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| TABLE 3 | ||||
| PRICES OF IMPORTED FLUORSPAR | ||||
| (Dollars per metric ton) | ||||
| Source and grade | 2006 | 2007 | ||
| Acidspar: | ||||
| Chinese, dry basis, cost, insurance, and freight (c.i.f.) Gulf port, filtercake | 230-240 | 305-310 | ||
| Mexican, free on board (f.o.b.) Tampico, filtercake | 180-200 | 180-200 | ||
| Mexican, f.o.b. Tampico, arsenic <5 parts per million | 210-220 | 210-220 | ||
| South African, f.o.b. Durban, filtercake | 160-204 | 175-204 | ||
| Metspar, Mexican, c.i.f. port of U.S. entry, metspar1 | 111 | 110 | ||
| 1Metspar prices are the average value per metric ton of imported Mexican metspar for the fourth quarter | ||||
| calculated from the U.S. Census Bureau statistics. | ||||
| Sources: Industrial Minerals, no. 471, December 2006, p. 74; no. 483, December 2007, p. 76. | ||||
Source: United States Geological Survey Mineral Resources Program