diff --git a/doc/materials/groups/MATGROUP_GAS b/doc/materials/groups/MATGROUP_GAS
new file mode 100644
index 0000000..f1d2436
--- /dev/null
+++ b/doc/materials/groups/MATGROUP_GAS
@@ -0,0 +1,5 @@
+Gruppenid:
+MATGROUP_GAS
+
+Name:
+Gase