Red bed from USA
USA | |
| 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 |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Lasky, S. G. (1947) Geology and ore deposits of the Little Hatchet Mountains, Hidalgo and Grant Counties, New Mexico. USGS Professional Paper 208 |