| Rank | Country | World Production, By Country (Metric tons) |
|---|
| 1 | Spain | 200,000 |  |
| 2 | China | 180,000 | |
| 3 | Mexico | 125,000 | |
| 4 | Turkey | 60,000 | |
| 5 | Argentina | 7,500 | |
| 6 | Iran, Islamic Republic Of | 7,500 | |
| 7 | Morocco | 2,700 | |
| 8 | Pakistan | 1,900 | |
Year of Estimate: 2006
Source: United States Geological Survey (USGS) Minerals Resources Program
