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Quelques-uns des principaux sujets de Géoforum.

Bourse minéraux Sainte Marie aux Mines 2026, avec fossiles et gemmes.
▲ Bourse minéraux et fossiles de Sainte Marie aux Mines (Alsace) - 24>28 juin 2026 ▲

Principaux sujets de Géoforum.


Bourse minéraux Sainte Marie aux Mines 2026, avec fossiles et gemmes.
▲Bourse minéraux et fossiles de Sainte Marie aux Mines (Alsace)▲

Septaria quartz et sidérite Ribiers

sigoyer

By sigoyer

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From the album:

Septarias

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Photo Information

  • Taken with PENTAX Corporation PENTAX OptioE20
  • Focal Length 5.5 mm
  • Exposure Time 35941/1000000
  • f Aperture f/2.8
  • ISO Speed 100
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