Found alongside
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
287 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
129 sites
Magnetite
Mohs 5.5–6.5. Black and strongly magnetic. Mindat
125 sites
Feldspar
Mohs 6–6.5. Blocky crystals with flat cleavage faces. Mindat
87 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
56 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
16 sites
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
By county
Marquette County (99) · Houghton County (66) · Ontonagon County (33) · Dickinson County (31) · Keweenaw County (26) · Iron County (6) · Ottawa County (5) · Berrien County (5) · Van Buren County (5) · Muskegon County (2) · Eaton County (1) · Gogebic County (1) · Benzie County (1) · Wayne County (1) · Wexford County (1) · Tuscola County (1) · Mackinac County (1) · Allegan County (1) · Mason County (1)
Sites (first 60)
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Suffolk Exploration | Copper | Chalcocite | Past Producer | 47.345, -88.234 |
| White Pine Mine | Copper | Chalcocite, Copper, Silver | Past Producer | 46.744, -89.534 |
| St. Louis Exploration | Copper | Chalcocite, Malachite, Copper | Prospect | 47.231, -88.413 |
| Kona Dolomite | Copper | Chalcocite, Pyrite, Malachite, Chalcopyrite, Bornite | Producer | 46.833, -87.750 |
| Superior Mine | Copper | Copper | Past Producer | 47.078, -88.599 |
| Tamarack Junior Mine | Copper | Copper | Past Producer | 47.259, -88.449 |
| Tamarack Mine | Copper | Copper | Past Producer | 47.259, -88.460 |
| Trimountain Mine | Copper | Copper | Past Producer | 47.052, -88.655 |
| Gratiot Copper Mine | Silver, Copper | Copper | Past Producer | 47.315, -88.345 |
| Ripley Exploration | Copper | Copper | Prospect | 47.129, -88.552 |
| Vulcan Exploration Copper Mine | Copper | Copper | Past Producer | 47.436, -87.788 |
| Lac La Belle Exploration | Copper | Copper | Past Producer | 47.422, -87.804 |
| Resolute Mine | Copper | Copper | Past Producer | 47.430, -88.034 |
| South Kearsarge Mine | Copper | Copper | Past Producer | 47.261, -88.418 |
| Baltic Amygdaloid | Copper | Copper | Past Producer | 47.065, -88.634 |
| Petherick Mine | Copper | Copper | Past Producer | 47.424, -88.200 |
| Baltic Mine | Copper | Copper | Past Producer | 47.063, -88.635 |
| Laurium Mine | Copper | Copper | Past Producer | 47.219, -88.462 |
| Quincy Mine | Copper, Silver | Copper | Past Producer | 47.143, -88.570 |
| Wolverine Mine | Copper | Copper | Past Producer | 47.268, -88.411 |
| Atlantic Amygdaloid | Copper | Copper | Past Producer | 47.099, -88.627 |
| Lake Superior Mine | Copper | Copper | Past Producer | 46.739, -89.147 |
| Belt Mine (Piscatauqua) | Copper | Copper | Past Producer | 46.783, -89.067 |
| Osceola Mine | Copper | Copper | Past Producer | 47.226, -88.463 |
| North Kearsarge Mine | Copper | Copper | Past Producer | 47.272, -88.408 |
| Ojibway Mine | Copper | Copper | Past Producer | 47.338, -88.266 |
| Houghton Exploration | Copper | Copper | Prospect | 47.081, -88.590 |
| Naumkeag Mine | Copper | Copper | Past Producer | 47.112, -88.598 |
| New Arcadian Exploration | Copper | Copper | Prospect | 47.164, -88.512 |
| New Baltic Exploration | Copper | Copper | Prospect | 47.161, -88.491 |
| Old Colony Exploration | Copper | Copper | Prospect | 47.243, -88.396 |
| Oneco Exploration | Copper | Copper | Prospect | 47.186, -88.475 |
| Rhode Island Exploration | Copper | Copper | Prospect | 47.185, -88.521 |
| Saint Mary's Mine | Copper | Copper | Prospect | 47.167, -88.541 |
| Atlantic Mine | Copper | Copper | Past Producer | 47.100, -88.628 |
| Mayflower Old Colony Mine | Copper | Copper | Past Producer | 47.257, -88.395 |
| Centennial Mine | Copper | Copper | Past Producer | 47.256, -88.423 |
| Champion Mine | Copper | Copper | Past Producer | 47.037, -88.668 |
| Manhattan Exploration | Copper | Copper | Prospect | 47.352, -88.333 |
| Franklin Junior Mine | Copper | Copper | Past Producer | 47.180, -88.526 |
| Hancock Mine | Copper | Copper | Past Producer | 47.129, -88.590 |
| Isle Royale Mine | Copper | Copper | Past Producer | 47.098, -88.580 |
| La Salle Mine | Copper | Copper | Past Producer | 47.213, -88.469 |
| Mohawk Mine | Copper | Copper | Past Producer | 47.305, -88.359 |
| Seneca No. 1 Mine | Copper | Copper | Past Producer | 47.310, -88.353 |
| Seneca No. 2 Mine | Copper | Copper | Past Producer | 47.381, -88.349 |
| Ahmeek Copper Mine | Copper | Copper | Past Producer | 47.289, -88.384 |
| Bohemian Range Exploration | Copper | Copper | Prospect | 47.340, -88.236 |
| Indiana Mine | Copper | Copper | Past Producer | 46.799, -88.997 |
| King Philip Mine | Copper | Copper | Past Producer | 46.871, -88.919 |
| Lake Mine | Copper | Copper | Past Producer | 46.768, -89.037 |
| Victoria Mine (Cushin) | Copper | Copper | Past Producer | 46.700, -89.232 |
| Old Mass Mine | Copper | Copper | Past Producer | 46.756, -89.113 |
| Toltec Mine | Copper | Copper | Past Producer | 46.779, -89.043 |
| Aetna Exploration Copper Mine | Copper | Copper | Past Producer | 47.434, -87.928 |
| Algomah Mine | Copper | Copper | Past Producer | 46.761, -89.040 |
| Shawmut Mine | Copper | Copper | Past Producer | 46.919, -88.852 |
| Cherokee Mine | Copper | Copper | Past Producer | 46.843, -88.967 |
| Wyandot Mine | Copper | Copper | Past Producer | 46.891, -88.876 |
| Calumet and Hecla Conglomerate Lode | Copper | Copper | Past Producer | 47.246, -88.450 |
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