A world map shows iodine mining locations marked by purple circles with "I O." Key areas include the United States (Oklahoma, northern New Jersey) and the Atacama Desert in northern Chile.
Iodine Mines | Class | Rank | Percent | Oil Shale or Tar Sands | -0.25 to 0.25 | 0.75 to 1.0 | 1.0 to 1.25 | 1.25 to 1.5 | 1.5 to 1.75 | Class | Rank | Percent of electricity generation | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.4 | 11.5% | 0.311% | 1.20% | 0.159% | 0.444% | 2.10% | |||||||
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