diff --git a/changelog.txt b/changelog.txt
index b05da67..7cf0c08 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,3 +1,5 @@
+2014-06-13: Added mtz slate texture.
+
 2014-06-10: New minetest_game and multiplayer/client-mode menu overlay 
 images to match current state of HDX.
 
diff --git a/image-credits.txt b/image-credits.txt
index a710ce7..bd61670 100644
--- a/image-credits.txt
+++ b/image-credits.txt
@@ -1133,6 +1133,7 @@ http://www.clker.com/clipart-boot-print.html
 http://en.wikipedia.org/wiki/File:Z-1_Spacesuit_Prototype_-_standing_Nov_2012.jpg
 http://www.nasa.gov/pdf/712209main_11-12__Technology.pdf (the PLSS on the right on page 15)
 
-orichalcum mod
---------------
+orichalcum/mtz mod
+------------------
 http://commons.wikimedia.org/wiki/File:Drystone_wall_tileable_1024x1024.jpg
+http://commons.wikimedia.org/wiki/File:MarcellusShaleCloseUp.jpg
diff --git a/mtz_slate_native.jpg b/mtz_slate_native.jpg
new file mode 100644
index 0000000..1508673
Binary files /dev/null and b/mtz_slate_native.jpg differ