Research Article
Physiochemical Restrictions of Mineral Zoning of Sediment-Hosted Stratiform Copper Deposit in SW China
Table 7
The features of mineral zoning.
| | | FeS2 | CuFeS2 | Cu5FeS4 | Cu2S | Fe2O3+Cu |
| | S system | H2S | H2S + HS− | H2S + HS− | HS− + S2− | | | pH | Acid | Weak acid neutral | Neutral-weak alkalinity | Alkalinity | Weak acid alkalinity | | Eh | Weak reduction | Reduction | Reduction | Reduction | Oxidation | | Medium | Medium | Medium | Medium | Medium-high | | Medium-high | Medium | Medium-high | Medium | Medium | | Cement | Quartz | Quartz + carbonate | Quartz + carbonate | Quartz + carbonate | Carbonate + clay | | Temperature variation | Medium | Medium-low temperature | Medium-low | Low | Medium |
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