RockWoofSketch map
Woof’s favorite find
Jumbo Mine
We picked it because its USGS record mentions 3 gem or collectible minerals (Quartz, Gold, Silver) and 6 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence for Silver, Lead. Minerals mentioned: Quartz, Gold, Pyrite, Galena, Copper, Silver. Approx. location 47.955, -114.360. USGS record.
Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.
Field cards: what kind of sites?
The mineral was noted here, without development.
Explored or test-dug, with no recorded production.
Produced ore or material at some point in the past.
Status terms come from USGS MRDS records.
Mineral cards
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
15 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
12 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
3 sites
Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
2 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
2 sites
Galena
Mohs 2.5–2.75. Heavy, silvery lead ore that breaks into cubes. Mindat
1 site
Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.
Minerals recorded here
Malachite 3Chalcopyrite 2Galena 1Tenorite 1Commodities
Silver 11Copper 9Lead 7Gold 2Zinc 1Barium-Barite 1Sites
| Site | Commodity | Minerals recorded | Status | Approx. location |
|---|---|---|---|---|
| Jumbo Mine | Silver, Lead | Chalcopyrite, Galena, Malachite | Occurrence | 47.955, -114.360 |
| Mosher Prospect | Copper, Silver | Chalcopyrite, Malachite, Tenorite | Occurrence | 47.916, -114.302 |
| Swan Lake Copper - Silver Occurrence | — | Malachite | Occurrence | 47.954, -113.880 |
| Chief Cliff Mine | Lead, Silver | — | Occurrence | 47.854, -114.320 |
| Unnamed Prospect | Lead, Silver, Copper | — | Occurrence | 47.955, -114.330 |
| Silverstone Mine | Copper, Lead, Zinc, Silver | — | Occurrence | 47.857, -114.349 |
| Unnamed Prospects | Copper, Gold, Silver | — | Prospect | 47.775, -114.400 |
| Silverstone Mine | Silver | — | Occurrence | 47.861, -114.356 |
| Unnamed Prospects | Lead, Copper, Silver | — | Prospect | 47.855, -114.382 |
| Flathead Mines Inc. | Silver | — | Past Producer | 47.817, -114.625 |
| Unnamed Barite | Barium-Barite | — | Occurrence | 47.450, -114.277 |
| Jumbo | Silver | — | Past Producer | 47.955, -114.359 |
| Chief Cliff Mine | Lead | — | Occurrence | 47.855, -114.339 |
| Mosher Prospect | Copper | — | Past Producer | 47.917, -114.302 |
| Unamed Prospect | Lead | — | Prospect | 47.955, -114.330 |
| Unamed Location | Copper | — | Occurrence | 47.956, -113.884 |
| Unnamed Prospect | Copper | — | Prospect | 47.798, -114.389 |
Nearby counties
Flathead County · Mineral County · Sanders County · Lincoln County · Missoula County
Montana mineral guides
- Tourmaline in Montana
- Quartz in Montana
- Garnet in Montana
- Gold in Montana
- Mica in Montana
- Feldspar in Montana
Back to all Montana counties.
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