Copyright: © nuno afonso Photo ID: 135224 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 644 Status: Public galleries Type: Photo - 650×526 (0.3 Mpix)

X5F-M50 Willemite Zn₂SiO₄ , Cerussite PbCO₃

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal

Largest Crystal Size: 11 mm

This sample shows a pseudomorph of willemite after cerussite.
Cerussite crystals up to 11 mm.

Copyright: © nuno afonso Photo ID: 135220 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 524 Status: Public galleries Type: Photo - 700×566 (0.4 Mpix)

6TD-YVC Pyrolusite Mn⁴⁺O₂

Serra da Mina Mine, Cercal do Alentejo, Santiago do Cacém, Setúbal, Portugal

A group of pyrolusite clusters.
Clusters size: ~6mm.

Copyright: © nuno afonso Photo ID: 135219 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 486 Status: Public galleries Type: Photo - 650×529 (0.3 Mpix)

GFC-AK4 Pyrolusite Mn⁴⁺O₂ , Quartz SiO₂

Serra da Mina Mine, Cercal do Alentejo, Santiago do Cacém, Setúbal, Portugal

Dimensions: 28 mm

A group of quartz micro-crystals growing over pyrolusite clusters.
Specimen size: 28 mm.

Copyright: © nuno afonso Photo ID: 135218 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 495 Status: Public galleries Type: Photo - 650×439 (0.3 Mpix)

1Q8-108 Quartz SiO₂ , Pyrite FeS₂ , Carminite PbFe³⁺₂(AsO₄)₂(OH)₂

Alto das Quelhas do Gestoso Mine, Gestoso, Manhouce, São Pedro do Sul, Viseu, Portugal

Largest Crystal Size: 7 mm

Quartz crystals growing on pyrite crystals. We also can see some carminite and scorodite. Pyrite crystal measures 7 mm.

Copyright: © nuno afonso Photo ID: 135216 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 692 Status: Public galleries Type: Photo - 700×546 (0.4 Mpix)

VN3-23K Natrolite Na₂Al₂Si₃O₁₀·2H₂O , Thomsonite Subgroup

Lomba dos Pianos quarry, Magoito, São João das Lampas e Terrugem, Sintra, Lisbon, Portugal

A sample of natrolite (the orange radial terminations) and thomsonite (the centers), measuring 58mm.

Copyright: © nuno afonso Photo ID: 135212 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 463 Status: Public galleries Type: Photo - 650×449 (0.3 Mpix)

EXY-QHP Wavellite Al₃(PO₄)₂(OH,F)₃·5H₂O , Natrodufrénite NaFe²⁺Fe³⁺₅(PO₄)₄(OH)₆·2H₂O

Rebentão Mine, Lagares do Estanho Mines, Queiriga, Vila Nova de Paiva, Viseu, Portugal

Largest Crystal Size: 1 mm

Small crystals of wavellite and natrodufrénite on albite.
Crystals up to 1 mm.

Copyright: © nuno afonso Photo ID: 135209 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 700 Status: Public galleries Type: Photo - 700×575 (0.4 Mpix)

07V-EXU Molybdenite MoS₂

Cubos-Mesquitela-Mangualde area, Mangualde, Mangualde, Viseu, Portugal

Dimensions: 55 mm

Molybdenite on quartz. The sample was found near the train station at Mangualde.
Specimen size: 55 mm.

Copyright: © nuno afonso Photo ID: 135206 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 597 Status: Public galleries Type: Photo - 650×537 (0.3 Mpix)

JHR-4CD Goethite α-Fe³⁺O(OH)

Serra da Mina Mine, Cercal do Alentejo, Santiago do Cacém, Setúbal, Portugal

Goethite specimen measuring: 61mm.

Copyright: © nuno afonso Photo ID: 135202 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 776 Status: Public galleries Type: Photo - 700×542 (0.4 Mpix)

U5P-G25 Calcite CaCO₃ , Willemite Zn₂SiO₄

Preguiça Mine, Sobral da Adiça, Moura, Beja, Portugal

Dimensions: 48 mm

Calcite and small willemite crystals on goethite.
Specimen size: 48 mm.

Copyright: © nuno afonso Photo ID: 135201 Uploaded by: Nuno Afonso Upload date: 2007-11-23 View Count: 453 Status: Public galleries Type: Photo - 650×554 (0.4 Mpix)

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