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. 35 notesTimestamp: Sunday 2012/12/23 12:01:36Source: Flickr / maitribanded iron formationgeologyhematitemagnetitemineralogymineralschert
  1. sparklefunshine reblogged this from fuckyeahmineralogy
  2. sublimelymagnificent reblogged this from fuckyeahmineralogy
  3. 33blackbirds reblogged this from fuckyeahmineralogy
  4. woolybutt reblogged this from fuckyeahmineralogy
  5. rosespirit reblogged this from nauticalamity
  6. nauticalamity reblogged this from fuckyeahmineralogy
  7. peastore reblogged this from fuckyeahmineralogy
  8. badwolfwatson reblogged this from fuckyeahmineralogy
  9. canislupuslupus reblogged this from fuckyeahmineralogy
  10. zoethepeep reblogged this from fuckyeahmineralogy and added:
    look and them layers so sexy
  11. heveatsbeans reblogged this from fuckyeahmineralogy
  12. dakotared reblogged this from fuckyeahmineralogy and added:
    Nice bit of BIF :)
  13. 130lb-de-piel-y-huesos reblogged this from fuckyeahmineralogy
  14. mountainsinmoonlight reblogged this from fuckyeahmineralogy
  15. sniggles-and-fritz reblogged this from fuckyeahmineralogy
  16. runnerryan reblogged this from fuckyeahmineralogy
  17. krabiel reblogged this from fuckyeahmineralogy and added:
    BIFs BIFs are the fucking best
  18. fuckyeahmineralogy posted this