| Clue | Source | Date |
|---|---|---|
| Limonite and hematite, for two | Wall Street Journal | 03 Jun 2021 |
| Hematite and magnetite, e.g | Wall Street Journal | 06 Jan 2021 |
| Hematite and pyrite | Jonesin | 17 Dec 2019 |
| Magnetite and hematite | Universal | 23 Nov 2019 |
| Siderite and magnetite | Newsday | 13 Mar 2015 |
| Siderite and magnetite | ||
| Smelted materials | ||
| Hematite and magnetite | ||
| Magnetite et al. | ||
| Mine finds | ||
| Magnetite et al. | ||
| Mine finds | ||
| Hematite and pyrite | ||
| They're found in lodes | ||
| Chalybite and limonite, e.g. | ||
| Limonite and siderite | ||
| Mine finds | ||
| Hematite, pyrite, etc. | ||
| Steel-mill deliveries | ||
| Magnetite and turgite | ||
| Important product of Minnesota. |