Nickel production by country in metric tons. Dark blue (more than 200,000): Russia. Blue to light blue (2 to 200,000): China, Australia, U S A, Brazil, South Africa. Very light blue (0 to 1): Most of Africa, Asia, and Europe, and Mexico, Argentina.
Class | Rank | Metric tons | Risk level 1 (very low) | Risk level 2 | Risk level 3 (low) | Risk level 4 | Risk level 5 (moderate) | Risk level 6 | Abyssal clay | Calcareous ooze | Continental (lithogenous) | Diatom | Radiolarian | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 49.2% | 8.45% | 12.0% | 18.7% | 9.20% | 0.891% | 29.4% | 0.428% | 4.26% | 0.351% | 22.4% | ||||
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