|
| TABLE 3 | ||||
| AVERAGE VALUE PER METRIC TON OF DIATOMITE, | ||||
| BY MAJOR USE1 | ||||
| 2006 | 2007 | |||
| Absorbents | $37 | $41 | ||
| Cement2 | 3 | 9 | ||
| Fillers | 395 | 438 | ||
| Filtration | 264 | 352 | ||
| Insulation | 44 | 49 | ||
| Other3 | 932 | 230 | ||
| Weighted average | 220 | 237 | ||
| 1Rounded estimates. | ||||
| 2As ingredient in portland cement.�� | ||||
| 3Includes abrasives, lightweight aggregates, and unspecified uses. | ||||
Source: United States Geological Survey Mineral Resources Program