{
  "coal": {
    "name": "Coal",
    "category": "fossil_fuel",
    "logistic_category": "resource",
    "density": 1.3,
    "stack_size": 100,
    "container_type": "bulk_fuel",
    "energy_content_mj": 25,
    "ui": {
      "icon": "coal.png",
      "color": "#2F2F2F",
      "map_color": "#1C1C1C",
      "particle_effect": "coal_dust"
    }
  },
  "crude_oil": {
    "name": "Crude Oil",
    "category": "liquid_fuel",
    "logistic_category": "fluid",
    "density": 0.85,
    "stack_size": 0,
    "container_type": "liquid_fuel",
    "energy_content_mj": 42,
    "ui": {
      "icon": "crude_oil.png",
      "color": "#2F2F2F",
      "map_color": "#000000",
      "particle_effect": "oil_drops"
    }
  },
  "natural_gas": {
    "name": "Natural Gas",
    "category": "gaseous_fuel",
    "logistic_category": "fluid",
    "density": 0.0007,
    "stack_size": 0,
    "container_type": "pressurized_gas",
    "energy_content_mj": 55,
    "ui": {
      "icon": "natural_gas.png",
      "color": "#B0E0E6",
      "map_color": "#87CEEB",
      "particle_effect": "gas_wisps"
    }
  },
  "uranium_235": {
    "name": "Uranium-235",
    "category": "fissile_fuel",
    "logistic_category": "resource",
    "density": 19.1,
    "stack_size": 1,
    "container_type": "fissile_material",
    "energy_content_mj": 80000000,
    "ui": {
      "icon": "uranium_235.png",
      "color": "#00FF00",
      "map_color": "#32CD32",
      "particle_effect": "uranium_glow"
    }
  },
  "uranium_ore": {
    "name": "Uranium Ore",
    "category": "radioactive_ore",
    "logistic_category": "resource",
    "density": 19.1,
    "stack_size": 10,
    "container_type": "radioactive_ore",
    "processing_note": "Requires enrichment to produce Uranium-235",
    "ui": {
      "icon": "uranium_ore.png",
      "color": "#FFFF00",
      "map_color": "#FFD700",
      "particle_effect": "uranium_glow"
    }
  },
  "thorium_ore": {
    "name": "Thorium Ore",
    "category": "radioactive_ore",
    "logistic_category": "resource",
    "density": 11.7,
    "stack_size": 15,
    "container_type": "radioactive_ore",
    "processing_note": "Alternative nuclear fuel, requires breeder reactor",
    "ui": {
      "icon": "thorium_ore.png",
      "color": "#C0C0C0",
      "map_color": "#A9A9A9",
      "particle_effect": "thorium_radiation"
    }
  },
  "plutonium": {
    "name": "Plutonium",
    "category": "fissile_material",
    "logistic_category": "resource",
    "density": 19.8,
    "stack_size": 1,
    "container_type": "fissile_material",
    "energy_content_mj": 87000000,
    "processing_note": "Weapons-grade nuclear material",
    "ui": {
      "icon": "plutonium.png",
      "color": "#8B0000",
      "map_color": "#FF0000",
      "particle_effect": "plutonium_energy"
    }
  }
}