DescriptionHematite-rich BIF ventifact.jpg English: BIF ventifact (hematite-rich banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming...
DescriptionBIF ventifact,Windy Gap, Wyoming.jpg Hematite-rich BIF ventifact from Wyoming, USA. (~5.9 cm across at its widest) Ventifacts are lustrous...
DescriptionBIF ventifact (hematite-rich banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 3 (26078544495).jpg Hematite-rich BIF ventifact...
DescriptionBIF ventifact (hematite-rich banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 2 (26052629496).jpg Hematite-rich BIF ventifact...
DescriptionBIF ventifact (hematite-rich banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 4 (25986018282).jpg Hematite-rich BIF ventifact...
DescriptionBIF ventifact (limonite-magnetite banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 3 (25473779214).jpg Limonite-magnetite...
DescriptionBIF ventifact (limonite-magnetite banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 2 (25475973503).jpg Limonite-magnetite...
DescriptionBIF ventifact (limonite-magnetite banded iron formation, Archean; Ferris Dune Field, Windy Gap, Wyoming, USA) 1 (26052651216).jpg Limonite-magnetite...