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USA | |
| www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf. |
| Williams, William C., Bornhorst, Theodore J. (2023) Controls on the Stratiform Copper Mineralization in the Western Syncline, Upper Peninsula, Michigan. Minerals, 13 (7) 927 doi:10.3390/min13070927 |
| Copperwoood Mine Orvana Resources US Corp. Mine Permit Application Williams, William C., and Theodore J. Bornhorst. 2023. "Controls on the Stratiform Copper Mineralization in the Western Syncline, Upper Peninsula, Michigan" Minerals 13, no. 7: 927. https://doi.org/10.3390/min13070927 |
| www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf. |
| www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf. |
| www.deq.state.mi.us/documents/deq-glm-rcim-geology-Minerals_Found_In_Michigan.Pdf. |
| Heinrich, E. Wm. (1976) The Mineralogy of Michigan. Bulletin 6 (1st ed.) Michigan Geological Survey Division |