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Silvia's Collection
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silvia




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PostPosted: Nov 10, 2021 14:34    Post subject: The Tale of Barroca Grande - Silvia's Collection  

Brief Discussion on the Barroca Grande Site

The Barroca Grande site includes the underground mine and portals, processing plant, mine offices and employee housing in addition to the active tailings disposal areas, and the Salgueira water treatment plant.

The underground jaw crusher situated below level 520 mRL in the mine delivers material no larger than 100mm in diameter (Run-of-Mine - ROM), to the Crushing, Washing and Screening (CWS) plant at a rate of about 160 ton per hour. After processing in the CWS plant, material greater than 0.8mm in diameter is fed to the Heavy Media Separation (HMS) plant. The material sent to the HMS plant accounts for approximately 80% of the original ore feed from the ROM.

Approximately 20 per cent of the original ore feed from the CWS plant is in the form of ‘fines’ and passes on to the sand and slimes shaking tables. Rejected material is either dumped as waste or sold as gravel.

Concentrate from the HMS plant is crushed in twin roll crushers. One of the roll crushers is dedicated to material 3 – 5 mm in diameter and this material is re-circulated to the HMS plant. Material less than 3 mm in diameter is hydrosized prior to concentration by gravity shaking tables. Gangue minerals, particularly quartz and other silicates are eliminated in this process. The sand tables’ concentrate, referred to as Pre-Concentrate, contains all the dense minerals, including Ferberite, Sulphides, Cassiterite and Siderite.

The pre-concentrate containing Ferberite, Sulphides, Cassiterite and Siderite are then screened into two fractions. The two fractions are passed over individual shaking tables. Sulphides are removed by flotation. The sulphides recovered then become feed for a copper circuit. The table concentrates, without sulphides, are dried and screened to prepare three sized fractions for dry high-intensity cross-belt magnetic separators. This produces a high grade Ferberite concentrate, and a non-magnetic cassiterite concentrate. The Cassiterite concentrate then goes to the Tin circuit for processing.



01 - MINE PLAN OPERATIONS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
An aerial photo of the main Barroca Grande site
 Viewed:  1505 Time(s)

01 - MINE PLAN OPERATIONS.jpg



01A - MINE PLANT PLAN 1.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
A mine plan my partner made to highlight the processing of ore at Barroca Grande
 Viewed:  1503 Time(s)

01A - MINE PLANT PLAN 1.jpg



02 - BARROCA GRANDE.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Barroca Grande
 Viewed:  1503 Time(s)

02 - BARROCA GRANDE.jpg



03 - BARROCA GRANDE.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Another View of Barroca Grande
 Viewed:  1502 Time(s)

03 - BARROCA GRANDE.jpg



04 - BARROCA GRANDE.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The ore body within the Hills in the background are the source of all my minerals
 Viewed:  1503 Time(s)

04 - BARROCA GRANDE.jpg



05 - OLD RAMP BARROCO GRANDE 2014.jpg
 Mineral: _
 Description:
A photo of the now disused Barroca Grande Mine entrance - approximately 1990.
 Viewed:  1503 Time(s)

05 -  OLD RAMP BARROCO GRANDE 2014.jpg



06 - MINING INSTALLATIONS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The main Ore processing facilities
 Viewed:  1503 Time(s)

06 - MINING INSTALLATIONS.jpg



07 -ORE TREATMENT FACILITY 1.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 ore processing facilities
 Viewed:  1503 Time(s)

07 -ORE TREATMENT FACILITY 1.jpg



08 - ORE TREATMENT FACILITY 2.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Another View
 Viewed:  1502 Time(s)

08 - ORE TREATMENT FACILITY 2.jpg



09 - SURFACE INSTALLATIONS NEW 1.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
View towards waste dumps
 Viewed:  1501 Time(s)

09 - SURFACE INSTALLATIONS NEW 1.jpg



10 - SURFACE INSTALLATIONS NEW 2.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Surface installations
 Viewed:  1502 Time(s)

10 - SURFACE INSTALLATIONS NEW 2.jpg



11 -SURFACE INSTALLATIONS PM.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  1500 Time(s)

11 -SURFACE INSTALLATIONS PM.jpg



12 - SURFACE INSTALLATIONS POND.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Thickener
 Viewed:  1501 Time(s)

12 - SURFACE INSTALLATIONS POND.jpg



13 -Tungsten Concentrate - 1 Ton bags.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
How many wonderful Ferberite crystals are but concentrate in these 1 tonne bags?
 Viewed:  1504 Time(s)

13 -Tungsten Concentrate - 1 Ton bags.jpg


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silvia




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PostPosted: Nov 10, 2021 15:30    Post subject: Re: Silvia's Collection  

And Cassiterite too.


14 -Tin Concentrate.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Many a fine Cassiterite lies in these bags!
 Viewed:  1483 Time(s)

14 -Tin Concentrate.jpg


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Tobi
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PostPosted: Nov 11, 2021 04:37    Post subject: Re: Silvia's Collection  

Very informative, Silvia, thank you!
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James Catmur
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PostPosted: Nov 11, 2021 12:31    Post subject: Re: Silvia's Collection  

Obrigado
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silvia




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PostPosted: Nov 11, 2021 19:36    Post subject: Fluoroapatite - Silvia's Collection  

Beautiful green translucent lustrous crystals of Fluorapatite to 2 cm in size on a matrix of lustrous black crystallized Sphalerite with yellow crystals of Siderite to 2 cm. Chalcopyrite and Muscovite present, and perhaps minor Fluorite. The Fluorapatite crystals exhibit a bright orange fluorescence under UVA light.


01 - SPHALERITE WITH FLUOROAPATITE, SIDERITE AND CHALCOPYRITE 2.jpg
 Mineral: Fluorapatite, Sphalerite, Siderite, Chalcopyrite, Muscovite, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 12 cm x 10 cm x 5 cm
 Description:
 Viewed:  1300 Time(s)

01 - SPHALERITE WITH FLUOROAPATITE, SIDERITE AND CHALCOPYRITE 2.jpg



03 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg
 Mineral: Siderite, Chalcopyrite, Sphalerite, Muscovite, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 12 cm x 10 cm x 5 cm
 Description:
Detail of crystals
 Viewed:  1301 Time(s)

03 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg



04 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg
 Mineral: Fluorapatite, Sphalerite, Muscovite, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 12 cm x 10 cm x 5 cm
 Description:
Detail of crystals
 Viewed:  1301 Time(s)

04 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg



05 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg
 Mineral: Sphalerite, Chalcopyrite, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 12 cm x 10 cm x 5 cm
 Description:
Detail of crystals
 Viewed:  1301 Time(s)

05 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg



06 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg
 Mineral: Siderite, Sphalerite, Chalcopyrite, Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 12 cm x 10 cm x 5 cm
 Description:
 Viewed:  1301 Time(s)

06 - SPHALERITE WITH SIDERITE AND CHALCOOPYRITE AND FLUROAPATITE.jpg


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silvia




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PostPosted: Nov 11, 2021 20:10    Post subject: Re: Silvia's Collection  

Tobi wrote:
Very informative, Silvia, thank you!


Many Thanks.

My partner and I are very keen on the mines too. Whenever possible we like to collect as much information as we can about the mine – its geology, development history, extraction methods and mining methods. I think this adds another dimension to a mineral collection, and it certainly makes us appreciate the minerals the mine produces.

In our opinion Panasqueira is one of the world’s great mines. In terms of mineral diversity there are few places that even come close to Panasqueira. I can only think of two that also display great mineral diversity – Broken Hill in Australia and Tsumeb in Africa. No doubt other collectors will add to the list.

In term of producing world class Ferberite and Fluorapatite specimens, Panasqueira has no equal.

We also have some very fine specimens from the mines of Romania, Bulgaria, Kosovo, Peru and Bolivia.
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silvia




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PostPosted: Nov 11, 2021 20:11    Post subject: Re: Silvia's Collection  

James Catmur wrote:
Obrigado


You are most welcome.
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silvia




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PostPosted: Nov 14, 2021 22:41    Post subject: Marcasite - Silvia's Collection  

Bright golden crystals of Marcasite to almost 2.0 cm in size stacked aesthetically on a matrix with Arsenopyrite, Calcite-Dolomite and crystallized Muscovite.


01 - MARCASITE WITH DOLOMITE.jpg
 Mineral: Marcasite, Arsenopyrite, Calcite-Dolomite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 10 cm x 9 cm x 8 cm
 Description:
 Viewed:  1123 Time(s)

01 - MARCASITE WITH DOLOMITE.jpg



02 - MARCASITE WITH DOLOMITE.jpg
 Mineral: Calcite-Dolomite, Marcasite, Arsenopyrite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 10 cm x 9 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1121 Time(s)

02 - MARCASITE WITH DOLOMITE.jpg



03 - MARCASITE WITH DOLOMITE.jpg
 Mineral: Marcasite, Arsenopyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 10 cm x 9 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1119 Time(s)

03 - MARCASITE WITH DOLOMITE.jpg



04 - MARCASITE WITH DOLOMITE.jpg
 Mineral: Marcasite, Arsenopyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 10 cm x 9 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1119 Time(s)

04 - MARCASITE WITH DOLOMITE.jpg



05 - MARCASITE WITH DOLOMITE.jpg
 Mineral: Marcasite, Arsenopyrite, Calcite-Dolomite, Muscovite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 10 cm x 9 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1119 Time(s)

05 - MARCASITE WITH DOLOMITE.jpg



06 - MARCASITE WITH DOLOMITE.jpg
 Mineral: Marcasite, Arsenopyrite, Calcite-Dolomite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 10 cm x 9 cm x 8 cm
 Description:
Detail of the crystals
 Viewed:  1119 Time(s)

06 - MARCASITE WITH DOLOMITE.jpg


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silvia




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PostPosted: Nov 16, 2021 20:12    Post subject: Fluorapatite on Muscovite - Silvia's Collection  

The specimen contains green tabular Fluorapatite crystals to 25 mm in size on a matrix of highly brilliant micro Muscovite crystals. A very pretty specimen!

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



01 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
 Viewed:  1001 Time(s)

01 - FLUORAPATITE WITH MUSCOVITE.jpg



02 - FLUORAPATITE WITH MUSCOVITE - REAR.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
rear view. Some small Fluorapatite, but mostly Muscovite
 Viewed:  998 Time(s)

02 - FLUORAPATITE WITH MUSCOVITE - REAR.jpg



03 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

03 - FLUORAPATITE WITH MUSCOVITE.jpg



04 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

04 - FLUORAPATITE WITH MUSCOVITE.jpg



05 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, Muscovite
 Dimensions: 11 cm x 6 cm x 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

05 - FLUORAPATITE WITH MUSCOVITE.jpg



06 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

06 - FLUORAPATITE WITH MUSCOVITE.jpg



07 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

07 - FLUORAPATITE WITH MUSCOVITE.jpg



08 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

08 - FLUORAPATITE WITH MUSCOVITE.jpg



09 - FLUORAPATITE WITH MUSCOVITE.jpg
 Mineral: Fluorapatite, 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 5 cm
 Description:
Detail of the crystals
 Viewed:  997 Time(s)

09 - FLUORAPATITE WITH MUSCOVITE.jpg


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silvia




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PostPosted: Nov 19, 2021 15:22    Post subject: The Story of Barroca Grande - Silvia's Collection  

MINE WASTE

The Barroca Grande Waste Dump lies directly above the Bodelhão Creek that flows south-easterly to the Rio Zêzere. Gravel, waste rock and sand tails are the main mine byproducts dumped at the site. Fine tails present the most challenging problems as they contain precipitate from Salgueira Water Treatment facility as well as the copper circuit tailings which contain up to 25% arsenic.

The old tailings TMF-1 area contains tailings deposited prior to 1985. The perimeter of this dam is approximately 750 metres for a total area of 35,000m2 area. The maximum depth is 50 metres at an elevation of about 600mRL. The mine operators are keen to re-process these tailings.

There are two other Fine Tailings Disposal Areas at the site designated TMF-2A which is now full, and a new disposal area designated as TMF-2B.

Fine tailings dam TMF-2A has been active since about 1998. At the end of 2013 it had a 1km perimeter for a total area of 69,000m2. Maximum depth was 50 metres at an elevation of 700mRL with a capacity of about 1,545,000m3. This is equivalent to about 3,347Kt of material. This dam, apart from sand and slimes, also received sludge from the water treatment plant, as well as the copper circuit tailings containing up to 25% of arsenic.

The fine tailings dam TMF-2B became active in 2019. It has a 1.6 kilometer perimeter for a total area of 135,000m2. It has a maximum depth of 70m with a maximum volume capacity of about 1,800,000m3.



01 - AERIAL PHOTO PANASQUEIRA DUMPS 2021.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
An aerial view of the waste disposal area at the mine.
 Viewed:  833 Time(s)

01 - AERIAL PHOTO PANASQUEIRA DUMPS 2021.jpg



02 - PANASQUEIRA DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
View of the dumps from Aldeia De Sao Francisco De Assis
 Viewed:  834 Time(s)

02 - PANASQUEIRA DUMPS.jpg



03 - PANASQUIERA DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Another view
 Viewed:  834 Time(s)

03 - PANASQUIERA DUMPS.jpg



04- PANASQUIERA DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Looking towards Barroca Grande
 Viewed:  834 Time(s)

04- PANASQUIERA DUMPS.jpg



05 - PANASQUIERA DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
A view of the new disposal area designated as TMF-2B.
 Viewed:  834 Time(s)

05 - PANASQUIERA DUMPS.jpg



06 - LOADING TRUCK WITH GRAVEL.jpg
 Mineral: _
 Description:
Truck being loaded with gravel for dumping.
 Viewed:  833 Time(s)

06 - LOADING TRUCK WITH GRAVEL.jpg



07 - PANASQUEIRA DUMPS.jpg
 Mineral: _
 Description:
Truck on its way to the dumps. Note Bodelhão Creek in the background.
 Viewed:  834 Time(s)

07 - PANASQUEIRA DUMPS.jpg



08 -WASTE DUMP.jpg
 Mineral: _
 Description:
Truck about to deposit gravel at the dumps.
 Viewed:  833 Time(s)

08 -WASTE DUMP.jpg



09 -WASTE DUMP.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Truck having unloaded all its gravel.
 Viewed:  835 Time(s)

09 -WASTE DUMP.jpg



10 - WASTE DUMP.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Looking east across the dumps.
 Viewed:  834 Time(s)

10 - WASTE DUMP.jpg



11-WASTE DUMP.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Looking down one of the dumps.
 Viewed:  834 Time(s)

11-WASTE DUMP.jpg



12 - PANASQUEIRA DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
The road back to the mill. to the right is the new tailings disposal area - TMF2B
 Viewed:  834 Time(s)

12 - PANASQUEIRA DUMPS.jpg


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silvia




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PostPosted: Nov 21, 2021 14:41    Post subject: Cassiterite - Silvia's Collection  

The specimen contains black crystals of Cassiterite to 15 mm on a matrix with golden crystallized Pyrite, Arsenopyrite and Siderite


01 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Cassiterite, Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
 Viewed:  693 Time(s)

01 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg



03 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Cassiterite, Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
Detail of the Cassiterite
 Viewed:  692 Time(s)

03 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg



04 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Cassiterite, Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
Detail of the Cassiterite
 Viewed:  692 Time(s)

04 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg



05 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
Detail of the Arsenopyrite
 Viewed:  693 Time(s)

05 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg



06 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Cassiterite, Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
Detail of the Arsenopyrite
 Viewed:  693 Time(s)

06 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg



07 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
Detail of the Siderite
 Viewed:  693 Time(s)

07 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg



08 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg
 Mineral: Pyrite, Arsenopyrite, Siderite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 6 cm x 4 cm x 4 cm
 Description:
Detail of the Pyrite
 Viewed:  693 Time(s)

08 - CASSITERITE WITH PYRITE AND MUSCOVITE.jpg


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silvia




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PostPosted: Nov 23, 2021 18:02    Post subject: Panasqueira under the Microscope – Silvia’s collection  

Panasqueira under the Microscope – Silvia’s collection

My partner organized a preliminary analysis of a sample of the suspected chlorite that coats many of the Quartz points of a specimen of Quartz with Arsenopyrite that I uploaded to my collections page.

Preliminary analysis indicates that the green spherical crystals that coat many of the Quartz points on the specimen in our collection are Clinochlore. Three samples were sent for analysis, and the sample used in the analysis is shown in the photo of the XRD.

We have asked for a complete elemental analysis to be conducted on the remaining crystals, and I will post the results when available.



XRD OF GREEN CRYSTALS.jpg
 Description:
 Viewed:  550 Time(s)

XRD OF GREEN CRYSTALS.jpg


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Sante Celiberti




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PostPosted: Nov 24, 2021 05:03    Post subject: Re: Silvia's Collection  

Hello, Mrs. Silvia.

Yes, almost certainly Chlorite Group.
I have a similar specimen somewhere labeled as Chlorite Group.
As you know, Clinochlore also is mentioned in Panasqueira.

I appreciate this opportunity to compliment your magnificent locality collection.
My best regards.
Sante
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silvia




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PostPosted: Nov 24, 2021 14:48    Post subject: Re: Silvia's Collection  

Sante Celiberti wrote:
Hello, Mrs. Silvia.

Yes, almost certainly Chlorite Group.
I have a similar specimen somewhere labeled as Chlorite Group.
As you know, Clinochlore also is mentioned in Panasqueira.

I appreciate this opportunity to compliment your magnificent locality collection.
My best regards.
Sante


Many thanks for your kind words. Panasqueira is just a wonderful locality for collector quality minerals. There are many mining regions that offer a wide range of minerals, but there are very few that offer a diversity of minerals from a single mine. This is why Panasqueira is so unique. Of course I could be biased. :)
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silvia




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PostPosted: Nov 24, 2021 15:05    Post subject: Siderite and Fluorite - Silvia's Collection  

A cluster of Siderite crystals the prominent crystal being 5 cm wide. This is set in a cluster with crystallized Ferberite and Arsenopyrite, pale purple translucent crystals of Fluorite to 5 mm on edge across the front of the main Siderite crystal cluster.


01 - SIDERITE WITH FLUORITE.jpg
 Mineral: Siderite, Fluorite, Ferberite, Arsenopyrite, Quartz
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 7 cm x 6 cm x 5 cm
 Description:
 Viewed:  442 Time(s)

01 - SIDERITE WITH FLUORITE.jpg



02 - SIDERITE WITH FLUORITE.jpg
 Mineral: Siderite, Fluorite, Ferberite, Arsenopyrite, Quartz
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 7 cm x 6 cm x 5 cm
 Description:
 Viewed:  442 Time(s)

02 - SIDERITE WITH FLUORITE.jpg



03 - SIDERITE WITH FLUORITE.jpg
 Mineral: Siderite, Fluorite, Ferberite, Arsenopyrite, Quartz
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 7 cm x 6 cm x 5 cm
 Description:
 Viewed:  442 Time(s)

03 - SIDERITE WITH FLUORITE.jpg



04 -SIDERITE WITH FLUORITE.jpg
 Mineral: Siderite, Ferberite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 7 cm x 6 cm x 5 cm
 Description:
 Viewed:  442 Time(s)

04 -SIDERITE WITH FLUORITE.jpg



05 -SIDERITE WITH FLUORITE ON FERBERITE.jpg
 Mineral: Siderite, Fluorite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 7 cm x 6 cm x 5 cm
 Description:
Detail of the crystals
 Viewed:  443 Time(s)

05 -SIDERITE WITH FLUORITE ON FERBERITE.jpg



06 - SIDERITE WITH FLUORITE ON FERBERITE.jpg
 Mineral: Siderite, Fluorite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
Detail of the crystals
 Viewed:  442 Time(s)

06 - SIDERITE WITH FLUORITE ON FERBERITE.jpg


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silvia




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PostPosted: Nov 26, 2021 17:19    Post subject: A brief introduction to The Rio Site at Cabeco do Piao - Silvia's Collection  

A brief introduction to The Rio Site at Cabeco do Piao

The Rio site contains the old mill, and a large coarse waste dump. Situated on top of the waste dump is a dried up tailings pond varying in depth from 25 to 70 metres. The dump contains coarse waste rock with minor amounts of pyrite and arsenopyrite, fine grained mill tailings, and a pile of arsenopyrite flotation tails. Estimates indicate that the total weight of the pile at Rio exceeds 8 million tonnes of material.

Until, March 21, 2006 Beralt (Tin and Tungsten Ltd) was legally responsible for the Rio site. On March 21, 2006, the Portuguese government signed an agreement that removed the site, and all associated environmental liabilities from the Beralt mining concession.

In 1904, a mechanized Mill was built in Cabeço do Pião, and historical records indicate that the disposal of mine waste at the Rio site started sometime between 1905 and 1910, and finished in 1996. In 1998 all milling operations ceased at the Rio site.

The original Mill at Cabeco do Piao was situated on a terraced slope on the left bank of the river Zezere some five kilometres west of the main mine at Barroca Grande. In 1912, an aerial cable (5100 m) was installed between Barroca Grande and Cabeco do Piao. For many years, the Rio Mill was supplied with hand-picked ore from the hand-picking plant at Barroca Grande via a rope way. In the early years of operation, cheap labour made it profitable to separate good ore from waste rock, and the only skills a good worker needed were physical strength, good eyesight and fast reflexes. Improvements in mechanization made the hand-picking plant redundant.

The Rio mill contained a Crushing and Grinding plant, a Gravity Treatment plant, a Flotation plant and an Electromagnetic Separation plant. The plant also contained well-equipped Mechanical and Electrical Workshops for the day-to-day maintenance of the plant.

Though the mill received power from a commercial power station some twenty kilometres away, it was also equipped with its own diesel-electric plant capable of supplying 1200 KVA output to meet all emergency needs at the mill.

FUTURE

There is an ongoing effort to use the waste rock to produce road construction materials.

There is also ongoing interest to turn the old facility at Rio into a tourist attraction. Some of the now abandoned facilities at the Rio site will be rebuilt to establish an interpretive mining Museum.



0 - CABECO DA PIAO MINE DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

0 - CABECO DA PIAO MINE DUMPS.jpg



01 - CABECO DA PIAO MINE DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

01 - CABECO DA PIAO MINE DUMPS.jpg



02 - CABECO DA PIAO MINE DUMPS.jpg
 Mineral: _
 Description:
 Viewed:  262 Time(s)

02 - CABECO DA PIAO MINE DUMPS.jpg



03 - CABECO DA PIAO MINE DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

03 - CABECO DA PIAO MINE DUMPS.jpg



04 - CABECO DA PIAO MINE DUMPS.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

04 - CABECO DA PIAO MINE DUMPS.jpg



05 - AERIAL CABLE STRUCTURE 1.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

05 - AERIAL CABLE STRUCTURE 1.jpg



06 - AERIAL CABLE STRUCTURE 2.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

06 - AERIAL CABLE STRUCTURE 2.jpg



07 - AERIAL CABLE STRUCTURE 2A.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  262 Time(s)

07 - AERIAL CABLE STRUCTURE 2A.jpg



08 - AERIAL CABLE STRUCTURE 3 - OLD PHOTO.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

08 - AERIAL CABLE STRUCTURE 3 - OLD PHOTO.jpg



09 - AERIAL CABLE STRUCTURE 4 - WINDING MACHINES.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

09 - AERIAL CABLE STRUCTURE 4 - WINDING MACHINES.jpg



10 - CABECO DA PIAO MILL SITE 1.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  262 Time(s)

10 - CABECO DA PIAO MILL SITE 1.jpg



11 - CABECO DO PIAO MILL SITE 2.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

11 - CABECO DO PIAO MILL SITE 2.jpg



12 - CABECO DO PIAO MILL SITE 3.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

12 - CABECO DO PIAO MILL SITE 3.jpg



13 - CABECO DO PIAO MILL SITE 5.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

13 - CABECO DO PIAO MILL SITE 5.jpg



14 - CABECO DO PIAO MILL SITE 6 - POWER SUB-STATION.jpg
 Mineral: _
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Description:
 Viewed:  261 Time(s)

14 - CABECO DO PIAO MILL SITE 6 - POWER SUB-STATION.jpg


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silvia




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PostPosted: Nov 28, 2021 14:35    Post subject: Fluorapatite - Silvia's Collection  

Glassy partly gemmy green color zoned tabular crystals of Fluorapatite to 2 cm in size with crystallized Quartz and Arsenopyrite.

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



01 - FLUORAPATITE WITH QUARTZ.jpg
 Mineral: Fluorapatite, Quartz, Muscovite, Arsenopyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 4 cm x 3 cm
 Description:
green color zoned tabular crystals
 Viewed:  142 Time(s)

01 - FLUORAPATITE WITH QUARTZ.jpg



02 - FLUORAPATITE WITH QUARTZ.jpg
 Mineral: Fluorapatite, Quartz, Muscovite, Arsenopyrite
 Locality:
Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro, Portugal
 Dimensions: 8 cm x 4 cm x 3 cm
 Description:
Detail of the crystals
 Viewed:  142 Time(s)

02 - FLUORAPATITE WITH QUARTZ.jpg


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