Rockhounding in Herkimer County, New York
8 mapped rockhounding spots in Herkimer County. Most commonly produces herkimer diamond, quartz, calcite, epidote.
Map showing 8 rockhounding spots in Herkimer County, New York
Spots in Herkimer County
| Spot | Minerals | Coordinates | Access |
|---|---|---|---|
| Ace of Diamonds & Herkimer Diamond Mine |
| 43.1315, -74.9741 | Public |
| Ace of Diamonds MineNew York State Thruway |
| 43.0110, -74.9720 | Paid / fee |
| Diamond Mountain MiningNY 5S | 43.0150, -74.8740 | Paid / fee | |
| General Area (Herkimer County 1)State Highway 28 |
| 43.1532, -74.9781 | Public |
| General Area (Herkimer County 2)State Highway 29 |
| 43.1377, -74.9484 | Public |
| General Area (Herkimer County 3) |
| 43.1112, -74.9947 | Public |
| Herkimer Diamond Mines | 43.1292, -74.9763 | Paid / fee | |
| Treasure Mountain MineKing Street | 43.0240, -74.9800 | Paid / fee |
Neighboring counties in New York
Adjacent rockhounding counties, ranked by how close their centroids sit to Herkimer County. A natural extension if Herkimer County is already on your trip plan.
- Montgomery County~27 mi3 spotsTop: Herkimer Diamond, Quartz
- Onondaga County~55 mi3 spotsTop: Fluorite, Peridotite
- Warren County~66 mi3 spotsTop: Garnet, Almandine, Apatite
- Jefferson County~86 mi3 spotsTop: Barite, Fluorite, Hematite
- Saint Lawrence County~90 mi6 spotsTop: Barite, Fluorite, Anthophyllite
- Essex County~91 mi10 spotsTop: Labradorite, Graphite, Scapolite
Across the state line from Herkimer County
Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders — these are often the closest mapped spots you can reach without going deeper into New York.
Herkimer County FAQ
Where can I rockhound in Herkimer County, New York?+
RockHoundR tracks 8 rockhounding spots in Herkimer County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.
What rocks and minerals are common in Herkimer County?+
Spots in Herkimer County most often produce Herkimer Diamond, Quartz, Calcite, Epidote, Fluorite. Individual spots can vary widely.
Are these Herkimer County rockhounding spots on public land?+
Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out — links in the app open the right BLM, USFS, or county pages.
Plan a Herkimer County rockhounding trip
Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.
