{
  "base_metal_resources": {
    "tin_placer": {
      "display_name": "Tin Placer",
      "description": "Cassiterite deposits concentrated in alluvial gravels and beach sands",
      "formation_type": "alluvial_tin_concentration",
      "extraction_difficulty": "easy",
      "budget_impact": 3,
      "resource_yield": "medium",
      "quality": "standard"
    },
    "tin_lode": {
      "display_name": "Tin Lode",
      "description": "Primary cassiterite ore in granite-related veins and greisen",
      "formation_type": "granitic_tin_mineralization",
      "extraction_difficulty": "hard",
      "budget_impact": 4,
      "resource_yield": "high",
      "quality": "premium"
    },
    "lead_galena": {
      "display_name": "Lead Galena",
      "description": "Primary lead sulfide ore often associated with silver and zinc",
      "formation_type": "sulfide_mineralization",
      "extraction_difficulty": "medium",
      "budget_impact": 3,
      "resource_yield": "high",
      "quality": "standard"
    },
    "lead_carbonate": {
      "display_name": "Lead Carbonate",
      "description": "Weathered lead ore with cerussite and anglesite minerals",
      "formation_type": "lead_oxidation_zone",
      "extraction_difficulty": "easy",
      "budget_impact": 2,
      "resource_yield": "medium",
      "quality": "standard"
    },
    "nickel_laterite": {
      "display_name": "Nickel Laterite",
      "description": "Tropical weathering deposit with garnierite and limonite nickel ores",
      "formation_type": "laterite_nickel_weathering",
      "extraction_difficulty": "medium",
      "budget_impact": 4,
      "resource_yield": "high",
      "quality": "standard"
    },
    "nickel_sulfide": {
      "display_name": "Nickel Sulfide",
      "description": "Primary nickel ore with pentlandite in mafic intrusions",
      "formation_type": "magmatic_sulfide_segregation",
      "extraction_difficulty": "hard",
      "budget_impact": 5,
      "resource_yield": "medium",
      "quality": "premium"
    }
  }
}