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| TABLE 3 | ||||||
| U.S. EXPORTS OF POTASH, BY TYPE1 | ||||||
| Approximate | Quantity | |||||
| average K2O | (metric tons) | |||||
| equivalent content | Gross | K2O | ||||
| (percentage) | weight | equivalente | ||||
| 2006: | ||||||
| Potassium chloride, all grades | 61 | 337,000 | 206,000 | |||
| Potassium sulfate | 51 | 75,400 | 38,400 | |||
| Potassium magnesium sulfate | 22 | 392,000 | 86,200 | |||
| Potassium nitrate | 45 | 3,750 | 1,690 | |||
| Total | XX | 809,000 | 332,000 | |||
| 2007: | ||||||
| Potassium chloride, all grades | 61 | 181,000 | 111,000 | |||
| Potassium sulfate | 51 | 51,300 | 26,200 | |||
| Potassium magnesium sulfate | 22 | 273,000 | 60,000 | |||
| Potassium nitrate | 45 | 4,670 | 2,100 | |||
| Total | XX | 510,000 | 199,000 | |||
| eEstimated. XX Not applicable. | ||||||
| 1Data are rounded to no more than three significant digits; may not add to totals shown. | ||||||
| Source: U.S. Census Bureau; data adjusted by the U.S. Geological Survey. | ||||||
Source: United States Geological Survey Mineral Resources Program