diff --git a/index.wiki b/index.wiki
index 2579e58..faaf086 100644
--- a/index.wiki
+++ b/index.wiki
@@ -56,6 +56,7 @@ _Ideas.md and Classes.md are encrypted, so these links will not work_
 * [[sci/chemistry|Chemistry]]
 * [[sci/physics|Physics]]
 * [[sci/biology|Biology]]
+* [[sci/geology|Geology]]
 * [[sci/chemicals/index|Chemicals]]
 
 == [[botany/index|Botany]] ==
diff --git a/sci/BIF.wiki b/sci/BIF.wiki
new file mode 100644
index 0000000..ffd0e00
--- /dev/null
+++ b/sci/BIF.wiki
@@ -0,0 +1,7 @@
+= 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.
diff --git a/sci/chert.wiki b/sci/chert.wiki
new file mode 100644
index 0000000..d9dcdb6
--- /dev/null
+++ b/sci/chert.wiki
@@ -0,0 +1 @@
+= Chert =
diff --git a/sci/geology.wiki b/sci/geology.wiki
new file mode 100644
index 0000000..5dae744
--- /dev/null
+++ b/sci/geology.wiki
@@ -0,0 +1,11 @@
+= Geology =
+
+The study of rocks and the earth's natural processes
+
+== Ores ==
+
+=== Iron ===
+
+* [[BIF]]
+
+=== Copper ===