| Lat / long: | 42.74973, -91.25431 |
| Primary: | Phosphorus-Phosphates |
| Operation type: | Unknown |
| Production size: | Small |
| Development status: | Past Producer |
| Host rock: | Maquoketa Shale |
| Host type: | Phosphorite |
| MRDS | W044560 |
| DEP | 10082052 |
| Reference | F1 < BROWN, C. E., 1974, PHOSPHATIC ZONE IN THE LOWER PART OF THE MAQUOKETA SHALE IN NORTHEAST IOWA: U.S. GEOLOGICAL SURVEY JOURNAL OF RESEARCH, V. 2, NO. 2, P. 219-232 |
| Reporter | Miller, M. |