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USA | |
| I.S Merkel |
| Walder, I. F., Carr, D., Lee, J. S., & Williamson, A. (2004) Similarities in hydrogeochemical processes between ore deposition formation and acid mine drainage. Example near a porphyry copper mine. Proceedings 2004 - International Mine Water Association |
| Merritt Stephen Enders (2000) The Evolution of Supergene Enrichment in the Morenci Porphyry Copper Deposit, Greenlee County, Arizona. PhD Thesis, University of Arizona |