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Landscape at Gestoso

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

29 Aug 2004

Copyright: © L&L Alves Photo ID: 123832 Uploaded by: Lisete Alves View Count: 2071 Status: Public galleries Type: Photo - 1600×1200 (1.9 Mpix)

ETH-2VG Staurolite Fe²⁺₂Al₉Si₄O₂₃(OH)

Freita Mountain, Arouca, Aveiro, Portugal

Copyright: © L&L Alves Photo ID: 20539 Uploaded by: Lisete Alves View Count: 1201 Status: Public galleries Type: Photo - 316×383 (0.1 Mpix)

X8Q-1MV Biotite K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

Freita Mountain, Arouca, Aveiro, Portugal

Biotite Nodule in granite ( Specimen collected at what is known as "Pedra Parideira", or Birthing stone. The local people give this name because the mother-rock (granite) seems to "give birth" expelling smaller rocks (the biotite nodules)

Copyright: © L&L Alves Photo ID: 20488 Uploaded by: Lisete Alves View Count: 1957 Status: Public galleries Type: Photo - 286×299 (0.1 Mpix)

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Landscape at Gestoso

ETH-2VGStaurolite Fe2+2Al9Si4O23(OH)

X8Q-1MVBiotite K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

ETH-2VG Staurolite Fe²⁺₂Al₉Si₄O₂₃(OH)

X8Q-1MV Biotite K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂