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28 Nov-04:00:00 Re: collection of volkmar stingl (Volkmar Stingl)
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28 Nov-00:05:40 Re: cannon slr with stacking (Fiebre Verde)
27 Nov-23:30:31 Re: cannon slr with stacking (Peter Lemkin)
27 Nov-13:58:06 Re: cannon slr with stacking (Fiebre Verde)
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27 Nov-11:18:52 Re: collection of volkmar stingl (Volkmar Stingl)
27 Nov-10:27:52 Re: collection of michael shaw (Michael Shaw)
27 Nov-05:02:15 The mizunaka collection - fluorite (Am Mizunaka)
26 Nov-17:19:00 A brief introduction to the rio site at cabeco do piao - silvia's collection (Silvia)
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25 Nov-20:34:16 The mizunaka collection - rhodochrosite (Am Mizunaka)
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25 Nov-10:33:37 Re: collection of volkmar stingl (Volkmar Stingl)
25 Nov-10:27:48 Epitaxial or twinned rutile? (Josele)
24 Nov-15:05:05 Siderite and fluorite - silvia's collection (Silvia)
24 Nov-14:48:09 Re: silvia's collection (Silvia)
24 Nov-05:03:39 Re: silvia's collection (Sante Celiberti)

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Silvia's Collection
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silvia




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PostPosted: Oct 27, 2021 15:12    Post subject: Re: Fluorite Panasqueira style - Silvia's Collection  

Tobi wrote:
silvia wrote:
Fluorite in collector quality specimens is not too common at Panasqueira, but a representative sample must be included in all collections of Panasqueira minerals
That's right, not too common. The more I like this sample, the fluorites are well developed with an interesting structure (kind of intergrown cuboctahedral crystals?) and have a wonderful dark blue colour in contrast with the associated minerals. Panasqueira is not a main focus of mine but I like the minerals from that deposit - especially when they are combined in such a colourful piece!

Regards
Tobi


Pity Panasqueira is not your mine too. :)

I will be posting some pictures of another Fluorite specimen soon in which the Fluorite occurs as frosted blue cubic crystals with Fluorapatite.

We also have some very nice Cassiterite specimens from Panasqueira too, nothing like the material we have from Viloco, but still an important addition to our suite of Panasqueira minerals.
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PostPosted: Oct 28, 2021 13:18    Post subject: The Crystal Shop - Silvia's Collection  

Mineral Collecting at Panasqueira

During most of the life of the Mine, its owners and operators have had a strict no mineral collecting policy. One of the conditions of employment requires all workers in the mine to have bags, helmets and work clothing checked before they leave the mine.

In Barroca Grande, the mine operates a mineral shop. Mine workers are encouraged to take any specimens they find in the mine during the course of their working activities to the crystal shop. The proceeds of the sale of the minerals so found benefit the shareholders and the local community. This is a really fine win-win situation for all parties.



000 -MINE ENTRANCE.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Entrance to modern mine - note Security Office.
 Viewed:  1534 Time(s)

000 -MINE ENTRANCE.jpg



00 - OLD SECURITY CHECK 1960'S.jpg
 Mineral: _
 Description:
Worker being checked for minerals, circa 1960's - Old mine entrance, Barroca Grande
 Viewed:  1532 Time(s)

00 - OLD SECURITY CHECK 1960'S.jpg



0 - MODERN SECURITY CHECK 2000'S.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Workers being screened in the 2000's at new mine entrance.
 Viewed:  1533 Time(s)

0 - MODERN SECURITY CHECK 2000'S.jpg



01 -Crystal Shop.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The Crystal Shop
 Viewed:  1536 Time(s)

01 -Crystal Shop.jpg



02 - CRYSTAL SHOP.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Crystal Shop - large specimens in locked cabinet
 Viewed:  1533 Time(s)

02 - CRYSTAL SHOP.jpg



03 - CRYSTAL SHOP.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Crystal Shop - lots of Quartz
 Viewed:  1533 Time(s)

03 - CRYSTAL SHOP.jpg



04 - CRYSTAL.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Crystal Shop - mixed specimens
 Viewed:  1530 Time(s)

04 - CRYSTAL.jpg



05 - CRYSTAL.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Crystal Shop - Quartz specimens
 Viewed:  1531 Time(s)

05 - CRYSTAL.jpg



06 - FERBERITE CRYSTALS - PANASQUIERA MINES.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Crystal Shop - young lady showing some Ferberite crystals for sale.
 Viewed:  1534 Time(s)

06 - FERBERITE CRYSTALS - PANASQUIERA MINES.jpg



07 - FERBERITE SPECIMEN PANASQUIERA MINES.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
A very large plate of Ferberite crystals - note scale in lower right
 Viewed:  1533 Time(s)

07 - FERBERITE SPECIMEN PANASQUIERA MINES.jpg



08 - MINERAL CONCENTRATES PANASQUIERA MINES.jpg
 Mineral: _
 Description:
The Crystal Shop - Bottles showing concentrates produced at the mine. We have been promised some of these too for our collection.
 Viewed:  1531 Time(s)

08 - MINERAL CONCENTRATES PANASQUIERA MINES.jpg



09 - MINERALS OF THE PANASQUIERA MINES.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The Crystal Shop - sets of all the main minerals recovered from the mine. This would be a great gift for a young person with an interest in minerals.
 Viewed:  1531 Time(s)

09 - MINERALS OF THE PANASQUIERA MINES.jpg



PANASQUEIRA NEWSPAPER ARTICLE 1.jpeg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
A newspaper article about a vendor in Panasqueira minerals.
 Viewed:  1541 Time(s)

PANASQUEIRA NEWSPAPER ARTICLE 1.jpeg


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Jordi Fabre
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PostPosted: Oct 28, 2021 13:32    Post subject: Re: Silvia's Collection  

Tantas lembranças!

Saudinhas ao Zé da tropa
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silvia




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PostPosted: Oct 29, 2021 17:29    Post subject: Cassiterite - Silvia's Collection  

The specimen has lustrous black sharp crystals of Cassiterite to 2 cm in size with bright metallic crystals of Arsenopyrite to 2 cm. Gemmy green tabular crystals of Fluorapatite to 1.5 cm are scattered across the backside of the piece with Muscovite and Chalcopyrite. The Fluorapatite crystals exhibit bright orange fluorescence in the presence of UVA light.


01 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg
 Mineral: Cassiterite, Arsenopyrite, Fluorapatite, Chalcopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 6 cm x 3 cm
 Description:
Cassiterite is one of the economic minerals mined at Panasqueira. The association of Cassiterite with Arsenopyrite and Chalcopyrite is no too common at the mine
 Viewed:  1410 Time(s)

01 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg



02 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg
 Mineral: Cassiterite, Arsenopyrite, Fluorapatite, Chalcopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 6 cm x 3 cm
 Description:
Rear of the specimen
 Viewed:  1413 Time(s)

02 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg



03 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg
 Mineral: Cassiterite, Arsenopyrite, Fluorapatite, Chalcopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 6 cm x 3 cm
 Description:
Detail of the Cassiterite crystals
 Viewed:  1409 Time(s)

03 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg



04 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg
 Mineral: Cassiterite, Arsenopyrite, Fluorapatite, Chalcopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 6 cm x 3 cm
 Description:
Detail of the Cassiterite crystals
 Viewed:  1411 Time(s)

04 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg



05 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg
 Mineral: Cassiterite, Arsenopyrite, Fluorapatite, Chalcopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 6 cm x 3 cm
 Description:
Detail of the Chalcopyrite crystals
 Viewed:  1412 Time(s)

05 -  CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg



06 - CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg
 Mineral: Cassiterite, Arsenopyrite, Fluorapatite, Chalcopyrite, Muscovite
 Dimensions: 11 cm x 6 cm x 3 cm
 Description:
Detail of the Fluorapatite crystals
 Viewed:  1410 Time(s)

06 -  CASSITERITE, ARSENOPYRITE, CHALCOPYRITE.jpg


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silvia




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PostPosted: Oct 31, 2021 13:45    Post subject: Siderite - Silvia's Collection  

Siderite, Quartz, Dolomite, Muscovite, Pyrite

The specimen exhibits large rhombohedral crystals of siderite to 8 cm in size with glassy translucent crystallized Quartz and colorless crystals of Dolomite to 1.3 cm in size. Microcrystals of Pyrite are scattered throughout the specimen.



01 -SIDERITE WITH DOLOMITE ON QUARTZ.jpg
 Mineral: Siderite, Quartz, Dolomite, Muscovite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 8 cm x 7 cm
 Description:
Front view of specimen
 Viewed:  1301 Time(s)

01 -SIDERITE WITH DOLOMITE ON QUARTZ.jpg



02 -SIDERITE WITH DOLOMITE ON QUARTZ.jpg
 Mineral: Siderite, Quartz, Dolomite, Muscovite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 8 cm x 7 cm
 Description:
Rear view of specimen
 Viewed:  1303 Time(s)

02 -SIDERITE WITH DOLOMITE ON QUARTZ.jpg



03 -SIDERITE WITH DOLOMITE ON QUARTZ.jpg
 Mineral: Siderite, Quartz, Dolomite, Muscovite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 8 cm x 7 cm
 Description:
Side view of specimen
 Viewed:  1303 Time(s)

03 -SIDERITE WITH DOLOMITE ON QUARTZ.jpg



04 -SIDERITE WITHN DOLOMITE AND QUARTZ.jpg
 Mineral: Siderite, Quartz, Dolomite, Muscovite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 8 cm x 7 cm
 Description:
Bottom of specimen
 Viewed:  1304 Time(s)

04 -SIDERITE WITHN DOLOMITE AND QUARTZ.jpg



05 - SIDERITE WITH DOLOMITE ON QUARTZ.jpg
 Mineral: Siderite and Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 8 cm x 7 cm
 Description:
Detail of bottom
 Viewed:  1307 Time(s)

05 - SIDERITE WITH DOLOMITE ON QUARTZ.jpg



06 - SIDERITE WITH DOLOMITE ON QUARTZ.jpg
 Mineral: Siderite, Dolomite and Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 8 cm x 7 cm
 Description:
Detail of crystals
 Viewed:  1304 Time(s)

06 - SIDERITE WITH DOLOMITE ON QUARTZ.jpg


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Michael Shaw
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PostPosted: Oct 31, 2021 19:04    Post subject: Re: Silvia's Collection  

Outstanding piece. One of my favorites thus far!
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silvia




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PostPosted: Oct 31, 2021 21:22    Post subject: Re: Silvia's Collection  

Michael Shaw wrote:
Outstanding piece. One of my favorites thus far!


Thanks Michael.

We have tried very hard to get collector quality material of all the significant minerals from Panasqueira.

Our emphasis has been on quality pieces that highlight the unique paragenesis that has occurred at the deposit. Ferberite, Siderite, Sphalerite and Fluorapatite are among our best. We have a few pictures of some of our Cassiterite, Marcasite, Pyrite, Fluorite, Topaz and Goyazite specimens still to upload. We still consider these significant as they tell a lot about how the deposit was formed.
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PostPosted: Nov 02, 2021 17:16    Post subject: In and about the Panasqueira mines – A pictorial Adventure; Silvia's Collection  

Treatment of water from the Panasqueira Mine.

Quality control of the mine water is very high, and twice a week samples are taken and analysed in the mill laboratory. Once a month samples are taken and sent to an independent laboratory. These results are checked every 6 months by the local authorities.

The original Salgueira water treatment plant was designed in 1957 for a peak capacity of 300 cubic meters of water per hour. In 2011 the plant was upgraded to handle 500 cubic meters of water per hour.

The plant comprises treatment tanks, multilevel building, and a lime storage and hopper system.

Lime is mixed with a small quantity of water by gravity feed from storage tanks. Manganese and other metals are precipitated out using suitable flocculants in the form of sludge. Precipitated sludge is then pumped to the tailings pond, and treated water is either discharged to the nearby creek or held in storage tanks for use in the mill or mine.



00 - AERIAL PHOTOGRAPH - PANASQUEIRA.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Photograph based on company reports and regional geography
 Viewed:  1137 Time(s)

00 - AERIAL PHOTOGRAPH - PANASQUEIRA.jpg



01 - Mine Water Discharge.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Grey scale photography of mine water discharge portal.
 Viewed:  1135 Time(s)

01 - Mine Water Discharge.jpg



02 -WATER TREATMENT FACILITY 1.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Water treatment facility
 Viewed:  1137 Time(s)

02 -WATER TREATMENT FACILITY 1.jpg



02A - NEW WATER TREATMENT FACILITY 2.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Water Treatment facility
 Viewed:  1135 Time(s)

02A - NEW WATER TREATMENT FACILITY 2.jpg



03 - Lime Conditioner 1.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Lime concentrator
 Viewed:  1136 Time(s)

03 - Lime Conditioner 1.jpg



04 -Lime Conditioner 2.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Lime concentrator looking towards water discharge portal.
 Viewed:  1132 Time(s)

04 -Lime Conditioner 2.jpg



05 - Lime Conditioner 3.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Another view of the lime conditioner unit
 Viewed:  1134 Time(s)

05 - Lime Conditioner 3.jpg



05A - WATER TREATMENT PLANT 9.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Flocullants being mixed
 Viewed:  1132 Time(s)

05A - WATER TREATMENT PLANT 9.jpg



06 -Treated Water discharged to creek.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Clean water being discharged to the nearby creek.
 Viewed:  1133 Time(s)

06 -Treated Water discharged to creek.jpg



07 - Creek to River Zezre.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The creek near the river Zêzere
 Viewed:  1135 Time(s)

07 - Creek to River Zezre.jpg



08 - RIO ZEZERE BRIDGE CABECO DA PIAO.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Bridge over the river Zêzere, near Cabeço do Pião. The road to Panasqueira Mines.
 Viewed:  1134 Time(s)

08 - RIO ZEZERE BRIDGE CABECO DA PIAO.jpg



09 - RIVER AND ROAD TO PANASQUIERA.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The road to Panasqueira Mines - dumps in the background
 Viewed:  1132 Time(s)

09 - RIVER AND ROAD TO PANASQUIERA.jpg


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Tobi
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PostPosted: Nov 03, 2021 05:00    Post subject: Re: In and about the Panasqueira mines – A pictorial Adventure; Silvia's Collection  

Silvia, thank you for the information and photos, I always love to get background stories and footage of famous mineral localities! Great to have someone new here in the community with so much knowledge and material of one of Europe's great localities!
silvia wrote:
We have tried very hard to get collector quality material of all the significant minerals from Panasqueira.
You tried hard - and you were successful :-)
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silvia




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PostPosted: Nov 03, 2021 17:10    Post subject: Ferberite - Silvia's Collection  

Lustrous bladed doubly terminated crystals of metallic black Ferberite to 7 cm standing on a matrix of bright lustrous crystals of Arsenopyrite to 3 cm. Quartz and Muscovite present too.


01 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg
 Mineral: Ferberite, Arsenopyrite, Quartz, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 16 cm x 14 cm x 8 cm
 Description:
Side View
 Viewed:  1014 Time(s)

01 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg



02 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg
 Mineral: Ferberite, Arsenopyrite, Quartz, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 16 cm x 14 cm x 8 cm
 Description:
Long View
 Viewed:  1012 Time(s)

02 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg



03 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg
 Mineral: Muscovite and Quartz
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 16 cm x 14 cm x 8 cm
 Description:
The bottom tells a lot about how the top was formed
 Viewed:  1013 Time(s)

03 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg



04 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg
 Mineral: Ferberite, Arsenopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 16 cm x 14 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1012 Time(s)

04 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg



05 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg
 Mineral: Ferberite, Arsenopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 16 cm x 14 cm x 8 cm
 Description:
Detail of the Quartz crystals. Very gemmy Quartz crystals but most of the crystal is obscured with a layer of crystallized Muscovite
 Viewed:  1012 Time(s)

05 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg



06 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg
 Mineral: Ferberite, Arsenopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 16 cm x 14 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1012 Time(s)

06 - FERBERITE WITH ARSENOPYRITE, QUARTZ AND MUSCOVITE.jpg


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Don Lum




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PostPosted: Nov 03, 2021 21:53    Post subject: Re: Silvia's Collection  

Wonderful specimens, superb photography.
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silvia




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PostPosted: Nov 04, 2021 16:30    Post subject: Re: Silvia's Collection  

Don Lum wrote:
Wonderful specimens, superb photography.


Thank you Don.

The pictures are taking using very basic equipment. My partner and I use a very inexpensive Coolpix 20.1MP camera, a few 6500K led house lights and a white plastic light box 300mm square.

We ignore what our own eyes see, and let the camera LCD view finder define what we see. This way if the camera sees a good shot, it will also produce a good photo.

To achieve good depth of field for close-up shots as many as 80 shots are taken at different focal points, and then stacked using software. Here we aim to get every aspect of the photograph in focus.

The three important things to get a good photo are lighting, lighting and lighting. The plastic box enables us to exclude all exterior light so we can control the interior light of the box.

If there is enough interest we could put together an article on how we take each photo, but please note that we are amateur photographers.
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Don Lum




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PostPosted: Nov 04, 2021 18:06    Post subject: Re: Silvia's Collection  

Silvia, I am interested in learning more about how you are taking your pictures, although I don't have any stacking software. 🙂
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silvia




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PostPosted: Nov 04, 2021 19:50    Post subject: Re: Silvia's Collection  

Don Lum wrote:
Silvia, I am interested in learning more about how you are taking your pictures, although I don't have any stacking software. 🙂


Hello Don:

I am more than happy to share, and my partner is more than happy to help to – he does most of the hard work :)

The camera we use is a Coolpix A100

We use a standard tripod, nothing fancy

The camera we use for the close-ups is a USB based microscope/camera with a long focal length. This enables the photographer to focus on any part of the specimen and move the focus in and out without changing the primary focus on the specimen. In most close-up photographs using a traditional optical microscope the background is often very much out of focus, but with this camera we can take multiple shots involving background, specimen and foreground. We take up to 80 shots and move from the focused background to the focused foreground. We then stack the individual shots using Helicon Focus. The result is the sort of pictures I have uploaded. Note that we also use the light box to do this so we can have much greater control over lighting.

The USB Microscope/Camera was once a very expensive piece of equipment, but now you can pick them up Ex-China for less than $200USD.

I will organize a few photos – you should find them interesting.
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James Catmur
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PostPosted: Nov 05, 2021 04:30    Post subject: Re: Silvia's Collection  

Great work, loving each photo and report of the superb mine
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silvia




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PostPosted: Nov 06, 2021 14:37    Post subject: Siderite2 - Silvia's Collection  

Large lenticular crystals of Siderite to 8 cm forming a cluster hosting bluish green crystals of Fluorapatite to 2 cm. Minor quartz and pyrite present as well. Arsenopyrite present on the base of the piece.

The Fluorapatite crystals display bright orange fluorescence in the presence of UVA light.



01 - SIDERITE ON ARSENOPYRITE.jpg
 Mineral: Siderite, Fluorapatite, Quartz, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 11 cm x 8 cm
 Description:
Large lenticular crystals
 Viewed:  713 Time(s)

01 - SIDERITE ON ARSENOPYRITE.jpg



01A - SIDERITE ON ARSENOPYRITE.jpg
 Mineral: Siderite, Fluorapatite, Quartz, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 11 cm x 8 cm
 Description:
Another view
 Viewed:  712 Time(s)

01A - SIDERITE ON ARSENOPYRITE.jpg



02 - SIDERITE ON ARSENOPYRITE.jpg
 Mineral: Siderite, Fluorapatite, Quartz, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 11 cm x 8 cm
 Description:
Detail of Arsenopyrite and other crystals
 Viewed:  710 Time(s)

02 - SIDERITE ON ARSENOPYRITE.jpg



03 - SIDERITE ON ARSENOPYRITE.jpg
 Mineral: Siderite, Fluorapatite, Quartz, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 11 cm x 8 cm
 Description:
The bottom of a specimens tells a lot about how the top was formed.
 Viewed:  713 Time(s)

03 - SIDERITE ON ARSENOPYRITE.jpg



04 - SIDERITE ON ARSENOPYRITE.jpg
 Mineral: Siderite, Fluorapatite, Quartz, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 11 cm x 8 cm
 Description:
Detail of crystals
 Viewed:  711 Time(s)

04 - SIDERITE ON ARSENOPYRITE.jpg



05- SIDERITE ON ARSENOPYRITE.jpg
 Mineral: Siderite, Fluorapatite, Quartz, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 11 cm x 8 cm
 Description:
Detail of crystals on bottom of specimen
 Viewed:  711 Time(s)

05- SIDERITE ON ARSENOPYRITE.jpg


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silvia




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PostPosted: Nov 06, 2021 18:41    Post subject: Re: Silvia's Collection  

James Catmur wrote:
Great work, loving each photo and report of the superb mine


Thanks James.

We have many fine specimens from other European localities too – Romania, Kosovo, Bulgaria, Russia – along with fine specimens from Morocco, Congo, Bolivia, Peru, Argentina, China and Australia.

At the moment Panasqueira is the focus, and we hope to create a picture book on the mine based on our collection and the photos we have uploaded to FMF. We were thinking about self-publishing it in A4 landscape mode on premium glossy paper with one picture per page with detailed explanation. Like our FMF contributions all areas will be covered – history, geography, mining and our minerals.

When done we are more than happy to provide it in PDF format for free. I was a teacher for many years, and it is hard to stop being one!
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Tobi
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PostPosted: Nov 08, 2021 03:39    Post subject: Re: Silvia's Collection  

silvia wrote:
At the moment Panasqueira is the focus, and we hope to create a picture book on the mine based on our collection and the photos we have uploaded to FMF. We were thinking about self-publishing it in A4 landscape mode on premium glossy paper with one picture per page with detailed explanation. Like our FMF contributions all areas will be covered – history, geography, mining and our minerals.
I think everyone who reads this is eagerly awaiting your publication as much as I do. I'm not even that much into Panasqueira as a personal collecting focus, but your appearance in the forum changed this during the last weeks :-)
silvia wrote:
When done we are more than happy to provide it in PDF format for free. I was a teacher for many years, and it is hard to stop being one!
Being a teacher, I know exactly what you mean. In this case, I'm the student and I'm eager for more Panasqueira knowledge!

Best regards
Tobi
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silvia




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PostPosted: Nov 08, 2021 18:35    Post subject: Re: Silvia's Collection  

Tobi wrote:
silvia wrote:
At the moment Panasqueira is the focus, and we hope to create a picture book on the mine based on our collection and the photos we have uploaded to FMF. We were thinking about self-publishing it in A4 landscape mode on premium glossy paper with one picture per page with detailed explanation. Like our FMF contributions all areas will be covered – history, geography, mining and our minerals.
I think everyone who reads this is eagerly awaiting your publication as much as I do. I'm not even that much into Panasqueira as a personal collecting focus, but your appearance in the forum changed this during the last weeks :-)
silvia wrote:
When done we are more than happy to provide it in PDF format for free. I was a teacher for many years, and it is hard to stop being one!
Being a teacher, I know exactly what you mean. In this case, I'm the student and I'm eager for more Panasqueira knowledge!

Best regards
Tobi



Hello Tobi

The mineral diversity of the Panasqueira ore body makes the mine one of the great mineral localities of the modern era.

The book will be in the form of a landscape format picture book. The emphasis will be on pictures and diagrams along with a little discussion of each item shown.
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PostPosted: Nov 08, 2021 18:56    Post subject: Cubic crystals of Fluorite - Silvia's Collection  

Collector quality specimens of Fluorite were never common at Panasqueira. Thus it was a challenge to obtain a matrix specimen of Fluorite displaying distinct crystals of Fluorite, along with a few other minerals common at the Panasqueira ore-body.

The specimen we acquired contains frosty translucent purple crystals of Fluorite to 2 cm on edge across the top of a crystallized Muscovite and Siderite matrix. Tabular green Fluorapatite crystals to 2 cm are present, as well as micro Pyrite.

The Fluorapatite exhibits bright orange fluorescence in the presence of UVA light.



01 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg
 Mineral: Fluorite, Fluorapatite, Siderite, Muscovite and Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 9 cm x 8 cm x 6 cm
 Description:
 Viewed:  485 Time(s)

01 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg



02 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg
 Mineral: Fluorite, Fluorapatite, Siderite, Muscovite and Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 9 cm x 8 cm x 6 cm
 Description:
Another View of the Fluorites
 Viewed:  485 Time(s)

02 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg



03 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg
 Mineral: Fluorite, Fluorapatite, Siderite, Muscovite and Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 9 cm x 8 cm x 6 cm
 Description:
Another view of the Fluorites
 Viewed:  484 Time(s)

03 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg



04 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg
 Mineral: Fluorite, Fluorapatite, Siderite, Muscovite and Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 9 cm x 8 cm x 6 cm
 Description:
Another view
 Viewed:  486 Time(s)

04 - FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg



05 -FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg
 Mineral: Fluorite, Fluorapatite, Siderite, Muscovite and Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 9 cm x 8 cm x 6 cm
 Description:
Details of the crystals
 Viewed:  486 Time(s)

05 -FLUORITE ON MUSCOVITE WITH FLUOAPATITE.jpg


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