{
  "rare_metal_resources": {
    "tungsten_vein": {
      "display_name": "Tungsten Vein",
      "description": "High-grade tungsten ore in quartz veins with scheelite and wolframite",
      "formation_type": "hydrothermal_tungsten_precipitation",
      "extraction_difficulty": "very_hard",
      "budget_impact": 6,
      "resource_yield": "medium",
      "quality": "premium"
    },
    "molybdenum_porphyry": {
      "display_name": "Molybdenum Porphyry",
      "description": "Molybdenum sulfide in large porphyry copper systems",
      "formation_type": "porphyry_molybdenum_system",
      "extraction_difficulty": "very_hard",
      "budget_impact": 5,
      "resource_yield": "medium",
      "quality": "premium"
    },
    "chromite_deposit": {
      "display_name": "Chromite Deposit",
      "description": "Chromium-iron oxide ore in layered mafic intrusions",
      "formation_type": "layered_mafic_intrusion",
      "extraction_difficulty": "hard",
      "budget_impact": 4,
      "resource_yield": "high",
      "quality": "standard"
    },
    "antimony_vein": {
      "display_name": "Antimony Vein",
      "description": "Stibnite ore in hydrothermal veins with mercury associations",
      "formation_type": "epithermal_antimony_vein",
      "extraction_difficulty": "medium",
      "budget_impact": 3,
      "resource_yield": "medium",
      "quality": "standard"
    },
    "cobalt_arsenide": {
      "display_name": "Cobalt Arsenide",
      "description": "Cobalt-arsenic minerals in hydrothermal deposits with silver traces",
      "formation_type": "hydrothermal_cobalt_precipitation",
      "extraction_difficulty": "hard",
      "budget_impact": 4,
      "resource_yield": "low",
      "quality": "premium"
    },
    "iridium_placer": {
      "display_name": "Iridium Placer",
      "description": "Ultra-rare platinum group metal in alluvial concentrations",
      "formation_type": "alluvial_pge_concentration",
      "extraction_difficulty": "very_hard",
      "budget_impact": 7,
      "resource_yield": "very_low",
      "quality": "premium"
    },
    "lithium_pegmatite": {
      "display_name": "Lithium Pegmatite",
      "description": "Spodumene-bearing granite pegmatite with lithium silicate minerals",
      "formation_type": "granitic_pegmatite",
      "extraction_difficulty": "hard",
      "budget_impact": 4,
      "resource_yield": "medium",
      "quality": "premium"
    },
    "lithium_brine": {
      "display_name": "Lithium Brine",
      "description": "Salt lake brines with concentrated lithium chloride solutions",
      "formation_type": "evaporite_lithium_concentration",
      "extraction_difficulty": "medium",
      "budget_impact": 3,
      "resource_yield": "high",
      "quality": "standard"
    }
  }
}