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 | -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 | Alexandra Falls | Athabasca Falls | Baileys Chute | Celilo Falls | Cohoes Falls | Cumberland Falls | Great Falls | Kettle Falls | Kootenai Falls | Little Falls | Louise Falls | Marcus Falls | Niagara Falls | Osprey Falls | Rearguard Falls | Sandstone Falls | Sherars Falls | Vermilion Falls | Virginia Falls | Waterloo Falls | Willamette Falls | 4.50–4.59 pH | 4.60–4.69 pH | 4.70–4.79 pH | 4.80–4.89 pH | 4.90–4.99 pH | 5.00–5.09 pH | 5.10–5.19 pH | 5.20–5.29 pH | ≥5.30 pH | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.4 | 0.311% | 1.20% | 0.159% | 0.444% | 2.10% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4.29% | 14.4% | 23.8% | 24.2% | 18.5% | 16.1% | 11.6% | 6.63% | 81.6% | ||||
0.16.0