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02 Jul-17:01:48 Some facts about uranium minerals (Silvia)
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Silvia's Collection
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silvia




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PostPosted: Oct 21, 2021 14:22    Post subject: Silvia's Collection - A very brief Introduction to mining at Panasqueira  

A VERY BRIEF INTRODUCTION TO MINING AT PANASQUEIRA

Mechanized room and pillar stoping is the principle mining method used at Panasqueira. It is made possible by the sub-horizontal nature of the Quartz veins and the very structurally sound nature of the host rock. Underground supports are seldom needed, but when argillaceous faults are encountered, concrete reinforcement is used, with arches either side of such faults in the main drives. When large opening are needed, rock bolts, screen and shotcrete provide the necessary support.

Stoping begins with ramps being driven to access the mineralized veins, in those areas where diamond drilling has indicated quartz intersections equal to or above 18 cm.

When a vein is accessed, it is blocked out on a basic 100m by 100m pattern. Ore passes of 1.8 metre diameter are generally bored near the drive/panel intersections. Ore can then be dropped down to the main haulage levels. Chutes are installed in the bottom of the ore-passes to facilitate the loading of the wagons.

Blast holes are drilled 2.4 metres in length and are 43mm in diameter.

There are four main levels in the mine, and all levels are connected by ramps. Level 530mRL (metres above sea level) is the main water drainage level of the mine. It lies between level 2 (560mRL) and Level 3 (470 mRL).

Below level 2 (560mRL) is the crusher. Ore above level 2 (560 mRL) is fed from ore passes (bins) into 4 Ton self-tipping rail cars and hauled by electric and diesel trolley locomotives to the ore chute on level 2 (560 mRL). The level 2 (560 mRL) ore chute feeds the underground crusher.

Ore from below Level 2 is trammed on Level 3 to the winze where the rail cars are individually hoisted to Level 2. From this shaft the cars are trammed to where they self-dump into the crusher ore chute. The underground crusher feeds ore to a conveyor belt in the Santa Barbara hoisting ramp.



00 - DIAGRAM OF THE LONG SECTION OF THE ORE TRANSFER SYSTEM.jpg
 Mineral: _
 Description:
 Viewed:  19744 Time(s)

00 - DIAGRAM OF THE LONG SECTION OF THE ORE TRANSFER SYSTEM.jpg



01 - DRILLING THE VEINS FOR BLASTING.jpg
 Mineral: _
 Description:
Blasting Holes
 Viewed:  19709 Time(s)

01 - DRILLING THE VEINS FOR BLASTING.jpg



02 - BLASTED ORE COLLECTED -MUCKING THE ORE.jpg
 Mineral: _
 Description:
Mucking Blasted Veins
 Viewed:  19719 Time(s)

02 - BLASTED ORE COLLECTED -MUCKING THE ORE.jpg



03 - ORE CART RAISED FROM LOWER LEVEL.jpg
 Mineral: _
 Description:
Raising of Ore Carts
 Viewed:  19717 Time(s)

03 - ORE CART  RAISED FROM LOWER LEVEL.jpg



04 - ORE HOIST.jpg
 Mineral: _
 Description:
Ore Hoist another view
 Viewed:  19706 Time(s)

04 - ORE HOIST.jpg



05 - ORE CHUTE TO CRUSHER.jpg
 Mineral: _
 Description:
Ore Chute to Underground Crusher
 Viewed:  19717 Time(s)

05 - ORE CHUTE TO CRUSHER.jpg



06 - TRUCKS DUMPING ORE TO CRUSHER.jpg
 Mineral: _
 Description:
Trucks dumping Ore into Ore Chute
 Viewed:  19722 Time(s)

06 - TRUCKS DUMPING ORE TO CRUSHER.jpg



07 - ORE CHUTE TO CRUSHER.jpg
 Mineral: _
 Description:
Ore Chute to Underground Crusher another view
 Viewed:  19734 Time(s)

07 - ORE CHUTE TO CRUSHER.jpg



08 - ORE CHUTE.jpg
 Mineral: _
 Description:
Another Ore Chute to load trucks
 Viewed:  19721 Time(s)

08 - ORE CHUTE.jpg



09 - ORE BIN 1.jpg
 Mineral: _
 Description:
Ore Bin upper level
 Viewed:  19715 Time(s)

09 - ORE BIN 1.jpg



10 - ORE BIN 2.jpg
 Mineral: _
 Description:
Ore Bin, note the circular hole - a product of the Bore Raiser used in the mine
 Viewed:  19720 Time(s)

10 - ORE BIN 2.jpg



11 - PRIMARY CRUSHER AND BELT TO SURFACE.jpg
 Mineral: _
 Description:
Crusher feeding conveyor belt
 Viewed:  19705 Time(s)

11 - PRIMARY CRUSHER AND BELT TO SURFACE.jpg



12 - CRUSHED ORE TO SURFACE TREATMENT FACILITIES.jpg
 Mineral: _
 Description:
Many fine specimens crushed to feed extraction facilities on the surface.
 Viewed:  19689 Time(s)

12 - CRUSHED ORE TO SURFACE TREATMENT FACILITIES.jpg


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silvia




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PostPosted: Oct 23, 2021 15:08    Post subject: Silvia's Collection - Classic Portugese Ferberite  

A classic Portuguese Ferberite with large lustrous bladed and blocky crystals of Ferberite measuring to 9 cm x 8 cm x 2 cm in size forming an aesthetic cluster with Chalcopyrite, minor Pyrite, and Muscovite.


1 FERBERITE.jpg
 Mineral: Ferberite, Chalcopyrite, Pyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 10 cm x 10 cm
 Description:
 Viewed:  19560 Time(s)

1 FERBERITE.jpg



2 FERBERITE.jpg
 Mineral: Ferberite, Chalcopyrite, Pyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 10 cm x 10 cm
 Description:
 Viewed:  19577 Time(s)

2 FERBERITE.jpg



3 FERBERITE.jpg
 Mineral: Ferberite, Chalcopyrite, Pyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 10 cm x 10 cm
 Description:
 Viewed:  19568 Time(s)

3 FERBERITE.jpg



4 FERBERITE.jpg
 Mineral: Ferberite, Chalcopyrite, Pyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 10 cm x 10 cm
 Description:
 Viewed:  19537 Time(s)

4 FERBERITE.jpg



5 FERBERITE.jpg
 Mineral: Ferberite, Chalcopyrite, Pyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 14 cm x 10 cm x 10 cm
 Description:
Detail of Ferberite
 Viewed:  19560 Time(s)

5 FERBERITE.jpg


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silvia




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PostPosted: Oct 24, 2021 20:05    Post subject: Silvia's Collection - Huge Siderite  

Large disc-shaped crystal of Siderite 14 cm in size set on a matrix of crystallized Siderite with Pyrite and Arsenopyrite.


01 - SIDERITE WITH PYRITE, ARSENOPYRITE.jpg
 Mineral: Siderite, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 15 cm x 15 cm x 7 cm
 Description:
Large disk of Siderite - Front View
 Viewed:  19459 Time(s)

01 - SIDERITE WITH PYRITE, ARSENOPYRITE.jpg



02 - SIDERITE WITH PYRITE, ARSENOPYRITE.jpg
 Mineral: Siderite, Arsenopyrite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 15 cm x 15 cm x 7 cm
 Description:
Siderite - rear View
 Viewed:  19503 Time(s)

02 - SIDERITE WITH PYRITE, ARSENOPYRITE.jpg


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Tobi
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PostPosted: Oct 25, 2021 01:34    Post subject: Re: Silvia's Collection  

Outstanding specimens, Silvia! That large ferberite is a stunner!
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silvia




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PostPosted: Oct 25, 2021 14:41    Post subject: Re: Silvia's Collection  

Tobi wrote:
Outstanding specimens, Silvia! That large ferberite is a stunner!


Thank you Tobi.

We have worked very hard to acquire some very nice Ferberite specimens from Panasqueira. Panasqueira does produce copper and tin concentrates for export, but Tungsten is the most important metal at the mine. In fact without Tungsten there would be no Panasqueira.

By the way we have been promised some representative samples (ca. 250 gram each) of all the concentrates from Panasqueira – tin, copper, tungsten – and when properly exhibited these should also add a lot of depth to our collection.
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PostPosted: Oct 25, 2021 17:59    Post subject: Re: Silvia's Collection - Schorl/Dravite Panasqueira  

Glassy green tabular Fluorapatite crystals to 2 cm in size on a base of fine needle like crystals of Schorl-Dravite (confirmed) and crystals of brassy Marcasite-Arsenopyrite to 1 cm. Quartz is also present. The rear of the specimen contains microcrystals of Dolomite. The Fluorapatite crystals display bright orange fluorescence in the presence of UVA light.


01 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series, Marcasite/Arsenopyrite, Quartz, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Crystals of Fluorapatite
 Viewed:  19195 Time(s)

01 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



02 -FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of Schorl/Dravite
 Viewed:  19197 Time(s)

02 -FLUORAPATITE ON SCHORL-DRAVITE.jpg



03 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of Schorl/Dravite
 Viewed:  19176 Time(s)

03 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



04 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of crystals
 Viewed:  19172 Time(s)

04 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



06 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of inclusions
 Viewed:  19191 Time(s)

06 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



05 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of Inclusions
 Viewed:  19160 Time(s)

05 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



07 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series, Marcasite/Arsenopyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of crystals
 Viewed:  19205 Time(s)

07 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



08 - FLUORAPATITE ON SCHORL-DRAVITE.jpg
 Mineral: Fluorapatite, Dravite-Schorl Series
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Detail of crystals
 Viewed:  19173 Time(s)

08 - FLUORAPATITE ON SCHORL-DRAVITE.jpg



09 - FLUORAPATITE ON SCHORL-DRAVITE - REAR.jpg
 Mineral: Dolomite, Dravite-Schorl Series
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 11 cm x 7 cm x 3 cm
 Description:
Rear of specimen
 Viewed:  19182 Time(s)

09 - FLUORAPATITE ON SCHORL-DRAVITE - REAR.jpg


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am mizunaka




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PostPosted: Oct 25, 2021 20:10    Post subject: Re: Silvia's Collection - Schorl/Dravite Panasqueira  

silvia wrote:
Glassy green tabular Fluorapatite crystals to 2 cm in size on a base of fine needle like crystals of Schorl-Dravite (confirmed) and crystals of brassy Marcasite-Arsenopyrite to 1 cm. Quartz is also present. The rear of the specimen contains microcrystals of Dolomite. The Fluorapatite crystals display bright orange fluorescence in the presence of UVA light.


A splendid fluorapatite specimen!
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silvia




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PostPosted: Oct 26, 2021 18:07    Post subject: Re: Silvia's Collection - Schorl/Dravite Panasqueira  

am mizunaka wrote:
silvia wrote:
Glassy green tabular Fluorapatite crystals to 2 cm in size on a base of fine needle like crystals of Schorl-Dravite (confirmed) and crystals of brassy Marcasite-Arsenopyrite to 1 cm. Quartz is also present. The rear of the specimen contains microcrystals of Dolomite. The Fluorapatite crystals display bright orange fluorescence in the presence of UVA light.


A splendid fluorapatite specimen!


Many thanks AM, it is very encouraging to get positive feedback
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silvia




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PostPosted: Oct 26, 2021 18:16    Post subject: Fluorite Panasqueira style - Silvia's Collection  

Lustrous bluish purple translucent crystals of Fluorite to 1.5 cm in size on a matrix containing micro crystals of Pyrite, small green crystals of Fluorapatite, and Siderite. The Fluorapatite crystals show a bright orange fluorescence in the presence of UVA light


01 - FLUORITE WITH PYRITE.jpg
 Mineral: Fluorite, Pyrite, Siderite, Fluorapatite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 6 cm x 4 cm
 Description:
Fluorite in collector quality specimens is not too common at Panasqueira, but a representative sample must be included in all collections of Panasqueira minerals
 Viewed:  18864 Time(s)

01 - FLUORITE WITH PYRITE.jpg



02 -FLUORITE.jpg
 Mineral: Fluorite, Pyrite, Siderite, Fluorapatite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 6 cm x 4 cm
 Description:
Detail of the Fluorite crystals
 Viewed:  18883 Time(s)

02 -FLUORITE.jpg



03 - FLUORITE.jpg
 Mineral: Fluorite, Siderite, Pyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 6 cm x 4 cm
 Description:
Detail of Fluorite and Siderite
 Viewed:  18877 Time(s)

03 - FLUORITE.jpg



04 - FLUORITE.jpg
 Mineral: Fluorite, Pyrite, Siderite, Fluorapatite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 6 cm x 4 cm
 Description:
Detail of the crystals
 Viewed:  18857 Time(s)

04 - FLUORITE.jpg



05 - FLUORITE.jpg
 Mineral: Fluorite, Pyrite, Siderite, Fluorapatite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 6 cm x 4 cm
 Description:
Detail of the crystals
 Viewed:  18845 Time(s)

05 - FLUORITE.jpg


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Tobi
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PostPosted: Oct 27, 2021 05:55    Post subject: Re: Fluorite Panasqueira style - Silvia's Collection  

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
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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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silvia




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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:  20590 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:  20581 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:  20568 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:  20592 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:  20621 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:  20560 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:  20573 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:  20611 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:  20557 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:  20569 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:  20575 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:  20575 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:  20579 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:  20444 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:  20493 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:  20453 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:  20435 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:  20482 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:  20439 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:  20357 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:  20342 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:  20349 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:  20374 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:  20326 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:  20361 Time(s)

06 - SIDERITE WITH DOLOMITE ON QUARTZ.jpg


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