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Pedro Alves' Photo Gallery

Display panel

Palmeiras No. 2 quarry, Monchique, Monchique, Faro, Portugal

Display panel with the name of the quarry, his number, proprietary and security measures.

Copyright: © Pedro Alves      Photo ID: 924360     Uploaded by: Pedro Alves   View Count: 10   Approval status: Public galleries    Type: Photo - 2560 x 1920 pixels (4.9 Mpix)

EV0-5GKCerussite

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 5.6 mm

Part of a grayish cerusite crystals inside a corrosion cavity in galena.
Anglesite is also present, as well as covellite and sulphur, but not in the picture.
EDS analyzed.
Copyright: © Pedro Alves      Photo ID: 920070     Uploaded by: Pedro Alves   View Count: 14   Approval status: Public galleries    Type: Photo - 4608 x 3456 pixels (15.9 Mpix)

ERL-QY8Azurite

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 5.6 mm

Quartz vug filled with deep blue azurite crystals.
We can see a bluish white material between the azurite crystals, EDS data (not conclusive - possible higher Cu values due to the underneath azurite) suggest a phase chemically compatible with copper-bearing allophane or chrysocolla.
Copyright: © Pedro Alves      Photo ID: 920013     Uploaded by: Pedro Alves   View Count: 15   Approval status: Public galleries    Type: Photo - 4608 x 3456 pixels (15.9 Mpix)

1JY-VCYMalachite, Chrysocolla, Cerussite

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 5.6 mm

Malachite as very clear green fibers on chysocolla spheres. The bottom is composed by vibrant blue chrysocolla coating altered galena.
Also present cerusite as gemmy complex crystals.
All EDS analyzed.
Copyright: © Pedro Alves      Photo ID: 919996     Uploaded by: Pedro Alves   View Count: 27   Approval status: Public galleries    Type: Photo - 4608 x 3456 pixels (15.9 Mpix)

RQT-TJJLinarite, Quartz

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 2.8 mm

Group of linarite on quartz.
EDS analyzed.
Copyright: © Pedro Alves      Photo ID: 919986     Uploaded by: Pedro Alves   View Count: 18   Approval status: Public galleries    Type: Photo - 4550 x 3456 pixels (15.7 Mpix)

LCT-VTHLinarite

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 2.10 mm

Group of linarite crystals on quartz.
EDS analyzed.
Copyright: © Pedro Alves      Photo ID: 919799     Uploaded by: Pedro Alves   View Count: 43   Approval status: Public galleries    Type: Photo - 3456 x 2672 pixels (9.2 Mpix)

5MP-K7MLinarite, Quartz

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 5.6 mm

Numerous flat linarite crystals on quartz.
EDS analyzed.
Copyright: © Pedro Alves      Photo ID: 919798     Uploaded by: Pedro Alves   View Count: 24   Approval status: Public galleries    Type: Photo - 4608 x 3456 pixels (15.9 Mpix)

U4J-LU8Linarite

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 5.6 mm

Radial group of deep blue linarite crystals.
EDS analyzed.
Copyright: © Pedro Alves      Photo ID: 919454     Uploaded by: Pedro Alves   View Count: 62   Approval status: Public galleries    Type: Photo - 4608 x 3360 pixels (15.5 Mpix)

26K-N1ESulphur

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 1.04 mm

Group of poorly crystalized sulphur. This is a thin layer which was removed from a galena fracture: the sulphur was associated to covellite, which suggest that both are an alteration product of chalcopyrite. That was also observed in the sphalerite cracks.
The white spots are anglesite.

SEM image in EBSD mode.
Copyright: © Pedro Alves      Photo ID: 918681     Uploaded by: Pedro Alves   View Count: 15   Approval status: Public galleries    Type: Photo - 2048 x 1692 pixels (3.5 Mpix)

W4E-P4QPyromorphite

Olgas Mine, Castelo Branco, Mogadouro, Bragança, Portugal

Field of View: 1.15 mm

Group of pyromorphite crystals on cerussite.
The crystals show a marked zonation, suggesting an abrupt interruption of growth. Both, core and outer layers are chemically identical, at least within the limits of characterization by EDS.
SEM image in EBSD mode.
Copyright: © Pedro Alves      Photo ID: 918680     Uploaded by: Pedro Alves   View Count: 11   Approval status: Public galleries    Type: Photo - 2048 x 1648 pixels (3.4 Mpix)
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