Table 2. Copper phase analysis.
| Phase | Free copper oxide | Bonded copper oxide | Secondary copper sulfide | Primary copper sulfide | Total copper |
|---|---|---|---|---|---|
| Content (%) | 0.71 | 0.35 | 1.11 | 0.12 | 2.28 |
| Distribution rate (%) | 31.14 | 15.35 | 48.68 | 5.26 | 100.00 |
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