminal faces. The Ferberite crystals are with leafy Muscovite and small Pyrite crystals. The back side of the sample is completely coated by rhombohedral Dolomite crystals partially coated by white lenticular Calcite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 6 × 5.6 × 4 cm = 2.4” × 2.2” × 1.6”

Former collection of Alain Martaud


Ferberite with Calcite-Dolomite, Muscovite and Pyrite. Front
Front
Ferberite with Calcite-Dolomite, Muscovite and Pyrite. Top
Top
 
Ferberite with Quartz, Arsenopyrite and Muscovite
Ferberite with Quartz, Arsenopyrite and Muscovite. Front
Front
Ferberite with Quartz, Arsenopyrite and Muscovite. Side
Side
Ferberite with Quartz, Arsenopyrite and Muscovite. Rear
Rear

AA30Y8: Thick Ferberite crystals with very well defined faces and edges. They are very bright, have very well defined parallel growths and are on a matrix of Quartz crystals, with Arsenopyrite crystals and partially coated by Muscovite.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 7.3 × 5.4 × 5.7 cm = 2.9” × 2.1” × 2.2”

Former collection of Alain Martaud


 
Doubly terminated Ferberite with doubly terminated Quartz

ND30F3: Crystals of doubly terminated Ferberite are not common from Panasqueira, especially with this one's size and definition. In this case we can add that it is neatly and esthetically placed on a complex crystal of doubly terminated Quartz, which has a coating of Siderite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 11.7 × 6.5 × 4 cm = 4.6” × 2.6” × 1.6”

Main crystal size: 6.5 × 5 cm = 2.6” × 2.0”


Doubly terminated Ferberite with doubly terminated Quartz. Front
Front
Doubly terminated Ferberite with doubly terminated Quartz. Side
Side
Doubly terminated Ferberite with doubly terminated Quartz. Bottom
Bottom
 
Ferberite with Siderite and Fluorapatite
Ferberite with Siderite and Fluorapatite.
Ferberite with Siderite and Fluorapatite.

NF36K9: Excellent group of Ferberite crystals, some of them doubly terminated, partially covered by small Siderite crystals and tabular Fluorapatite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2001)

Specimen size: 11.8 × 6.6 × 5 cm = 4.6” × 2.6” × 2.0”

Main crystal size: 4.5 × 3.8 cm = 1.8” × 1.5”

Fluorapatite with zoned fluorescence long & short UV


 
Ferberite

HF27P8: Group of crystals of good size, thick, with unusual very acute terminations of velvety luster and very bright, not cleaved, lateral faces with subtle polycrystalline growths. The sample is with a numbered collection label without a name reference.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 12.7 × 5.9 × 3.8 cm = 5.0” × 2.3” × 1.5”


Ferberite. Front
Front
Ferberite. Side
Side
 


Sulfides

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

NE14M9: Very aerial growth of doubly terminated crystals of Arsenopyrite that are partially coated by lenticular crystals of Siderite and by Muscovite, all this growth is at the apex of a Quartz crystal.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 6.4 × 5.9 × 3.6 cm = 2.5” × 2.3” × 1.4”


 
Arsenopyrite with Siderite and Pyrite

TF56H4: The group, very aerial, is a floater group of prismatic crystals of Arsenopyrite, most of them doubly terminated and forming a kind of wall with small crystallized nucleus of Pyrite and Siderite.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 7.1 × 3.5 × 2.8 cm = 2.8” × 1.4” × 1.1”

Main crystal size: 1.4 × 1 cm = 0.6” × 0.4”


Arsenopyrite with Siderite and Pyrite.
 
Arsenopyrite with Siderite and Muscovite
Arsenopyrite with Siderite and Muscovite. Front
Front
Arsenopyrite with Siderite and Muscovite. Top
Top

TY76H9: Parallel growth of elongated crystals with small crystals of Siderite and Muscovite. The parallel growth is evident on the terminal faces.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 7.3 × 4 × 4.4 cm = 2.9” × 1.6” × 1.7”


 
Arsenopyrite with Muscovite and Pyrite

NB47G4: Extraordinary group both for crystal size, very bright and sharply defined, and for its contrast with a crystallized Muscovite matrix. Between Arsenopyrite crystals appears, very centered, a little cube of Pyrite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 10.8 × 7.8 × 4.9 cm = 4.3” × 3.1” × 1.9”


Arsenopyrite with Muscovite and Pyrite. Arsenopyrite with Muscovite and Pyrite.
 
Epitactic Arsenopyrite-Marcasite with Pyrite
Epitactic Arsenopyrite-Marcasite with Pyrite. Epitactic Arsenopyrite-Marcasite with Pyrite.

RF96N4: Multiple parallel growths of Arsenopyrite and Marcasite of very sharp and well defined forms, epigenetic on Pyrite.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (±1982)

Specimen size: 7.8 × 6.9 × 5.2 cm = 3.1” × 2.7” × 2.0”

Main crystal size: 1.8 × 1.8 cm = 0.7” × 0.7”


 
Epitactic Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite

TP88P3: Epitactic growths of very well defined crystals of Marcasite, with excellent luster, on prismatic crystals of Arsenopyrite and with thin coatings of small crystals of Siderite in some areas.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 13 × 8.2 × 6.2 cm = 5.1” × 3.2” × 2.4”


Epitactic Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite. Front
Front
Epitactic Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite.
Epitactic Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite. Side
Side
 
Pyrite
Pyrite.

NM10F2: The cubic crystals of Pyrite are piled on top of each other on a single axis, forming very interesting and attractive features. Very different from other ones from this mine.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 6.5 × 4.5 × 2.5 cm = 2.6” × 1.8” × 1.0”


 
Fluorapatite with Pyrite and Siderite

AG27Z0: Aggregate of short prismatic Fluorapatite crystals with very well marked color zoning, partially coated by very bright small, very elongated, Pyrite crystals and with Siderite on the back.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 6.5 × 4.6 × 3.2 cm = 2.6” × 1.8” × 1.3”

Main crystal size: 2 × 1.3 cm = 0.8” × 0.5”

Former collection of Alain Martaud

Zoned fluorescence long & short UV


Fluorapatite with Pyrite and Siderite. Fluorapatite with Pyrite and Siderite.
Fluorapatite with Pyrite and Siderite.
 
Pyrite with Calcite
Pyrite with Calcite.

E9GK0: Group of complex crystals with a notable domination of the pentadodecahedron (pyritohedron) forms and with small but very evident faces of the octahedron. At the base there is a small group of white crystals of Calcite.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 7.2 × 4.8 × 2.3 cm = 2.8” × 1.9” × 0.9”

Main crystal size: 1.8 × 1.6 cm = 0.7” × 0.6”


 
Pyrite with Calcite-Dolomite and Muscovite

MA86AA7: Aggregate of cubic Pyrite crystals modified by the pyritohedron, some of them unusually elongated. The Pyrite crystals, very bright, are on a matrix of white Calcite-Dolomite crystals with leafy Muscovite aggregates on the back side.
Minas da Panasqueira / level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (10/2014)

Specimen size: 8.2 × 5.7 × 1.8 cm = 3.2” × 2.2” × 0.7”

Main crystal size: 1 × 0.5 cm = 0.4” × 0.2”


Pyrite with Calcite-Dolomite and Muscovite. Pyrite with Calcite-Dolomite and Muscovite.
 
Pyrite with Marcasite and Quartz
Pyrite with Marcasite and Quartz. Pyrite with Marcasite and Quartz.

N91HB4: Nice isn't it? Just sulphides on Quartz but the esthetics are superb!
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 8.6 × 6 × 3.5 cm = 3.4” × 2.4” × 1.4”


 
Pyrite with Calcite-Dolomite and Quartz

AF96Y8: Isolated very bright cubic Pyrite crystals slightly modified by the pyritohedron. They are on a growth of white Calcite-Dolomite crystals partially coating a clear Quartz crystal. The sample has been photographed for a long article in Mineral Up magazine devoted to the mineralogy of Portugal, although we cannot assure that the image will be definitely published.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 8.8 × 3 × 2.8 cm = 3.5” × 1.2” × 1.1”

Main crystal size: 1.7 × 1.6 cm = 0.7” × 0.6”

Former collection of Alain Martaud


Pyrite with Calcite-Dolomite and Quartz. Pyrite with Calcite-Dolomite and Quartz.
 
Pyrite on Quartz and Calcite-Dolomite
Pyrite on Quartz and Calcite-Dolomite. Front
Front
Pyrite on Quartz and Calcite-Dolomite. Side
Side
Pyrite on Quartz and Calcite-Dolomite.

AP27Y8: Very bright Pyrite crystals combining the octahedron, the cube and some other minor forms. They are isolated and are implanted on a matrix of Quartz and Dolomite crystals coated by white, small lenticular Calcite-Dolomite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 15.2 × 9.7 × 4 cm = 6.0” × 3.8” × 1.6”

Main crystal size: 1.9 × 1.5 cm = 0.7” × 0.6”

Former collection of Alain Martaud


 
Chalcopyrite and Quartz

N3BA2: Chalcopyrite with Quartz. Sharp crystal.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 3.5 × 3 cm = 1.4” × 1.2”


Chalcopyrite and Quartz.
 
Chalcopyrite with Arsenopyrite, Siderite and Muscovite
Chalcopyrite with Arsenopyrite, Siderite and Muscovite. Front
Front
Chalcopyrite with Arsenopyrite, Siderite and Muscovite. Rear
Rear
Chalcopyrite with Arsenopyrite, Siderite and Muscovite. Top
Top

TG27P3: Parallel growth of two large crystals of Chalcopyrite with excellent luster (for the locality) whose matrix is a group of prismatic crystals of Arsenopyrite, some of them doubly terminated, and with lenticular crystals of Siderite and leafy aggregates of Muscovite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 6.3 × 5.2 × 4.1 cm = 2.5” × 2.0” × 1.6”

Main crystal size: 3.5 × 3.2 cm = 1.4” × 1.3”


 
Stannite with Sphalerite and Arsenopyrite

NQ60F4: A curious and unusual form. The crystals of Sphalerite have such curved edges and faces that they appear to be almost spherical. The Stannite is a fine coating, which makes the Sphalerite appear satin. At the base there are some prismatic, well-developed crystals of Arsenopyrite that make this one seem aerial and esthetic.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 4.2 × 3.2 × 2.7 cm = 1.7” × 1.3” × 1.1”


Stannite with Sphalerite and Arsenopyrite.
 
Chalcopyrite with Stannite, Arsenopyrite and Galena
Chalcopyrite with Stannite, Arsenopyrite and Galena.

NC16I7: Complex crystals of Chalcopyrite, very bright and with clearly curved faces and edges, covered by Stannite forming a crust, with minor Galena and prismatic crystals of Arsenopyrite. Interesting and original.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 10.8 × 7.3 × 5.3 cm = 4.3” × 2.9” × 2.1”


 
Tetrahedrite with Siderite and Fluorapatite

N13BF2: A real rarity for this mine, as we think that almost no one has ever noted the presence of Tetrahedrite at Panasqueira. The small brilliant crystals are gray-black and are on prismatic Siderite. There is also some green Fluorapatite, which adds to the interest of the specimen. We will give the buyer a copy of the analysis of the Tetrahedrite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2000)

Specimen size: 8 × 6.5 × 3 cm = 3.1” × 2.6” × 1.2”

Fluorapatite fluorescent long & short UV


Tetrahedrite with Siderite and Fluorapatite. Tetrahedrite with Siderite and Fluorapatite.
 


Carbonates

Siderite with Quartz
Siderite with Quartz. Front
Front
Siderite with Quartz. Side
Side

N7CK0: Crystal of tabular habit partially covered by small Pyrite crystals. The base is a group of Quartz crystals.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 5.8 × 5.1 × 6.2 cm = 2.3” × 2.0” × 2.4”

Main crystal size: 4.1 × 3.5 cm = 1.6” × 1.4”


 
Siderite with Chalcopyrite, Fluorapatite and Ferberite

NB63G4: Very aerial lenticular crystals, very defined and with especially esthetic color. We also emphasize the dominant crystal's position on the matrix of Pyrite, Sphalerite and little Fluorapatite crystals.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 7 × 5.8 × 3.7 cm = 2.8” × 2.3” × 1.5”

Main crystal size: 4.5 × 3.2 cm = 1.8” × 1.3”


Siderite with Chalcopyrite, Fluorapatite and Ferberite.
 
Siderite with Arsenopyrite
Siderite with Arsenopyrite.

NJ62G1: An very attractive group of tabular Siderite crystals with defined color zones in its peripheries. The group is on a matrix in of Arsenopyrite, Sphalerite, Quartz and Pyrite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 7.2 × 5 × 4.5 cm = 2.8” × 2.0” × 1.8”


 
Siderite with Quartz and Arsenopyrite

NM16F4: The Siderite has formed an intensely colored, rose-like spray of crystals, which cover the Quartz. On these lenticular crystals there are some crystals of Arsenopyrite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 10.7 × 7 × 8.5 cm = 4.2” × 2.8” × 3.3”


Siderite with Quartz and Arsenopyrite.
Siderite with Quartz and Arsenopyrite.
 
Siderite with Fluorapatite and Quartz
Siderite with Fluorapatite and Quartz.

N96CG3: A very large crystal. Its color is lovely and the trigonal symmetry is clearly revealed by its triangular central face. On the surface of its faces appear, recrystallized and with color zoning, some little crystals of the same Siderite with Fluorapatite and Quartz.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1999)

Specimen size: 11.5 × 9.5 × 5.5 cm = 4.5” × 3.7” × 2.2”

Fluorapatite intense fluorescence long & short UV


 
Siderite with Quartz and Fluorapatite

N12TK0: Group of first generation crystals, so they are translucent and have an excellent color and luster. On the Siderite there is a small group of tabular Fluorapatite crystals and Quartz crystals. This type of first generation Siderite is very uncommon at Panasqueira.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1995)

Specimen size: 6.6 × 4.4 × 2.1 cm = 2.6” × 1.7” × 0.8”

Main crystal size: 6.1 × 2 cm = 2.4” × 0.8”

Fluorapatite very fluorescent long & short UV


Siderite with Quartz and Fluorapatite. Front
Front
Siderite with Quartz and Fluorapatite. Side
Side
 
Dolomite with Mica
Dolomite with Mica.

NC36C3: Something very different for the common stuff from this mine. Very brilliant and a little bit transparent groups of parallel crystals of very white Dolomite. The quality is much better than the others and the form is totally different from the regular ones from this mine.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2002)

Specimen size: 10 × 5 × 5.5 cm = 3.9” × 2.0” × 2.2”


 


Quartz

Doubly terminated Quartz

N4ACA0: A very transparent doubly terminated quartz crystal.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1996)

Specimen size: 6 × 3.5 cm = 2.4” × 1.4”


Doubly terminated Quartz.
 
Quartz with Siderite and Pyrite
Quartz with Siderite and Pyrite. Front
Front
Quartz with Siderite and Pyrite. Rear
Rear

AA86Y6: Clear Quartz crystal with very clean and well defined faces and edges and partially coated by clusters of platy Siderite crystals, a very clear cream color and partially coated by Pyrite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 7.1 × 3.1 × 2.2 cm = 2.8” × 1.2” × 0.9”

Former collection of Alain Martaud


 
Quartz with Fluorapatite and Siderite

TA46H4: Typical crystal from Panasqueira. On the termination on a bed of Siderite crystals there is a group of green, very bright and short prismatic crystals of Fluorapatite.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 8.5 × 4.8 × 3.3 cm = 3.3” × 1.9” × 1.3”

Extremely fluorescent long & short UV


Quartz with Fluorapatite and Siderite. Quartz with Fluorapatite and Siderite.
 
Quartz with Arsenopyrite & inclusions
Quartz with Arsenopyrite & inclusions. Quartz with Arsenopyrite & inclusions.

NZ46E6: Very transparent crystals of Quartz. So you can see the well-defined crystals of Arsenopyrite and sprays of Mica inside it. They were trapped in it as the Quartz grew. The Quartz itself is a floater (with a recrystallized base) and has a totally undamaged tip, which is not that common in specimens from Panasqueira given the way they are collected. On the outside there are similar minerals to those inside: Mica and Arsenopyrite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 9.8 × 8.3 × 3.2 cm = 3.9” × 3.3” × 1.3”


 
Quartz with Dolomite

N61V: This is a nice specimen! A very pleasant coating of Dolomite on the peaks of a clear complete (recrystallized on the bottom) totally damage free Quartz floater (very unusual for big specimens from Panasqueira) with a touch of class: small black Ferberite crystals placed on the top of invisible Quartz phantoms inside the Quartz crystal.

Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 16.5 × 11 cm = 6.5” × 4.3”


Quartz with Dolomite.
 


Cassiterite

Cassiterite with Fluorapatite, Siderite and Quartz
Cassiterite with Fluorapatite, Siderite and Quartz.

NE60M7: Very well defined twin on matrix with small crystals of Fluorapatite, Siderite and Quartz. The Cassiterite crystal has a contact on the back.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 1.7 × 1.3 × 1.2 cm = 0.7” × 0.5” × 0.5”

Main crystal size: 1.3 × 1.1 cm = 0.5” × 0.4”

Fluorapatite fluorescent long & short UV


 
Cassiterite with Muscovite

AF38Y6: Group of very bright crystals with notable transparency. They form complex cyclic twins and are slightly coated by Muscovite micro-crystals. The Cassiterite crystals have a very notable size for the locality.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 3.7 × 2.7 × 2 cm = 1.5” × 1.1” × 0.8”

Main crystal size: 1.7 × 1.6 cm = 0.7” × 0.6”

Former collection of Alain Martaud


Cassiterite with Muscovite.
 
Cassiterite with Muscovite and Schorl-Dravite
Cassiterite with Muscovite and Schorl-Dravite. Cassiterite with Muscovite and Schorl-Dravite.

AB47Y6: Very aerial and almost floater group of very bright crystals that have notable transparency and form complex cyclic twins. They are on a rocky matrix, with Muscovite and small acicular tourmaline (Schorl-Dravite) crystals.
This specimen has been reviewed and published in the magazine ‘Lapis’ on page 43, volume 39, number 7-8, July-August 2014
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 10.2 × 6.8 × 4.5 cm = 4.0” × 2.7” × 1.8”

Former collection of Alain Martaud


 


Fluorite

Fluorite with Ferberite and Siderite

NA13AA4: Parallel polycrystalline growth of cubic Fluorite crystals beveled by the dodecahedron. They are translucent, have a sky-blue color with violet shades and are implanted on a Ferberite crystal partially coated by Siderite. The sample is an excellent example of the variety of forms and colors on the recent samples found at the upper levels at Panasqueira.
Minas da Panasqueira / level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (07/2014)

Specimen size: 2.7 × 2.1 × 1.5 cm = 1.1” × 0.8” × 0.6”

Main crystal size: 0.4 × 0.4 cm = 0.2” × 0.2”

Minor fluorescence short UV


Fluorite with Ferberite and Siderite.
 
Fluorite with Fluorapatite, Arsenopyrite-Marcasite and Muscovite
Fluorite with Fluorapatite, Arsenopyrite-Marcasite and Muscovite.

MR12Z7: Aggregate of Fluorite crystals, one of them clearly dominant, with the very well defined faces of the dodecahedron without other combined faces, which is very rare for the species. The Fluorite crystals have a slightly pink color and are on matrix, with Arsenopyrite, Marcasite, platy yellow Fluorapatite crystals and leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 3.2 × 2.5 × 2.1 cm = 1.3” × 1.0” × 0.8”

Main crystal size: 1.6 × 1.5 cm = 0.6” × 0.6”

Fluorapatite fluorescent long & short UV


 
Fluorite with Topaz, Muscovite and Chlorite

MD57Z4: Cubic Fluorite crystal with very well defined faces and edges. It is translucent, with a pale violet color, and has laminar Muscovite inclusions. On Pyrite matrix partially coated by Chlorite and with two small very well defined Topaz crystals. The sample is an excellent representative of the old, and scarce, Fluorite with Topaz from Panasqueira.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 3.3 × 3.2 × 2.7 cm = 1.3” × 1.3” × 1.1”

Main crystal size: 2.2 × 2.2 cm = 0.9” × 0.9”


Fluorite with Topaz, Muscovite and Chlorite. Fluorite with Topaz, Muscovite and Chlorite.
 
Fluorite with Siderite
Fluorite with Siderite.

NC12AA4: Very sharp cubic Fluorite crystals. They are bright and completely transparent with a very deep and uniform violet color. They are implanted on a Siderite matrix with small Pyrite crystals. The sample is an excellent example of the variety of forms and colors on the recent samples found at the upper levels at Panasqueira.
Minas da Panasqueira / level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (07/2014)

Specimen size: 4.4 × 2.2 × 0.6 cm = 1.7” × 0.9” × 0.2”

Main crystal size: 0.5 × 0.5 cm = 0.2” × 0.2”


 
Fluorite with Pyrite, Siderite and Arsenopyrite

NV46AA4: Group of cubic Fluorite crystals, one of them clearly dominant, beveled by the dodecahedron. They are translucent, have a very deep violet color, rough surfaces with a velvety aspect. They have a small groups of Pyrite crystals on their faces and are on matrix, with Arsenopyrite and lenticular Siderite crystals. The sample is an excellent example of the variety of forms and colors on the recent samples found at the upper levels at Panasqueira.
Minas da Panasqueira / level 0, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (07/2014)

Specimen size: 5.5 × 4.5 × 3.3 cm = 2.2” × 1.8” × 1.3”

Main crystal size: 2 × 1.8 cm = 0.8” × 0.7”


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

EX99AA2: Fluorite crystals with an octahedral shape, very uncommon at Panasqueira, with rough polycrystalline surfaces cut by the smooth faces of the cube. They have an intense lilac color and are implanted on a matrix of Quartz crystals coated by Muscovite and small Pyrite crystals. Fluorite from Panasqueira, considered rare some time ago, is currently a more common species sometimes as elegant as this one.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (03/2014)

Specimen size: 6.8 × 5.7 × 3.1 cm = 2.7” × 2.2” × 1.2”

Main crystal size: 1.6 × 1.5 cm = 0.6” × 0.6”

Minor fluorescence short UV


 
Fluorite with Quartz and Clinochlore

NB67Z7: Very sharp cubic Fluorite crystals whose white cubic faces have a curious glassy aspect and are translucent on the edges. They are on a Quartz matrix, with columnar Clinochlore growths and small leafy Muscovite aggregates.
Minas da Panasqueira / level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2014)

Specimen size: 7.8 × 5.7 × 3.3 cm = 3.1” × 2.2” × 1.3”

Main crystal size: 1.1 × 1.1 cm = 0.4” × 0.4”

Minor fluorescence short UV


Fluorite with Quartz and Clinochlore. Fluorite with Quartz and Clinochlore.
 
Fluorite with Quartz and Siderite
Fluorite with Quartz and Siderite. Front
Front
Fluorite with Quartz and Siderite. Top
Top
Fluorite with Quartz and Siderite.

AK57Y8: Group of cubo-octahedral Fluorite crystals coated by a second generation forming white globular growths of the same mineral. They are on a matrix of Quartz crystals, showing very well defined corrosion shapes, and are with aggregates of lenticular Siderite crystals. The globular Fluorite has been analyzed and we’ll send a copy of the analysis to the buyer. The sample previously was on the collections of Christophe Lucas and Jacques Maupas.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 8.5 × 6.5 × 5.7 cm = 3.3” × 2.6” × 2.2”

Main crystal size: 0.8 × 0.8 cm = 0.3” × 0.3”

Former collection of Alain Martaud

Minor fluorescence long & short UV


 


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

NA10J1: 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.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 3.9 × 2.3 × 2.1 cm = 1.5” × 0.9” × 0.8”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”


Descloizite with Calcite.
 
Descloizite
Descloizite.

NV9I8: Columnar and arborescent groups, very aerial and esthetic, of dipyramidal crystals, most of them doubly terminated, with very well-defined faces and edges. They have good luster.
This specimen was photographed in the magazine ‘Le Règne Minéral’ number 75, page 23.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 4.2 × 2.8 × 1.4 cm = 1.7” × 1.1” × 0.6”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”


 
Descloizite with Calcite

NJ57I8: Columnar, very aerial growths of dipyramidal crystals, most of them doubly terminated, with very well-defined faces and edges. They have good luster and are on white Calcite crystals.
This specimen was photographed in the magazine ‘Le Règne Minéral’ number 75, page 23.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 4.9 × 2.9 × 1.4 cm = 1.9” × 1.1” × 0.6”


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

NF13I7: Group on Limonite matrix of small bright crystals, most of them doubly terminated, forming dipyramids with very well-defined faces and edges. The specimen is very esthetic due its columnar growths, with very attractive crests and vugs.
This specimen was photographed and published as a novelty at the 2007 Tucson Show in the magazine ‘Le Règne Minéral’ number 74, page 9.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 4.9 × 3.8 × 3.1 cm = 1.9” × 1.5” × 1.2”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”


 
Descloizite with Calcite

NA26J1: Columnar growths of very bright small crystals, many of them doubly terminated and forming dipyramids of very well defined faces and edges. The groups contrast on a wall of scalenohedral crystals of white Calcite on a matrix of Limonite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 5.2 × 5 × 3 cm = 2.0” × 2.0” × 1.2”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”


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

NE6I8: Columnar, very aerial growths of dipyramidal crystals, most of them doubly terminated, with very well-defined faces and edges. They have good luster and are on white Calcite crystals.
The specimen has been published in the magazine ‘Mineral Up’ on page 19 in number 2008/2.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 5.9 × 4.6 × 2.5 cm = 2.3” × 1.8” × 1.0”

Main crystal size: 0.1 × 0.1 cm = 0.0” × 0.0”


 
Descloizite with Calcite

NG50I7: Flattened group of columnar growths of small very bright crystals, most of them doubly terminated, forming dipyramids with very well-defined faces and edges. On one of the sides, in which Descloizite is more visible, there is a botryoidal growth of Calcite, while the opposite side is completely covered by very acute scalenohedral crystals of white Calcite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 12.3 × 6.7 × 4.4 cm = 4.8” × 2.6” × 1.7”

Main crystal size: 0.1 × 01 cm = 0.0” × 0.4”


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

NE11M9: Parallel growths of acute rhombohedral crystals, white and showing a slightly silky luster.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 8.1 × 7.2 × 5.1 cm = 3.2” × 2.8” × 2.0”

Main crystal size: 1.8 × 1.2 cm = 0.7” × 0.5”

Minor fluorescence long & short UV


 
Plattnerite with Calcite

MR10M9: Small but well defined and bright crystals of this very uncommon species. They are partially covered by stalagmitic growths of Calcite whose color is between orange and creamy.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (03/2007)

Specimen size: 6.7 × 3 × 2.2 cm = 2.6” × 1.2” × 0.9”

Calcite minor fluorescence long & short UV


Plattnerite with Calcite. Plattnerite with Calcite.
 
Plattnerite with Calcite
Plattnerite with Calcite. Plattnerite with Calcite.

MQ10M9: Small but well defined and bright crystals of this very uncommon species. They are partially covered by stalagmitic growths of Calcite whose color is between orange and creamy.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (03/2007)

Specimen size: 6.8 × 3.2 × 3 cm = 2.7” × 1.3” × 1.2”

Calcite minor fluorescence long & short UV


 
Plattnerite with Calcite

MB62M9: Irregular aggregate of black crystals, small but very well defined and bright, of this very uncommon species. They are on globular Calcite whose color is between orange and creamy.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (03/2007)

Specimen size: 9.2 × 5.2 × 2.4 cm = 3.6” × 2.0” × 0.9”

Calcite minor fluorescence long & short UV


Plattnerite with Calcite.
Plattnerite with Calcite.
 
Willemite
Willemite.
Willemite.

NF57J1: At this locality where the most well known mineral is Descloizite, there are other interesting samples. This Willemite has small but very well defined crystals whose clear color contrasts with the dark Limonite matrix. The specimen is intensely fluorescent under ultraviolet light. The sample has been analyzed and we will send a copy of the analysis to the buyer.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 6.7 × 3.9 × 2.4 cm = 2.6” × 1.5” × 0.9”

Intense fluorescence short UV & fluorescent long UV


 
Willemite pseudo Cerussite

NL57J5: One of the novelties of the year from Preguiça Mine. Willemite replaced small crystals that we suppose were Cerussite, not analytically confirmed because Willemite completely replaced the preexisting species.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 3.8 × 2 × 2.2 cm = 1.5” × 0.8” × 0.9”

Main crystal size: 0.3 × 0.1 cm = 0.1” × 0.0”

Intense fluorescence short UV & fluorescent long UV


Willemite pseudo Cerussite.
 
Willemite with Plattnerite
Willemite with Plattnerite.
Willemite with Plattnerite.

NA9J5: One of the novelties of the year from Preguiça Mine. Willemite replaced small crystals that we suppose were Cerussite, not analytically confirmed because Willemite completely replaced the preexisting species. With the Willemite there are also small crystals of Plattnerite that we analyzed. We’ll send a copy of the analysis to the buyer.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 10 × 7.5 × 4 cm = 3.9” × 3.0” × 1.6”

Main crystal size: 0.6 × 0.1 cm = 0.2” × 0.0”

Intense fluorescence short UV & fluorescent long UV


 
Descloizite after Vanadinite

NC7N7: The Preguiça Mine is currently well known and the species from there well described. Anyway, an unusual find was made there in 2006, a pseudomorph of Descloizite after Vanadinite. The analysis we did shows only Descloizite but the crystal form is without doubt that of former Vanadinite.
This specimen was photographed in the magazine ‘Le Règne Minéral’ number 88, page 42.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2006)

Specimen size: 2.4 × 2.2 × 2.2 cm = 0.9” × 0.9” × 0.9”

Main crystal size: 0.2 × 0.2 cm = 0.1” × 0.1”


Descloizite after Vanadinite.
 
Descloizite after Vanadinite
Descloizite after Vanadinite. Descloizite after Vanadinite.

NX10N7: The Preguiça Mine is currently well known and the species from there well described. Anyway, an unusual find was made there in 2006, a pseudomorph of Descloizite after Vanadinite. The analysis we did shows only Descloizite but the crystal form is without doubt that of former Vanadinite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2006)

Specimen size: 9.3 × 8.8 × 3.3 cm = 3.7” × 3.5” × 1.3”

Main crystal size: 0.2 × 0.1 cm = 0.1” × 0.0”


 


Doubly terminated Cassiterite

AE47Z1: Complete, untwinned, floater crystals showing the very well defined faces of two prisms and a dipyramid. The sample is from a known but very little disclosed Portuguese locality from which there have been scarce pieces of this quality.
Boticas, Chaves  Portugal (1987-2013)

Specimen size: 2.8 × 2.6 × 2.7 cm = 1.1” × 1.0” × 1.1”

Former collection of Alain Martaud


Doubly terminated Cassiterite. Front
Front
Doubly terminated Cassiterite. Rear
Rear
Doubly terminated Cassiterite. Top
Top
 
Quartz
Quartz.

AA59Y8: Curious tubular Quartz growing with twists and curves whose surface is coated by small white crystals. The sample is from a locality that is very little known on the international collecting circuits.
Mina da Senhora da Assunção, Aldeia Nova, Sátão, Viseu  Portugal (2011)

Specimen size: 6.5 × 1.5 × 2.3 cm = 2.6” × 0.6” × 0.9”

Former collection of Alain Martaud


 
Pseudomalachite

N6AI7: Botryoidal and microcrystalline growths on matrix of this relatively rare phosphate. Its green color is quite variable, darker when more crystalline. The specimen is very rich in Pseudomalachite.
Miguel Vacas Mine, Vila Viçosa, Évora  Portugal (1997)

Specimen size: 10.3 × 8 × 6.5 cm = 4.1” × 3.1” × 2.6”


Pseudomalachite. Front
Front
Pseudomalachite. Side
Side
 
Twinned Calcite
Twinned Calcite. Twinned Calcite.

AM47Z0: Aggregate of twinned and complex Calcite crystals with the clearly dominant scalenohedron. They are transparent, bright and come from a Portuguese locality from which usually are not many samples.
Cantera Vale Rodrigues, Moita do Poço, Turquel, Alcobaça, Leiria  Portugal (2009)

Specimen size: 10.6 × 8.2 × 4.8 cm = 4.2” × 3.2” × 1.9”

Main crystal size: 3.5 × 2 cm = 1.4” × 0.8”

Former collection of Alain Martaud

Fluorescent long & short UV


 



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