diff --git a/trimsp/src/TrimSPGUI/Chem.pm b/trimsp/src/TrimSPGUI/Chem.pm
index 7586837..06dd152 100644
--- a/trimsp/src/TrimSPGUI/Chem.pm
+++ b/trimsp/src/TrimSPGUI/Chem.pm
@@ -539,6 +539,8 @@ sub Densities {
     my %Densities = (
 		     "NbN",8.47,
 		     "Bi2Se3",7.51,
+                     "La2CuO4", 7.08,
+                     "La1.84Sr0.16CuO4", 6.94,
 		     "N2",1.145,
 		     "ZnO",5.61,
 		     "ZnSe",5.26,