FUCK YEAH MINERALOGY
A blog dedicated to minerals of all sorts.

Managed by Zoe and Lara
Banded Iron Formation With Tiger’s Eye (by Maitri)
Before oxygen was present in the atmosphere, iron existed as Fe2+, which was soluble in water.  As oxygen levels rose, it was oxidized to Fe3+, became insoluble, and dropped out of the water, forming these alternating layers of iron and chert, known as banded iron formations (BIFs).  They are a major source of magnetite (Fe3O4) and hematite (Fe2O3).
  1. Banded Iron Formation With Tiger’s Eye (by Maitri)

    Before oxygen was present in the atmosphere, iron existed as Fe2+, which was soluble in water.  As oxygen levels rose, it was oxidized to Fe3+, became insoluble, and dropped out of the water, forming these alternating layers of iron and chert, known as banded iron formations (BIFs).  They are a major source of magnetite (Fe3O4) and hematite (Fe2O3).

  1. 54 notesTimestamp: Sunday 2012/12/23 12:01:36Source: Flickr / maitribanded iron formationgeologyhematitemagnetitemineralogymineralschert
  1. souffrirprofondement reblogged this from talkingfreak
  2. talkingfreak reblogged this from as-true-as-troilus
  3. iamjennahamilton reblogged this from as-true-as-troilus
  4. jlennonlover reblogged this from as-true-as-troilus
  5. brightspots reblogged this from as-true-as-troilus
  6. thestrongestofthestrange reblogged this from as-true-as-troilus
  7. vilemoods reblogged this from as-true-as-troilus
  8. elevenoeight reblogged this from as-true-as-troilus
  9. as-true-as-troilus reblogged this from fuckyeahmineralogy
  10. sparklefunshine reblogged this from fuckyeahmineralogy
  11. sublimelymagnificent reblogged this from fuckyeahmineralogy
  12. 33blackbirds reblogged this from fuckyeahmineralogy
  13. woolybutt reblogged this from fuckyeahmineralogy
  14. rosespirit reblogged this from nauticalamity
  15. nauticalamity reblogged this from fuckyeahmineralogy
  16. peastore reblogged this from fuckyeahmineralogy
  17. badwolfwatson reblogged this from fuckyeahmineralogy
  18. canislupuslupus reblogged this from fuckyeahmineralogy
  19. zoethepeep reblogged this from fuckyeahmineralogy and added:
    look and them layers so sexy
  20. heveatsbeans reblogged this from fuckyeahmineralogy
  21. dakotared reblogged this from fuckyeahmineralogy and added:
    Nice bit of BIF :)
  22. 130lb-de-piel-y-huesos reblogged this from fuckyeahmineralogy
  23. mountainsinmoonlight reblogged this from fuckyeahmineralogy
  24. sniggles-and-fritz reblogged this from fuckyeahmineralogy
  25. runnerryan reblogged this from fuckyeahmineralogy
  26. krabiel reblogged this from fuckyeahmineralogy and added:
    BIFs BIFs are the fucking best