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Mineral Specimens - page 5
Portugal - Panasqueira

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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
Descloizite with Calcite. Descloizite with Calcite.

ND26T4: Columnar growths of small dipyramidal crystals of Descloizite, partially coated by white crystals of Calcite and on a matrix of limonite.
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”


Order
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.
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”


Descloizite with Limonite. Descloizite with Limonite.
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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

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. 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


Order
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”


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


Order
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”


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

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”


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


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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.
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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”


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

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”


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

NR47I7: Group on Limonite matrix of small very bright crystals, most of them doubly terminated, forming dipyramids with very well-defined faces and edges. The specimen is very esthetic because of its attractive crests and vugs. A wide surface of the sample is covered by a layer of acute scalenohedron of white Calcite.
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”


Order
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


Plattnerite with Calcite. Plattnerite with Calcite.
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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 the Beira Baixa region of 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 Siderite, Arsenopyrite, Pyrite, Ferberite, Schorl-Dravite and Muscovite
Fluorapatite with Siderite, Arsenopyrite, Pyrite, Ferberite, Schorl-Dravite and Muscovite. 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, Beira Baixa  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


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, Beira Baixa  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 Dolomite
Fluorapatite with Siderite and Dolomite. Fluorapatite with Siderite and Dolomite.

N36JK9: Tabular crystals of Fluorapatite on matrix, well defined faces and edges and with an excellent luster. Partially covered by Siderite and Dolomite.
Minas da Panasqueira, Level 3, Beira Baixa  Portugal (2000)

Specimen size: 6.2 × 4.3 × 3.7 cm = 2.4” × 1.7” × 1.5”

Main crystal size: 1.8 × 0.7 cm = 0.7” × 0.3”

Zoned fluorescence long & short UV


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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, Beira Baixa  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”


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

TP47H9: The crystal is tabular, very aerial and with a very marked zonation of its color. It is esthetically implanted on a matrix with Muscovite and Siderite.
Minas da Panasqueira, Level 2, Beira Baixa  Portugal

Specimen size: 9.5 × 7.2 × 2.7 cm = 3.7” × 2.8” × 1.1”

Main crystal size: 2.3 × 1.8 cm = 0.9” × 0.7”

Intense fluorescence long & short UV


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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, Beira Baixa  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
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, Beira Baixa  Portugal

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

Intense fluorescence long & short UV


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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, Beira Baixa  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 Siderite
Fluorapatite with Siderite.

N47F2: The size of the crystal is not that large, but the very gentle violet color is magnificent and the partial coating of small crystals of Siderite make this an attractive specimen.
Minas da Panasqueira, Level 2, Beira Baixa  Portugal

Specimen size: 3.7 × 3 × 1.5 cm = 1.5” × 1.2” × 0.6”

Main crystal size: 0.9 × 0.8 cm = 0.4” × 0.3”

Fluorescent long & short UV


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Ferberite

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, Beira Baixa  Portugal

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


Ferberite. Front
Front
Ferberite. Side
Side
Order
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, Beira Baixa  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

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Ferberite with Muscovite and Quartz

N11YK9: Prismatic Ferberite crystal, doubly terminated and thicker than usual for this locality. Partially recovered by Muscovite and Siderite.
Minas da Panasqueira, Level 2, Beira Baixa  Portugal (1997)

Specimen size: 5.3 × 3.4 × 3.3 cm = 2.1” × 1.3” × 1.3”

Main crystal size: 3.4 × 2.8 cm = 1.3” × 1.1”


Ferberite with Muscovite and Quartz. Front
Front
Ferberite with Muscovite and Quartz. Top
Top
Order
Ferberite with Quartz and Siderite
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, Beira Baixa  Portugal (2001)

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


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Ferberite with Siderite

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, Beira Baixa  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”


Ferberite with Siderite. Front
Front
Ferberite with Siderite. Side
Side
Order
Ferberite with Siderite
Ferberite with Siderite. Front
Front
Ferberite with Siderite. Rear
Rear

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, Beira Baixa  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”


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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, Beira Baixa  Portugal (2002)

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

Fluorapatite very fluorescent long & short UV


Ferberite with Fluorapatite, Arsenopyrite and Muscovite.
Ferberite with Fluorapatite, Arsenopyrite and Muscovite.
Order

Sulfides

Pyrite
Pyrite.

CK36D3: Colored Pyrite with curved cubes covering a flat Calcite matrix.
Minas da Panasqueira, Level 2, Beira Baixa  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”


Order
Pyrite-Marcasite with Arsenopyrite

NB11M9: Aggregates of sharp cubic crystals of Pyrite with groups of Marcasite and all in a matrix of Arsenopyrite.
Minas da Panasqueira, Level 3, Beira Baixa  Portugal (2004)

Specimen size: 8.7 × 6.7 × 4.4 cm = 3.4” × 2.6” × 1.7”

Main crystal size: 2.5 × 1.2 cm = 1.0” × 0.5”


Pyrite-Marcasite with Arsenopyrite. Pyrite-Marcasite with Arsenopyrite.
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Arsenopyrite with Pyrite
Arsenopyrite with Pyrite. Arsenopyrite with Pyrite.

N11CG1: A group of prismatic crystals partially covered by Pyrite crystals, locally iridescent and positioned on a Muscovite matrix.
Minas da Panasqueira, Level 3, Beira Baixa  Portugal (1988)

Specimen size: 8.5 × 8.5 × 5.5 cm = 3.3” × 3.3” × 2.2”


Order
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, Beira Baixa  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.
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Epitaxial Arsenopyrite-Marcasite with Pyrite
Epitaxial Arsenopyrite-Marcasite with Pyrite. Epitaxial 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, Beira Baixa  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”


Order
Epitaxial Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite

TP88P3: Epitaxial 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, Beira Baixa  Portugal (1997)

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


Epitaxial Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite. Front
Front
Epitaxial Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite.
Epitaxial Arsenopyrite-Marcasite with Calcite, Siderite and Chalcopyrite. Side
Side
Order

Carbonates

Siderite with Quartz
Siderite with Quartz. 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, Beira Baixa  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”


Order
Quartz with Siderite and Ferberite

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, Beira Baixa  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”


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

E12EK9: Flattened rhombohedral Siderite crystal group, covering Quartz and small crystals of Arsenopyrite and Pyrite some of them included on the Quartz.
Minas da Panasqueira, Level 2, Beira Baixa  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”


Order
Siderite with Quartz and Fluorapatite

N9FK9: Flattened rhombohedral Siderite crystal, well defined, partially covered by prismatic Fluorapatite crystals on Quartz matrix.
Minas da Panasqueira, Level 2, Beira Baixa  Portugal (1998)

Specimen size: 5.5 × 4.8 × 4 cm = 2.2” × 1.9” × 1.6”

Main crystal size: 4.5 × 4 cm = 1.8” × 1.6”

Fluorapatite fluorescent long & short UV


Siderite with Quartz and Fluorapatite. Siderite with Quartz and Fluorapatite.
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Siderite with Arsenopyrite, Chalcopyrite and Sphalerite
Siderite with Arsenopyrite, Chalcopyrite and Sphalerite.
Siderite with Arsenopyrite, Chalcopyrite and Sphalerite. Siderite with Arsenopyrite, Chalcopyrite and Sphalerite.

N47CK9: Group of flattened rhombohedral and well defined Siderite crystals, partially covered by Arsenopyrite, with epigenetic Chalcopyrite on Sphalerite.
Minas da Panasqueira, Level 3, Beira Baixa  Portugal (1997)

Specimen size: 16 × 11.3 × 4.8 cm = 6.3” × 4.4” × 1.9”

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


Order
Siderite with Quartz

N7CK0: Crystal of tabular habit partially covered by small Pyrite crystals. The base is a group of Quartz crystals.
Minas da Panasqueira, Level 2, Beira Baixa  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 Quartz. Front
Front
Siderite with Quartz. Side
Side
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Siderite with Quartz
Siderite with Quartz. Front
Front
Siderite with Quartz. Top
Top

NC64G8: An encrustation of little crystals of Siderite covers the rhombohedral terminal faces of a Quartz prism. Two of the crystals have a big size enhancing from the group.
Minas da Panasqueira, Level 3, Beira Baixa  Portugal (2004)

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


Order
Siderite with Quartz

NE36G8: Magnificent formation of lenticular crystals of Siderite, very clear cream colored and covering a matrix of Quartz crystals.
Minas da Panasqueira, Level 3, Beira Baixa  Portugal (2002)

Specimen size: 10.7 × 9.8 × 4.4 cm = 4.2” × 3.9” × 1.7”


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

N32MA0: Perfect Siderite crystals perched on a also perfect Quartz. Great esthetics.
Minas da Panasqueira, Level 3, Beira Baixa  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”


Order

Quartz

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, Beira Baixa  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
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, Beira Baixa  Portugal (2004)

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


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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, Beira Baixa  Portugal (1999)

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


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

P14ZF2: A crystal of Quartz that is partially coated by Siderite acts as the base for the prisms of doubly-terminated Fluorapatite, which is light lilac and has internal zoning.
Minas da Panasqueira, Level 2, Beira Baixa  Portugal (1997)

Specimen size: 15 × 3.5 × 3 cm = 5.9” × 1.4” × 1.2”

Fluorapatite fluorescent long & short UV


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