{
  "sulfur": {
    "name": "Sulfur",
    "category": "basic_chemical",
    "logistic_category": "resource",
    "density": 2.1,
    "stack_size": 100,
    "container_type": "chemical_powder",
    "ui": {
      "icon": "sulfur.png",
      "color": "#FFFF00",
      "map_color": "#FFD700",
      "particle_effect": "sulfur_dust"
    }
  },
  "phosphorus": {
    "name": "Phosphorus",
    "category": "reactive_chemical",
    "logistic_category": "resource",
    "density": 1.8,
    "stack_size": 50,
    "container_type": "reactive_chemical",
    "ui": {
      "icon": "phosphorus.png",
      "color": "#FF4500",
      "map_color": "#FF6347",
      "particle_effect": "phosphorus_glow"
    }
  },
  "potassium": {
    "name": "Potassium",
    "category": "alkali_metal",
    "logistic_category": "resource",
    "density": 0.9,
    "stack_size": 25,
    "container_type": "reactive_metal",
    "ui": {
      "icon": "potassium.png",
      "color": "#C0C0C0",
      "map_color": "#A9A9A9",
      "particle_effect": "metallic_shine"
    }
  },
  "sodium": {
    "name": "Sodium",
    "category": "alkali_metal",
    "logistic_category": "resource",
    "density": 1.0,
    "stack_size": 25,
    "container_type": "reactive_metal",
    "ui": {
      "icon": "sodium.png",
      "color": "#D3D3D3",
      "map_color": "#DCDCDC",
      "particle_effect": "sodium_shine"
    }
  },
  "magnesium": {
    "name": "Magnesium",
    "category": "alkaline_earth_metal",
    "logistic_category": "resource",
    "density": 1.7,
    "stack_size": 50,
    "container_type": "light_metal",
    "ui": {
      "icon": "magnesium.png",
      "color": "#F5F5F5",
      "map_color": "#E0E0E0",
      "particle_effect": "bright_metallic_dust"
    }
  },
  "calcium": {
    "name": "Calcium",
    "category": "alkaline_earth_metal",
    "logistic_category": "resource",
    "density": 1.5,
    "stack_size": 50,
    "container_type": "reactive_metal",
    "ui": {
      "icon": "calcium.png",
      "color": "#FFFAF0",
      "map_color": "#F0F8FF",
      "particle_effect": "calcium_dust"
    }
  }
}