|
USA | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Rocks & Min., March 1998. |
| Nold, J. L., Davidson, P., & Dudley, M. A. (2013). The pilot knob magnetite deposit in the Proterozoic St. Francois Mountains Terrane, southeast Missouri, USA: A magmatic and hydrothermal replacement iron deposit. Ore Geology Reviews, 53, 446-469. |
| Rocks & Min., March 1998. |