8 lines
241 B
Plaintext
8 lines
241 B
Plaintext
|
= BIF =
|
||
|
|
|
||
|
|
BIF or Banded Iron formations are the
|
||
|
|
*most commonly mined from sedimentary ores with iron*.
|
||
|
|
|
||
|
|
It consists of banded grey layers of iron oxide banded with red [[chert]].
|
||
|
|
They formed when the first organzisms where photosynthisizing.
|