diff --git a/mods/graphite.js b/mods/graphite.js
new file mode 100644
index 00000000..ceb5ec6c
--- /dev/null
+++ b/mods/graphite.js
@@ -0,0 +1,460 @@
+elements.graphite = {
+    color: "#4d4f4f",
+    behavior: behaviors.POWDER,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.26,
+    tempHigh: 3600,
+    stateHigh: "carbon_gas",
+    flammable: false,
+    reactions: {
+        "oxygen": { elem1: "carbon_dioxide", elem2: null, tempMin: 700 },
+        "fire": { elem1: "carbon_monoxide", elem2: null, tempMin: 700 },
+        "fluorine": { elem1: "carbon_tetrafluoride", elem2: null },
+        "silicon_dioxide": { elem1: "silicon", elem2: "carbon_monoxide", tempMin: 1700 }
+    }
+};
+
+/* Carbon (solid) */
+elements.carbon = {
+    color: "#7a7d7d",
+    behavior: behaviors.POWDER,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.2,
+    tempHigh: 3600,
+    stateHigh: "carbon_gas",
+    flammable: false,
+    reactions: {
+        "oxygen": { elem1: "carbon_dioxide", elem2: null, tempMin: 700 },
+        "fire": { elem1: "carbon_monoxide", elem2: null, tempMin: 700 },
+        "fluorine": { elem1: "carbon_tetrafluoride", elem2: null },
+        "silicon_dioxide": { elem1: "silicon", elem2: "carbon_monoxide", tempMin: 1700 }
+    }
+};
+
+/* Carbon gas (vapor) */
+elements.carbon_gas = {
+    color: "#666666",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 0.0018,
+    reactions: {
+        "oxygen": { elem1: "carbon_monoxide", elem2: null },
+        "fluorine": { elem1: "carbon_tetrafluoride", elem2: null },
+        "hydrogen": { elem1: "hydrocarbon_gas", elem2: null, tempMin: 1200 },
+        "silicon": { elem1: "silicon_carbide", elem2: null, tempMin: 1400 }
+    }
+};
+
+/* Hydrocarbon gas (generic hydrocarbon product placeholder) */
+elements.hydrocarbon_gas = {
+    color: "#ffdca3",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 0.7,
+    reactions: {
+        "oxygen": { elem1: "carbon_dioxide", elem2: "water" },
+        "fire": { elem1: "carbon_dioxide", elem2: "water" },
+        "fluorine": { elem1: "carbon_tetrafluoride", elem2: "hydrogen_fluoride" },
+        "water": { elem1: "water", elem2: null }
+    }
+};
+
+/* Carbon monoxide */
+elements.carbon_monoxide = {
+    color: "#bfbfbf",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 1.145,
+    reactions: {
+        "oxygen": { elem1: "carbon_dioxide", elem2: null },
+        "fire": { elem1: "carbon_dioxide", elem2: null },
+        "iron_oxide": { elem1: "iron", elem2: "carbon_dioxide", tempMin: 800 },
+        "fluorine": { elem1: "carbonyl_fluoride", elem2: null }
+    }
+};
+
+/* Carbonyl fluoride (COF2) */
+elements.carbonyl_fluoride = {
+    color: "#cfeef0",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 2.5,
+    reactions: {
+        "water": { elem1: "carbon_dioxide", elem2: "hydrogen_fluoride" },
+        "fire": { elem1: "carbon_dioxide", elem2: "fluorine" },
+        "hydrofluoric_acid": { elem1: "hydrogen_fluoride", elem2: "carbon_dioxide" },
+        "oxygen": { elem1: "carbon_dioxide", elem2: "fluorine" }
+    }
+};
+
+/* Fluorine */
+elements.fluorine = {
+    color: "#b5e61d",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 1.696,
+    temp: 25,
+    flammable: false,
+    reactions: {
+        "graphite": { elem1: "carbon_tetrafluoride", elem2: null },
+        "carbon": { elem1: "carbon_tetrafluoride", elem2: null },
+        "hydrogen": { elem1: "hydrogen_fluoride", elem2: null },
+        "water": { elem1: "hydrogen_fluoride", elem2: "oxygen" },
+        "silicon": { elem1: "silicon_tetrafluoride", elem2: null }
+    }
+};
+
+/* Carbon tetrafluoride (CF4) */
+elements.carbon_tetrafluoride = {
+    color: "#ccffff",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 3.72,
+    flammable: false,
+    reactions: { 
+        "fire": { elem1: "carbon_dioxide", elem2: "fluorine", tempMin: 2000 },
+        "silicon": { elem1: "silicon_tetrafluoride", elem2: "carbon", tempMin: 900 },
+        "molten_silicon": { elem1: "silicon_tetrafluoride", elem2: "carbon", tempMin: 900 },
+        "silicon_dioxide": { elem1: "silicon_tetrafluoride", elem2: "carbon_monoxide", tempMin: 1500 }
+    }
+};
+
+/* Hydrogen fluoride (gas) */
+elements.hydrogen_fluoride = {
+    color: "#e0ffff",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 0.98,
+    temp: 25,
+    flammable: false,
+    reactions: {
+        "water": { elem1: "hydrofluoric_acid", elem2: null },
+        "silicon_dioxide": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "calcium_carbonate": { elem1: "calcium_fluoride", elem2: "carbon_dioxide" },
+        "calcium_hydroxide": { elem1: "calcium_fluoride", elem2: "water" }
+    }
+};
+
+/* Hydrofluoric acid (aqueous HF) */
+elements.hydrofluoric_acid = {
+    color: "#66ccff",
+    behavior: behaviors.LIQUID,
+    category: "GraphiteMod",
+    state: "liquid",
+    density: 1.15,
+    tempLow: -83,
+    stain: "#99ddff",
+    reactions: {
+        "glass": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "sand": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "silicon_dioxide": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "calcium_carbonate": { elem1: "calcium_fluoride", elem2: "carbon_dioxide" },
+        "calcium_hydroxide": { elem1: "calcium_fluoride", elem2: "water" }
+    }
+};
+
+/* Silicon tetrafluoride */
+elements.silicon_tetrafluoride = {
+    color: "#e6ffff",
+    behavior: behaviors.GAS,
+    category: "GraphiteMod",
+    state: "gas",
+    density: 1.66,
+    flammable: false,
+    reactions: {
+        "water": { elem1: "hydrofluoric_acid", elem2: "silicon_dioxide" },
+        "sand": { elem1: "hydrofluoric_acid", elem2: "silicon_dioxide" },
+        "glass": { elem1: "hydrofluoric_acid", elem2: "silicon_dioxide" },
+        "calcium_hydroxide": { elem1: "calcium_fluoride", elem2: "hydrofluoric_acid" }
+    }
+};
+
+/* Silicon (solid) */
+elements.silicon = {
+    color: "#9a9a9a",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.33,
+    tempHigh: 1414,
+    stateHigh: "molten_silicon",
+    flammable: false,
+    reactions: {
+        "oxygen": { elem1: "silicon_dioxide", elem2: null, tempMin: 500 },
+        "fluorine": { elem1: "silicon_tetrafluoride", elem2: null },
+        "hydrofluoric_acid": { elem1: "silicon_tetrafluoride", elem2: null },
+        "carbon_tetrafluoride": { elem1: "silicon_tetrafluoride", elem2: "carbon", tempMin: 900 }
+    }
+};
+
+elements.molten_silicon = {
+    color: "#ffb366",
+    behavior: behaviors.LIQUID,
+    category: "GraphiteMod",
+    state: "liquid",
+    density: 2.5,
+    temp: 1414,
+    stateLow: "silicon",
+    reactions: {
+        "oxygen": { elem1: "silicon_dioxide", elem2: null },
+        "fluorine": { elem1: "silicon_tetrafluoride", elem2: null },
+        "carbon_tetrafluoride": { elem1: "silicon_tetrafluoride", elem2: "carbon" },
+        "graphite": { elem1: "silicon_carbide", elem2: null, tempMin: 1500 }
+    }
+};
+
+/* Silicon dioxide (quartz / sand) */
+elements.silicon_dioxide = {
+    color: "#f2f2f2",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.65,
+    tempHigh: 1710,
+    stateHigh: "molten_silicon_dioxide",
+    flammable: false,
+    reactions: {
+        "hydrofluoric_acid": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "hydrogen_fluoride": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "graphite": { elem1: "silicon", elem2: "carbon_monoxide", tempMin: 1700 },
+        "carbon": { elem1: "silicon", elem2: "carbon_monoxide", tempMin: 1700 }
+    }
+};
+
+elements.molten_silicon_dioxide = {
+    color: "#ffcc99",
+    behavior: behaviors.LIQUID,
+    category: "GraphiteMod",
+    state: "liquid",
+    density: 2.3,
+    temp: 1710,
+    stateLow: "silicon_dioxide",
+    flammable: false,
+    reactions: {
+        "hydrofluoric_acid": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "hydrogen_fluoride": { elem1: "silicon_tetrafluoride", elem2: "water" },
+        "graphite": { elem1: "silicon", elem2: "carbon_monoxide", tempMin: 1700 },
+        "carbon": { elem1: "silicon", elem2: "carbon_monoxide", tempMin: 1700 }
+    }
+};
+
+/* Calcium carbonate (limestone) */
+elements.calcium_carbonate = {
+    color: "#fffccc",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.71,
+    flammable: false,
+    reactions: {
+        "acid": { elem1: "carbon_dioxide", elem2: "water" },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: "carbon_dioxide" },
+        "hydrogen_fluoride": { elem1: "calcium_fluoride", elem2: "carbon_dioxide" },
+        "fire": { elem1: "calcium_oxide", elem2: "carbon_dioxide", tempMin: 850 }
+    }
+};
+
+/* Calcium oxide (quicklime) */
+elements.calcium_oxide = {
+    color: "#fafafa",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 3.34,
+    tempHigh: 2572,
+    stateHigh: "molten_calcium_oxide",
+    reactions: {
+        "water": { elem1: "calcium_hydroxide", elem2: null },
+        "carbon_dioxide": { elem1: "calcium_carbonate", elem2: null },
+        "hydrogen_fluoride": { elem1: "calcium_fluoride", elem2: "water" },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: "water" }
+    }
+};
+
+elements.molten_calcium_oxide = {
+    color: "#f0e6cc",
+    behavior: behaviors.LIQUID,
+    category: "GraphiteMod",
+    state: "liquid",
+    density: 3.0,
+    temp: 2572,
+    stateLow: "calcium_oxide",
+    reactions: {
+        "water": { elem1: "calcium_hydroxide", elem2: null },
+        "carbon_dioxide": { elem1: "calcium_carbonate", elem2: null },
+        "hydrogen_fluoride": { elem1: "calcium_fluoride", elem2: "water" },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: "water" }
+    }
+};
+
+/* Calcium hydroxide (slaked lime) */
+elements.calcium_hydroxide = {
+    color: "#f9fff9",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.21,
+    flammable: false,
+    reactions: {
+        "carbon_dioxide": { elem1: "calcium_carbonate", elem2: "water" },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: "water" },
+        "hydrogen_fluoride": { elem1: "calcium_fluoride", elem2: "water" },
+        "silicon_tetrafluoride": { elem1: "calcium_fluoride", elem2: "hydrofluoric_acid" }
+    }
+};
+
+/* Calcium fluoride (fluorspar) */
+elements.calcium_fluoride = {
+    color: "#ccccff",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 3.18,
+    flammable: false,
+    reactions: {
+        "acid": { elem1: "hydrofluoric_acid", elem2: "calcium_sulfate" },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: null },
+        "hydrogen_fluoride": { elem1: "calcium_fluoride", elem2: null },
+        "molten_silicon_dioxide": { elem1: "calcium_silicate", elem2: null }
+    }
+};
+
+/* Calcium silicate (simple placeholder for Ca-silicates) */
+elements.calcium_silicate = {
+    color: "#ddd8cc",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.9,
+    flammable: false,
+    reactions: {
+        "acid": { elem1: "calcium_fluoride", elem2: "silicon_tetrafluoride" },
+        "water": { elem1: "calcium_hydroxide", elem2: "silicon_dioxide" },
+        "fire": { elem1: "molten_calcium_silicate", elem2: null, tempMin: 1400 },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: "silicon_tetrafluoride" }
+    }
+};
+
+elements.molten_calcium_silicate = {
+    color: "#f0e6cc",
+    behavior: behaviors.LIQUID,
+    category: "GraphiteMod",
+    state: "liquid",
+    density: 2.9,
+    temp: 1400,
+    stateLow: "calcium_silicate",
+    flammable: false
+};
+
+/* Calcium sulfate (gypsum/anhydrite) */
+elements.calcium_sulfate = {
+    color: "#e6e6e6",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.96,
+    flammable: false,
+    reactions: {
+        "water": { elem1: "gypsum", elem2: null },
+        "carbon": { elem1: "calcium_sulfide", elem2: "carbon_dioxide", tempMin: 1200 },
+        "hydrofluoric_acid": { elem1: "calcium_fluoride", elem2: "acid" },
+        "hydrogen_fluoride": { elem1: "calcium_fluoride", elem2: "acid" }
+    }
+};
+
+/* Gypsum (hydrated CaSO4) */
+elements.gypsum = {
+    color: "#f3f3f3",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.32,
+    flammable: false,
+    reactions: {
+        "fire": { elem1: "calcium_sulfate", elem2: "water", tempMin: 250 },
+        "acid": { elem1: "calcium_sulfate", elem2: "acid" },
+        "carbon": { elem1: "calcium_sulfide", elem2: "carbon_dioxide", tempMin: 1200 },
+        "water": { elem1: "gypsum", elem2: null }
+    }
+};
+
+/* Calcium sulfide (product of high-T reduction) */
+elements.calcium_sulfide = {
+    color: "#cfa76f",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 2.8,
+    flammable: false,
+    reactions: {
+        "water": { elem1: "hydrogen_sulfide", elem2: null },
+        "acid": { elem1: "hydrogen_sulfide", elem2: "calcium_fluoride" },
+        "fire": { elem1: "calcium_sulfide", elem2: null },
+        "carbon_dioxide": { elem1: "calcium_carbonate", elem2: "sulfur_dioxide" }
+    }
+};
+
+
+elements.silicon_carbide = {
+    color: "#2e2e2e",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 3.21,
+    tempHigh: 2730,
+    stateHigh: "molten_silicon_carbide",
+    reactions: {
+        "oxygen": { elem1: "silicon_dioxide", elem2: "carbon_dioxide", tempMin: 1000 },
+        "fluorine": { elem1: "silicon_tetrafluoride", elem2: "carbon_tetrafluoride", tempMin: 500 },
+        "hydrofluoric_acid": { elem1: "silicon_tetrafluoride", elem2: "carbon_tetrafluoride" },
+        "hydrogen_fluoride": { elem1: "silicon_tetrafluoride", elem2: "carbon_tetrafluoride" }
+    }
+};
+
+elements.molten_silicon_carbide = {
+    color: "#443f3f",
+    behavior: behaviors.LIQUID,
+    category: "GraphiteMod",
+    state: "liquid",
+    density: 3.2,
+    temp: 2730,
+    stateLow: "silicon_carbide",
+    flammable: false
+};
+
+/* Paper with graphite (drawing) */
+elements.paper_with_graphite = {
+    color: "#888888",
+    behavior: behaviors.SOLID,
+    category: "GraphiteMod",
+    state: "solid",
+    density: 0.8,
+    flammable: true,
+    reactions: {
+        "fire": { elem1: "ash", elem2: "smoke" },
+        "oxygen": { elem1: "ash", elem2: "smoke", tempMin: 300 },
+        "water": { elem1: "paper", elem2: null },
+        "hydrofluoric_acid": { elem1: "ash", elem2: "acid" }
+    }
+};
+
+elements.eraser = {
+    color: "#ffffff",
+    tool: function(pixel) {
+        if (pixel.element == "paper_with_graphite") {
+            pixel.element = "paper"
+            pixel.color = "#ffffff"
+        }
+    },
+    category: "tools",
+};
+