rock specimen (IMAGE)
Caption
Metamorphosed banded iron formation from southern Wyoming showing fine lamination. The rock is approximately 2.7 billion years old. Dark bands are iron oxides (magnetite, hematite) and red-orange bands are chert with iron oxide inclusions (jasper).
Credit
(Photo by Linda Welzenbach-Fries/Rice University)
Usage Restrictions
Must credit Linda Welzenbach-Fries/Rice University.
License
Original content