File chemtool-1.6.11-mime.diff of Package chemtool
--- gnome/mime-types/chemtool.keys
+++ gnome/mime-types/chemtool.keys
@@ -1,4 +1,4 @@
application/chemtool:
open=chemtool %f
- icon-filename=/usr/share/pixmaps/mc/gnome-application-chemtool.png
+ icon-filename=/opt/gnome/share/pixmaps/gnome-application-chemtool.png