Quelques-uns des principaux sujets de Géoforum
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Martite hematite
Pseudomorphose de magnétite en hématite. Var martite. Cordoba, Patagonie, Argentine. 45 mm.
Photo Information
- Taken with SAMSUNG GT-N7100
- Focal Length 3.7 mm
- Exposure Time 1/25
- f Aperture f/2.6
- ISO Speed 125



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