diff --git a/mods/obsidian.js b/mods/obsidian.js
new file mode 100644
index 00000000..929e0050
--- /dev/null
+++ b/mods/obsidian.js
@@ -0,0 +1,29 @@
+elements.obsidian = {
+	color: ["#343434", "#313639"],
+	behavior: behaviors.SOLID,
+	category: "solids",
+	state: "solid",
+    reactions: {
+        "sand": { elem1: "obsidian_shard" },
+        "dirt": { elem1: "obsidian_shard" },
+        "rock": { elem1: "obsidian_shard" },
+        "mudstone": { elem1: "obsidian_shard" },
+        "packed_snow": { elem1: "obsidian_shard" },
+        "gravel": { elem1: "obsidian_shard" },
+        "clay": { elem1: "obsidian_shard" },
+        "clay_soil": { elem1: "obsidian_shard" },
+        "permafrost": { elem1: "obsidian_shard" },
+        "mulch": { elem1: "obsidian_shard" },
+        "basalt": { elem1: "obsidian_shard" },
+        "tuff": { elem1: "mud" },
+        "limestone": { elem1: "obsidian_shard" },
+        "quicklime": { elem1: "obsidian_shard" },
+        "slaked_lime": { elem1: "obsidian_shard" },
+        }
+    },
+    elements.obsidian_shard = {
+	color: ["#343434" , "#313639"],
+	behavior: behaviors.POWDER,
+	category: "powders",
+	state: "solid",
+    }
\ No newline at end of file