RockWoofCheck access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.
Found alongside
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
145 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
125 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
13 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
11 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
7 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
3 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Marquette County (90) · Dickinson County (31) · Iron County (11) · Baraga County (10) · Houghton County (3)
Sites (first 60)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Michigamme Mine | Iron | Hematite | Past Producer | 46.539, -88.099 |
| Lee Peck Mine | Iron | Hematite, Goethite, Limonite | Past Producer | 46.097, -88.270 |
| Hollister Mine | Iron | Hematite, Goethite, Limonite | Past Producer | 46.123, -88.261 |
| Armania Mine | Iron | Hematite, Goethite, Limonite | Past Producer | 46.108, -88.264 |
| Mcdonald Mine | Iron | Hematite, Goethite, Limonite | Past Producer | 46.111, -88.263 |
| Hope Mine | Iron | Hematite, Goethite, Limonite | Past Producer | 46.091, -88.286 |
| Steward Mine (Orleans) | Iron | Hematite, Grunerite, Limonite | Past Producer | 46.536, -88.157 |
| Portland Mine | Iron | Hematite, Grunerite, Limonite | Past Producer | 46.535, -88.152 |
| Ohio Mine | Iron | Hematite, Grunerite, Limonite | Past Producer | 46.537, -88.162 |
| Spurr Mine | Iron | Hematite, Grunerite, Siderite | Past Producer | 46.541, -88.133 |
| Imperial Mine (Wetmore) | Iron | Hematite, Limonite, Grunerite | Past Producer | 46.531, -88.133 |
| Humboldt Mine (Cci) | Iron | Hematite, Magnetite | Past Producer | 46.490, -87.900 |
| Isabella Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.436, -87.588 |
| Mary Charlotte Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.483, -87.591 |
| Marquette Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.476, -87.644 |
| Maas Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.509, -87.598 |
| Lucy Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.491, -87.610 |
| Lucky Star Reserve | Iron | Hematite, Magnetite, Goethite | Prospect | 46.498, -87.590 |
| Lloyd Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.501, -87.737 |
| Lake Superior Group | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.483, -87.676 |
| Lake Sally Reserve | Iron | Hematite, Magnetite, Goethite | Prospect | 46.466, -87.644 |
| Lake Angeline Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.476, -87.665 |
| Lackawanna Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.498, -87.574 |
| Michigan Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.478, -87.861 |
| Howell-Hoppock Prospect | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.447, -87.683 |
| Gibson Prospect | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.523, -87.952 |
| Himrod Prospect | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.483, -87.606 |
| Rowland Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.483, -87.610 |
| Greenwood Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.464, -87.768 |
| Goodrich Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.459, -87.736 |
| Miller Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.462, -87.691 |
| Gardner-Mackinaw Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.250, -87.391 |
| Francis Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.268, -87.428 |
| Foster Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.451, -87.654 |
| Forest City Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.511, -87.648 |
| Fitch Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.459, -87.748 |
| Excelsior Prospect | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.495, -87.737 |
| East Champion | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.509, -87.963 |
| Hortense Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.523, -87.952 |
| Milwaukee-Davis Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.487, -87.608 |
| Negaunee Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.501, -87.594 |
| Moore Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.436, -87.557 |
| Winthrop Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.453, -87.692 |
| Wicks Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.432, -87.575 |
| Humboldt (Old) Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.489, -87.904 |
| Volunteer (Old) Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.437, -87.599 |
| Volunteer (New) Mine | Iron | Hematite, Magnetite, Goethite | Producer | 46.447, -87.615 |
| Stephenson Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.278, -87.469 |
| Princeton Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.291, -87.469 |
| Section 12 Mine | Iron | Hematite, Magnetite, Goethite | Prospect | 46.490, -87.622 |
| Sampson Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.493, -87.895 |
| Salisbury Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.473, -87.668 |
| Rolling Mill Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.486, -87.598 |
| Richmond Mine (Old) | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.436, -87.569 |
| Richmond Mine (New) | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.437, -87.547 |
| Richards Prospect | Iron | Hematite, Magnetite, Goethite | Prospect | 46.432, -87.559 |
| Saginaw Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.461, -87.727 |
| Pontiac Prospect | Iron | Hematite, Magnetite, Goethite | Producer | 46.490, -87.621 |
| Platt Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.433, -87.580 |
| Pioneer Mine | Iron | Hematite, Magnetite, Goethite | Past Producer | 46.497, -87.569 |
Back to Rockhounding in Michigan.
How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.
Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.
Updated