The federal record (USGS MRDS) lists 50 gold occurrences in Sweet Grass County — 6 of them past or active producers. Below is that record, readable: the documented sites, and the live map that puts claims, creeks, roads and geology under every one of them.
Open the Sweet Grass County gold map → Membership — first week free
Producers first, then prospects and occurrences — each links into the live map of that exact ground:
| Site | Status | Type |
|---|---|---|
| Boulder Creek Mine | Producer | pge reef |
| Daisy | Past producer | — |
| Daisy Group | Past producer | vein |
| Hidden Treasure Mine | Past producer | vein |
| Independence Mine | Past producer | vein |
| Placer and Placer | Past producer | placer |
| Accident | Prospect | — |
| Annie | Prospect | — |
| Blue Lake Prospects | Prospect | — |
| Brilliant | Prospect | — |
| Clara | Prospect | — |
| Columbus | Prospect | — |
| Crown | Prospect | — |
| Cumberland | Prospect | — |
| Delta | Prospect | — |
| Delta Lode | Prospect | — |
| East Rainbow | Prospect | — |
| Emma | Prospect | — |
| Gold Hill Mine | Occurrence | — |
| Golden Slipper | Prospect | — |
| Half Moon Mine | Occurrence | — |
| Haystack Peak Prospect | Prospect | — |
| Hidden Treasure | Prospect | — |
| Hidden Treasure No. 4 | Prospect | — |
| Ida B | Prospect | — |
| Independence A | Prospect | — |
| Iron Mountain-Gold Hill Area | Prospect | — |
| Kelly Prospect | Occurrence | — |
| Lilliput Fraction 221 | Prospect | — |
| Midnight Bell | Occurrence | — |
Showing the top 30 of 50 recorded gold occurrences — every one is on the live map.
The free map shows every dot above. Membership opens the layers that turn dots into a plan — favorability at working zoom, active claims, land ownership, geology and the creeks that drain the known sources. The first 7 days are free.