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Mineral Specimens - page 5
Portugal - Panasqueira

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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.

 

 

 

The Alain Martaud Panasqueira Collection

Fluorapatite with Quartz, Muscovite, Arsenopyrite and Calcite
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, Covilhã, Castelo Branco, Cova da Beira  Portugal (1987-2013)

Specimen size: 3.8 × 3.2 × 4.5 cm = 1.5” × 1.3” × 1.8”

Main crystal size: 3.4 × 2.6 cm = 1.3” × 1.0”

Fluorescent long & short UV

Former collection of Alain Martaud


Order
Fluorapatite with Quartz, Ferberite, Arsenopyrite and Muscovite

AE86Z8: Thick tabular Fluorapatite crystal, between transparent and translucent, with concentric geometric color zoning and very rich in inclusions. It is implanted on a Quartz crystal partially coated by Muscovite and with a doubly terminated Ferberite crystal and smaller Arsenopyrite crystals.
Minas da Panasqueira, Covilhã, Castelo Branco, Cova da Beira  Portugal (1987-2013)

Specimen size: 5.2 × 4 × 2.7 cm = 2.0” × 1.6” × 1.1”

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

Fluorescent long & short UV

Former collection of Alain Martaud


Euro: 180 / US$ 244 / Yen: 25010 / AUD$ 260
Fluorapatite with Quartz, Ferberite, Arsenopyrite and Muscovite.
Reservado
Ferberite with Muscovite and Chalcopyrite
Ferberite with Muscovite and Chalcopyrite. Front
Front
Ferberite with Muscovite and Chalcopyrite. Rear
Rear

AM37Z8: Parallel growths of very bright Ferberite crystals with unusual very pointed terminations and flattened intergrowths of laminar Muscovite crystals and small Arsenopyrite crystals. Also, near the base on the sample, there is a small but very well defined Chalcopyrite crystal.
Minas da Panasqueira, Covilhã, Castelo Branco, Cova da Beira  Portugal (1987-2013)

Specimen size: 8 × 4.8 × 3.3 cm = 3.1” × 1.9” × 1.3”

Former collection of Alain Martaud


Order
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, Covilhã, Castelo Branco, Cova da Beira  Portugal (1987-2013)

Specimen size: 9.7 × 9.7 × 3 cm = 3.8” × 3.8” × 1.2”

Former collection of Alain Martaud


Siderite.
Order
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, Covilhã, Castelo Branco, Cova da Beira  Portugal (1987-2013)

Specimen size: 4 × 3.9 × 2.9 cm = 1.6” × 1.5” × 1.1”

Former collection of Alain Martaud

Minor fluorescence long & short UV


Order
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, Centro  Portugal (1987-2013)

Specimen size: 6.4 × 2.9 × 2.1 cm = 2.5” × 1.1” × 0.8”

Main crystal size: 2 × 0.9 cm = 0.8” × 0.4”

Former collection of Alain Martaud

Intense fluorescence short UV & fluorescent long UV


Fluorapatite with Siderite. Fluorapatite with Siderite.
Order
Fluorapatite with Pyrite and Siderite
Fluorapatite with Pyrite and Siderite. Fluorapatite with Pyrite and Siderite.
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


Order
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

Quartz with Fluorapatite and Chlorite. Front
Front
Quartz with Fluorapatite and Chlorite. Side
Side
Quartz with Fluorapatite and Chlorite. Quartz with Fluorapatite and Chlorite.
Sold
Ferberite with Siderite and Muscovite
Ferberite with Siderite and Muscovite. Front
Front
Ferberite with Siderite and Muscovite. Rear
Rear

AF56Y8: Very bright parallel polycrystalline growth of Ferberite with very well defined and sharp terminal faces. One side is completely coated by Siderite crystals which also line the perimeter of the aggregate.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 4.2 × 4.1 × 1.7 cm = 1.7” × 1.6” × 0.7”

Former collection of Alain Martaud


Sold
Arsenopyrite with Calcite

AA7Y8: Parallel growths of short prismatic Arsenopyrite crystals with perfect terminal faces. They are very bright and are on Calcite matrix.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 9.5 × 5.9 × 3 cm = 3.7” × 2.3” × 1.2”

Former collection of Alain Martaud


Arsenopyrite with Calcite. Arsenopyrite with Calcite.
Arsenopyrite with Calcite.
Order
Arsenopyrite-Marcasite with Muscovite
Arsenopyrite-Marcasite with Muscovite. Arsenopyrite-Marcasite with Muscovite.

AX86Y8: Very bright and sharp parallel growths of transitional Arsenopyrite-Marcasite with leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 5.5 × 5.4 × 3.7 cm = 2.2” × 2.1” × 1.5”

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

Former collection of Alain Martaud


Order
Arsenopyrite-Marcasite with Quartz with inclusions and Muscovite

AH90Z0: Fan-like aggregates with a first metallic-gray growth phase of Arsenopyrite that progressively passes to a second phase of very sharp Arsenopyrite-Marcasite crystals, with a very clear and bright Quartz crystal, rich in inclusions, and with small leafy Muscovite aggregates.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 9.4 × 9.4 × 5.5 cm = 3.7” × 3.7” × 2.2”

Former collection of Alain Martaud


Arsenopyrite-Marcasite with Quartz with inclusions and Muscovite. Arsenopyrite-Marcasite with Quartz with inclusions and Muscovite.
Order
Pyrite with Calcite-Dolomite
Pyrite with Calcite-Dolomite.

AY27Z0: Spheroidal aggregate of Pyrite crystals with the forms of the cube and pyritohedron. They are on a matrix of white Calcite-Dolomite crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 8.3 × 4.3 × 4.2 cm = 3.3” × 1.7” × 1.7”

Main crystal size: 1.3 × 1.2 cm = 0.5” × 0.5”

Former collection of Alain Martaud


Sold
Pyrite with Calcite-Dolomite and Quartz

AL96Z0: Aggregate of octahedral Pyrite crystals with small cube faces, with white laminar Calcite-Dolomite crystals and coating and outlining two Quartz crystals.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 13.2 × 5.5 × 3 cm = 5.2” × 2.2” × 1.2”

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

Former collection of Alain Martaud


Pyrite with Calcite-Dolomite and Quartz. Pyrite with Calcite-Dolomite and Quartz.
Sold
Sphalerite with Chalcopyrite, Arsenopyrite and Siderite
Sphalerite with Chalcopyrite, Arsenopyrite and Siderite. Front
Front
Sphalerite with Chalcopyrite, Arsenopyrite and Siderite. Top
Top

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, Centro  Portugal (1987-2013)

Specimen size: 3.7 × 3.2 × 2.8 cm = 1.5” × 1.3” × 1.1”

Main crystal size: 3 × 2.7 cm = 1.2” × 1.1”

Former collection of Alain Martaud


Order
Fluorite with Quartz, Siderite and Muscovite

AE97Z0: Cubic Fluorite crystals beveled by the dodecahedron. They have a very deep violet color and are on matrix, with lenticular Siderite crystals, leafy Muscovite aggregates and small Quartz crystals. The sample has an excellent quality for the locality, in which Fluorite was considered scarce until recently.
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1987-2013)

Specimen size: 7.8 × 6.7 × 3.7 cm = 3.1” × 2.6” × 1.5”

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

Former collection of Alain Martaud


Fluorite with Quartz, Siderite and Muscovite. Fluorite with Quartz, Siderite and Muscovite.
Sold
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


Euro: 290 / US$ 394 / Yen: 40300 / AUD$ 419
Reservado
Cassiterite with Chalcopyrite, Fluorapatite, Siderite and Muscovite

AH90Y8: Bright cyclic-twinned Cassiterite crystals, really large for the locality, with very well defined faces and edges and on matrix, with skeletal Chalcopyrite crystals, leafy Muscovite aggregates and small Siderite and Fluorapatite crystals. Just a great piece for Panasqueira cassiterites. 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 × 4 × 3.5 cm = 1.6” × 1.6” × 1.4”

Main crystal size: 2.3 × 1.6 cm = 0.9” × 0.6”

Former collection of Alain Martaud


Euro: 580 / US$ 788 / Yen: 80600 / AUD$ 839
Cassiterite with Chalcopyrite, Fluorapatite, Siderite and Muscovite. Front
Front
Cassiterite with Chalcopyrite, Fluorapatite, Siderite and Muscovite. Rear
Rear
Reservado
Cassiterite with Quartz and Siderite
Cassiterite with Quartz and Siderite. Cassiterite with Quartz and Siderite.

AD96Y6: Group of bright Cassiterite crystals forming complex cyclic twins. They are on a matrix of transparent Quartz crystals with some rough Siderite. This sample was in the Folch duplicates collection, whose label we’ll send to the buyer. It has an added interest because it is from Vale da Ermida, a zone somewhat away from the main mining area and is currently abandoned and awash.
Vale da Ermida, Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (±1964)

Specimen size: 7.7 × 5.7 × 4.9 cm = 3.0” × 2.2” × 1.9”

Main crystal size: 1.1 × 0.9 cm = 0.4” × 0.4”

Former collection of Alain Martaud


Order

Fluorapatite

Fluorapatite with Arsenopyrite and Pyrite

TE71Z8: Aggregate of thick tabular Fluorapatite crystals with very well developed pyramidal and pinacoidal faces, and with concentric geometric color zoning. They are transparent and very bright and are with minor Pyrite and Arsenopyrite. A classic piece that has been in different collections before it arrived in our hands. We will send all the labels to the buyer.
Minas da Panasqueira, Covilhã, Castelo Branco, Cova da Beira  Portugal

Specimen size: 7.1 × 4.5 × 1.6 cm = 2.8” × 1.8” × 0.6”

Main crystal size: 2.3 × 1 cm = 0.9” × 0.4”

Intense fluorescence short UV & fluorescent long UV


Fluorapatite with Arsenopyrite and Pyrite. Fluorapatite with Arsenopyrite and Pyrite.
Order
Fluorapatite
Fluorapatite. Fluorapatite.

ND16Z4: Very aerial group of bright tabular crystals with an uncommon very clear cream-pink color, very different than usual for Panasqueira.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 4.8 × 3.4 × 2.8 cm = 1.9” × 1.3” × 1.1”

Main crystal size: 1.3 × 0.9 cm = 0.5” × 0.4”

Fluorescence short UV & low fluorescence long UV


Order
Fluorapatite with Quartz and Muscovite

TT17Z4: Tabular Fluorapatite crystals, mostly violet but with a yellow core. They are bright and are on a matrix of Quartz crystals partially coated by Muscovite. This sample is very representative of the recent finds at Panasqueira.
Minas da Panasqueira / level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2013)

Specimen size: 5.1 × 4.5 × 1.8 cm = 2.0” × 1.8” × 0.7”

Main crystal size: 3.2 × 0.8 cm = 1.3” × 0.3”

Fluorescence short UV & low fluorescence long UV


Fluorapatite with Quartz and Muscovite. Fluorapatite with Quartz and Muscovite.
Sold
Fluorapatite with Pyrite, Siderite and Muscovite
Fluorapatite with Pyrite, Siderite and Muscovite. Front
Front
Fluorapatite with Pyrite, Siderite and Muscovite. Side
Side

TF10Z2: Group of very bright translucent crystals, some of them doubly terminated, with an intense clear blue color. The have the dominant forms of a prism and the pinacoid and less developed but clearly visible pyramidal faces. The aggregate is partially coated by Siderite, Muscovite and small cubic Pyrite crystals. A classic from a private collection and slightly different than more recent samples.
Minas da Panasqueira, Covilhã, Castelo Branco, Cova da Beira  Portugal

Specimen size: 6 × 4.1 × 2.6 cm = 2.4” × 1.6” × 1.0”

Main crystal size: 1.6 × 1.2 cm = 0.6” × 0.5”

Minor fluorescence short UV


Order
Quartz with Fluorapatite

N14CKF4: A neat group of brilliant, sharp Quartz crystals, some of which are doubly terminated, accompanied by tabular green Fluorapatite and small lenticular crystals of Siderite.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1994)

Specimen size: 7 × 5.5 × 5.5 cm = 2.8” × 2.2” × 2.2”

Fluorapatite fluorescent long & short UV


Quartz with Fluorapatite.
Quartz with Fluorapatite.
Order
Fluorapatite with Siderite and Muscovite
Fluorapatite with Siderite and Muscovite. Fluorapatite with Siderite and Muscovite.

NA56W7: Group of Fluorapatite crystals on matrix. Tabular, transparent, very bright and with a clear green color, they have very well marked concentric color zoning. With small crystals of Siderite and leafy Muscovite aggregates.
Minas da Panasqueira / level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2011)

Specimen size: 7.6 × 6 × 3.3 cm = 3.0” × 2.4” × 1.3”

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

Very fluorescent long & short UV


Sold
Fluorapatite with Mica

JM97E9: A parallel growth of three crystals. Although it is Fluorapatite, its transparency gives it a gentle color, the crystals are tabular and the prism is quite thin. The elegant layout of the crystals on the matrix of Muscovite gives it a nice touch.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 8.3 × 7 × 3 cm = 3.3” × 2.8” × 1.2”

Main crystal size: 2 × 1.7 cm = 0.8” × 0.7”

Extremely fluorescent long & short UV


Fluorapatite with Mica.
Fluorapatite with Mica.
Order
Fluorapatite with Pyrite and Siderite
Fluorapatite with Pyrite and Siderite. Fluorapatite with Pyrite and Siderite.
Fluorapatite with Pyrite and Siderite.

NP47Z7: Thick tabular Fluorapatite crystals, one of them clearly dominant, translucent, very bright, with a yellowish-green color, on matrix and partially coated by small very bright Pyrite crystals and small lenticular Siderite crystals.
Minas da Panasqueira / level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (04/2014)

Specimen size: 8.6 × 6.4 × 3.2 cm = 3.4” × 2.5” × 1.3”

Main crystal size: 2.6 × 1.1 cm = 1.0” × 0.4”

Fluorescent long & short UV


Sold
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.
Sold
Fluorapatite with Quartz and Siderite
Fluorapatite with Quartz and Siderite. Fluorapatite with Quartz and Siderite.

N58WA0: Fluorapatite well positioned on its matrix of quartz covered with siderite. Although the color of the Fluorapatite is not intense the photo does not do it justice.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 13 × 4.5 × 6.6 cm = 5.1” × 1.8” × 2.6”

Main crystal size: 1.5 × 0.6 cm = 0.6” × 0.2”


Order
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, Centro  Portugal (2000)

Specimen size: 13.3 × 7.8 × 5.6 cm = 5.2” × 3.1” × 2.2”

Main crystal size: 1.4 × 0.8 cm = 0.6” × 0.3”

Minor fluorescence long & short UV


Fluorapatite with Siderite and Muscovite.
Fluorapatite with Siderite and Muscovite.
Order

Ferberite

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

NQ37Z7: A doubly terminated Ferberite crystal with parallel growths and partially coated by Siderite, transparent doubly terminated Fluorapatite crystals and small leafy Muscovite aggregates.
Minas da Panasqueira / level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (04/2014)

Specimen size: 5.4 × 4.4 × 1 cm = 2.1” × 1.7” × 0.4”

Fluorapatite zoned fluorescence short UV

Order
Ferberite with Siderite

NB6E6: Very well defined, floater crystals of Ferberite. There is also some Mica and Siderite with them. Given their brilliance and perfection you can consider them to be one of the better quality Ferberites from the Panasqueira mines.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 5.7 × 5.3 × 2.5 cm = 2.2” × 2.1” × 1.0”

Main crystal size: 5.5 × 3.4 cm = 2.2” × 1.3”


Ferberite with Siderite. Front
Front
Ferberite with Siderite. Rear
Rear
Sold
Ferberite with Siderite
Ferberite with Siderite. Front
Front
Ferberite with Siderite. Side
Side

N13BIK9: Parallel growth of prismatic crystals of Ferberite partially covered (totally on the rear) by Siderite crystals, most of them doubly terminated.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1995)

Specimen size: 7.5 × 4.7 × 3.8 cm = 3.0” × 1.9” × 1.5”

Main crystal size: 4.2 × 2.7 cm = 1.7” × 1.1”


Order
Ferberite with Quartz and Siderite

NE61G8: Good group enhancing the front crystals with very acute terminations. The back of the piece is totally covered by little crystals of Siderite also covering a doubly terminated prismatic crystal of Quartz.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2001)

Specimen size: 7.8 × 6.6 × 3.5 cm = 3.1” × 2.6” × 1.4”


Ferberite with Quartz and Siderite.
Sold
Ferberite with Fluorapatite, Arsenopyrite and Muscovite
Ferberite with Fluorapatite, Arsenopyrite and Muscovite.
Ferberite with Fluorapatite, Arsenopyrite and Muscovite.

NH66M8: A curious Ferberite crystal group with multiple and irregular growths, and good luster. The crystals, on matrix, are with well defined and bright crystals of Arsenopyrite, laminar crystals of Muscovite and small crystals of Fluorapatite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2002)

Specimen size: 9.3 × 9 × 7.5 cm = 3.7” × 3.5” × 3.0”

Fluorapatite very fluorescent long & short UV


Order

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, Centro  Portugal

Specimen size: 12 × 10 × 1.3 cm = 4.7” × 3.9” × 0.5”

Main crystal size: 1 × 0.9 cm = 0.4” × 0.4”


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

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”


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Epitactic Arsenopyrite-Marcasite with Siderite, Calcite and Muscovite

TG69X8: Epitaxial Marcasite on parallel growths of sharp Arsenopyrite crystals showing the so-called “key” shape. They are on matrix, with small white Calcite crystals, small Siderite crystals and leafy Muscovite aggregates.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 13.7 × 10.7 × 8.2 cm = 5.4” × 4.2” × 3.2”

Main crystal size: 7 × 2.6 cm = 2.8” × 1.0”


Epitactic Arsenopyrite-Marcasite with Siderite, Calcite and Muscovite.
Epitactic Arsenopyrite-Marcasite with Siderite, Calcite and Muscovite. Epitactic Arsenopyrite-Marcasite with Siderite, Calcite and Muscovite.
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Quartz

Quartz with Pyrite
Quartz with Pyrite.

AJ58Q6: Parallel growth of two crystals of Quartz with a small aggregate of micro-crystals of Pyrite near the top.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal

Specimen size: 7 × 2.3 × 1.9 cm = 2.8” × 0.9” × 0.7”

Former collection of Josep Amigó (Silvane)


Order
Quartz with Siderite

E13DE2: Neat and brilliant Quartz with neat and brilliant Siderite. A floater with the base of the Quartz and Siderite re-crystallized.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1997)

Specimen size: 7 × 5 × 4.5 cm = 2.8” × 2.0” × 1.8”

Main crystal size: 5.5 × 4.5 cm = 2.2” × 1.8”


Quartz with Siderite.
Order
Quartz with Fluorapatite and Mica
Quartz with Fluorapatite and Mica.

N14YE2: A very clean and well defined Quartz Crystal. The upper termination is very unusual, with one of the faces far better developed than is normally the case. So overall it looks like the termination is flat. It also has some small crystals of Fluorapatite and Mica on the rear of the Quartz.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1999)

Specimen size: 8.5 × 2.2 × 1.9 cm = 3.3” × 0.9” × 0.7”


Order
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, Centro  Portugal (1994)

Specimen size: 13.4 × 7.8 × 6.2 cm = 5.3” × 3.1” × 2.4”

Main crystal size: 11.5 × 2.8 cm = 4.5” × 1.1”


Quartz with inclusions, Sphalerite and Siderite. Quartz with inclusions, Sphalerite and Siderite.
Order
Doubly terminated Quartz with Ferberite inclusions
Doubly terminated Quartz with Ferberite inclusions.
Doubly terminated Quartz with Ferberite inclusions. Doubly terminated Quartz with Ferberite inclusions.

NB36F4: A floater, doubly-terminated and with all the terminations perfect. In the center there is a very curious inclusion of small crystals of black Ferberite and others of Schorl-Dravite, which is acicular and a lighter color.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 17 × 3.5 × 2.5 cm = 6.7” × 1.4” × 1.0”


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Carbonates

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, Centro  Portugal (1997)

Specimen size: 7.2 × 6.4 × 5.2 cm = 2.8” × 2.5” × 2.0”

Main crystal size: 1.6 × 1.2 cm = 0.6” × 0.5”


Siderite with Quartz. Siderite with Quartz.
Order
Siderite with Quartz
Siderite with Quartz.

N32MA0: Perfect Siderite crystals perched on a also perfect Quartz. Great esthetics.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1998)

Specimen size: 7.5 × 4 × 4.5 cm = 3.0” × 1.6” × 1.8”

Main crystal size: 3 × 2.6 cm = 1.2” × 1.0”


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Siderite with Quartz

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, Centro  Portugal (2004)

Specimen size: 11.1 × 6.2 × 5 cm = 4.4” × 2.4” × 2.0”


Siderite with Quartz. Front
Front
Siderite with Quartz. Top
Top
Order
Quartz with Siderite and Ferberite
Quartz with Siderite and Ferberite. Front
Front
Quartz with Siderite and Ferberite. Side
Side
Quartz with Siderite and Ferberite. Top
Top

N14QM9: Lenticular, creamy crystals of Siderite that partially cover a Quartz crystal. On the Siderite there are small growths of Muscovite.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1999)

Specimen size: 11.7 × 5 × 4.7 cm = 4.6” × 2.0” × 1.9”

Main crystal size: 1.2 × 0.7 cm = 0.5” × 0.3”


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Siderite with Quartz and inclusions

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, Centro  Portugal (1997)

Specimen size: 11.8 × 8.6 × 5.5 cm = 4.6” × 3.4” × 2.2”

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


Siderite with Quartz and inclusions. Front
Front
Siderite with Quartz and inclusions. Top
Top
Order

Cassiterite

Cassiterite with Siderite and Quartz
Cassiterite with Siderite and Quartz.

AV63M9: Group of twinned crystals of Cassiterite, some of them partially doubly terminated and translucent, very bright, with lenticular crystals of Siderite and small crystals of Quartz and Muscovite.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1993)

Specimen size: 3.8 × 2.7 × 2 cm = 1.5” × 1.1” × 0.8”

Main crystal size: 0.7 × 0.6 cm = 0.3” × 0.2”

Former collection of Josep Amigó (Silvane)


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Fluorite

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, Covilhã, Castelo Branco, Cova da Beira  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 Fluorapatite, Arsenopyrite-Marcasite and Muscovite.
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Fluorite with Topaz, Muscovite and Chlorite
Fluorite with Topaz, Muscovite and Chlorite. 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, Covilhã, Castelo Branco, Cova da Beira  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”


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

TP47Z4: Very clear transparent Quartz crystal, with very sharp edges, partially coated by Muscovite and lenticular Siderite crystals and with translucent blue cubic Fluorite crystals. This sample is very representative of the recent finds at Panasqueira.
Minas da Panasqueira / level 1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (11/2013)

Specimen size: 8.6 × 3.7 × 3 cm = 3.4” × 1.5” × 1.2”

Main crystal size: 1.3 × 1.2 cm = 0.5” × 0.5”


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Stannite

Fluorapatite with Siderite, Quartz, Stannite and Arsenopyrite

NK14X9: Curious tabular Fluorapatite crystal with very well marked parallel growths. It is translucent, with Arsenopyrite inclusions and on matrix, with Arsenopyrite, Quartz, Siderite and Stannite crystals.
We’ll send a copy of the analysis of the Fluorapatite to the buyer.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1998)

Specimen size: 4.6 × 3.9 × 3.9 cm = 1.8” × 1.5” × 1.5”

Main crystal size: 2.9 × 1.5 cm = 1.1” × 0.6”

Fluorapatite fluorescent long & short UV


Fluorapatite with Siderite, Quartz, Stannite and Arsenopyrite. Fluorapatite with Siderite, Quartz, Stannite and Arsenopyrite.
Order
Stannite with Chalcopyrite and Arsenopyrite
Stannite with Chalcopyrite and Arsenopyrite. Stannite with Chalcopyrite and Arsenopyrite.

NF11X9: Stannite and Chalcopyrite intergrowths. The Stannite is slightly golden dark gray and the Chalcopyrite shows a brass color. The complexity of these growths, the poor definition of crystalline forms and the fact that Stannite also frequently substitutes for Sphalerite, resulted in Stannite having been almost unnoticed at Panasqueira. We’ll send a copy of the analysis to the buyer.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 5 × 2.1 × 3.3 cm = 2.0” × 0.8” × 1.3”


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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, Centro  Portugal (2001)

Specimen size: 6.7 × 5.4 × 4.1 cm = 2.6” × 2.1” × 1.6”


Arsenopyrite with Stannite, Calcite and Pyrite. Arsenopyrite with Stannite, Calcite and Pyrite.
Order
Chalcopyrite with Stannite, Arsenopyrite and Muscovite
Chalcopyrite with Stannite, Arsenopyrite and Muscovite.
Chalcopyrite with Stannite, Arsenopyrite and Muscovite. Chalcopyrite with Stannite, Arsenopyrite and Muscovite.

NV27X9: Brass-colored Chalcopyrite crystals with superficial iridescence, with slightly golden dark gray Stannite intergrowths. They are on matrix, with Arsenopyrite crystals and Muscovite coatings. We’ll send a copy of the analysis of the Stannite to the buyer.
Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (2004)

Specimen size: 10.5 × 8.8 × 6.3 cm = 4.1” × 3.5” × 2.5”


Order
Siderite with Dolomite, Arsenopyrite, Stannite, Chalcopyrite and Ferberite

NG99X9: Group of scalenohedral Siderite crystals. They are flattened, have curved faces and edges and are on a rocky matrix with a doubly terminated Arsenopyrite crystal settled on a group of dark gray Stannite crystals and with Chalcopyrite and Ferberite. We’ll send a copy of the analysis of the Stannite to the buyer.
Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro  Portugal (1992)

Specimen size: 12.3 × 10.3 × 8.7 cm = 4.8” × 4.1” × 3.4”

Main crystal size: 5 × 4.5 cm = 2.0” × 1.8”


Siderite with Dolomite, Arsenopyrite, Stannite, Chalcopyrite and Ferberite. Siderite with Dolomite, Arsenopyrite, Stannite, Chalcopyrite and Ferberite.
Order

Portugal


Pseudomalachite with Quartz
Pseudomalachite with Quartz. Pseudomalachite with Quartz.

AD6Z1: Botryoidal and microcrystalline growths of this relatively rare phosphate. They have a very deep and uniform color, are brighter than usual and they are on a Quartz matrix.
Miguel Vacas Mine, Vila Viçosa, Évora  Portugal (±1980)

Specimen size: 6.5 × 6.3 × 5.7 cm = 2.6” × 2.5” × 2.2”

Former collection of Alain Martaud


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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

NA76T4: Groups of dipyramidal crystals of Descloizite with very well defined faces and edges and very bright, with very acute crystals, between colorless and white, of Calcite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 6.4 × 4.1 × 2.3 cm = 2.5” × 1.6” × 0.9”


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

NV86M9: Very aerial and esthetic columnar growths of small, extraordinarily sharp and very bright crystals. They are dipyramidal and most of them doubly terminated. A group of white crystals of Calcite is on the Descloizite groups.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 6.7 × 5.5 × 2.7 cm = 2.6” × 2.2” × 1.1”

Main crystal size: 0.1 × 1 cm = 0.0” × 0.4”


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

Specimen size: 6.7 × 5.9 × 3.7 cm = 2.6” × 2.3” × 1.5”

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


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

NZ26M9: Group on matrix of Limonite of small, very bright crystals, a lot of them doubly terminated, that form sharp dipyramids.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 7 × 4.2 × 2.4 cm = 2.8” × 1.7” × 0.9”

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


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

Specimen size: 7 × 5.7 × 3.8 cm = 2.8” × 2.2” × 1.5”


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

NC46T4: 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
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 7.1 × 2.7 × 1.9 cm = 2.8” × 1.1” × 0.7”


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Descloizite with Calcite

ND66I7: 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 growths there is an esthetic group of lenticular crystals of white Calcite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 7.3 × 4.9 × 5 cm = 2.9” × 1.9” × 2.0”

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


Descloizite with Calcite. Front
Front
Descloizite with Calcite. Rear
Rear
Order
Descloizite with Calcite
Descloizite with Calcite. 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.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 7.3 × 5.1 × 4.1 cm = 2.9” × 2.0” × 1.6”


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

Specimen size: 7.8 × 7.6 × 4.9 cm = 3.1” × 3.0” × 1.9”


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

NB46I7: 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 its sides there is an esthetic growth of very acute scalenohedral crystals of white Calcite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 9.9 × 5.8 × 3.6 cm = 3.9” × 2.3” × 1.4”

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


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Descloizite with Calcite

NX47M9: Growth of dypyramidal crystals, most of them doubly terminated, of Descloizite. They have good luster and very well defined faces and edges. Grown on Limonite matrix, they were later covered by a generation of scalenohedral crystals of Calcite.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 10.2 × 6.9 × 3.8 cm = 4.0” × 2.7” × 1.5”

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


Descloizite with Calcite. Front
Front
Descloizite with Calcite. Rear
Rear
Descloizite with Calcite.
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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.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (2005-2006)

Specimen size: 10.9 × 4.3 × 3.4 cm = 4.3” × 1.7” × 1.3”

Calcite minor fluorescence long & short UV


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Descloizite with Calcite

To see a larger 3D image please
click here or on the image

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

Specimen size: 14 × 11.8 × 6.2 cm = 5.5” × 4.6” × 2.4”

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


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

MN12M9: Irregular aggregate of black crystals, small but very well defined and bright, of this very uncommon species. They are on a matrix of globular Calcite whose color is between orange and white.
Mina da Preguiça, Sobral da Adiça, Moura, Beja  Portugal (03/2007)

Specimen size: 10.5 × 6.9 × 4 cm = 4.1” × 2.7” × 1.6”

Calcite minor fluorescence long & short UV


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