Scientific Investigations Report 2007-5039
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007-5039
Table 2. Estimated amounts of contained metal and mineralized rock (metric tons) in porphyry copper deposits in tract BCAK.
[EMINERS index: 68 (BC-AK porphyry Cu 17.1). Mean number of deposits = 8.1. Abbreviations: Cu, copper; Mo, molybdenum; Au, gold; Ag, silver]
| Quantile | Cu | Mo | Au | Ag | Rock |
|---|---|---|---|---|---|
| 0.95 | 260,000 | 190 | 0.1 | 0 | 69,000,000 |
| 0.90 | 910,000 | 8,600 | 9 | 48 | 240,000,000 |
| 0.50 | 4,500,000 | 140,000 | 210 | 1,400 | 1,300,000,000 |
| 0.10 | 12,000,000 | 500,000 | 684 | 4,900 | 3,400,000,000 |
| 0.05 | 14,000,000 | 660,000 | 850 | 6,200 | 3,900,000,000 |
| Mean | 5,500,000 | 210,000 | 290 | 2,000 | 1,600,000,000 |
| Probability of mean | 0.41 | 0.36 | 0.39 | 0.37 | 0.42 |
| Probability of zero | 0.03 | 0.05 | 0.06 | 0.09 | 0.03 |
U.S.
Department of the Interior | U.S. Geological
Survey
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