Rockhounding in Middlesex County, New Jersey
1 mapped rockhounding spot in Middlesex County. Most commonly produces marcasite, petrified wood, pyrite.
Map showing 1 rockhounding spot in Middlesex County, New Jersey
Minerals reported in Middlesex County
Spots in Middlesex County
| Spot | Minerals | Coordinates | Access |
|---|---|---|---|
| SayrevilleBordentown Avenue | 40.4387, -74.3298 | Public |
Neighboring counties in New Jersey
Adjacent rockhounding counties, ranked by how close their centroids sit to Middlesex County. A natural extension if Middlesex County is already on your trip plan.
- Somerset County~15 mi9 spotsTop: Quartz, Agate, Prehnite
- Monmouth County~23 mi3 spotsTop: Quartz, Amber, Fossils
- Hudson County~24 mi4 spotsTop: Amethyst, Common Opal, Fire Opal
- Mercer County~28 mi5 spotsTop: Calcite, Amber, Axinite
- Morris County~33 mi11 spotsTop: Pyrite, Apatite, Chalcopyrite
- Hunterdon County~35 mi5 spotsTop: Axinite, Datolite, Actinolite
Across the state line from Middlesex 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 Jersey.
- Bucks County~39 miPennsylvania · 6 spotsTop: Petrified Wood, Jasper, Agate
- Monroe County~61 miPennsylvania · 3 spotsTop: Quartz, Agatized Coral, Azurite
- Orange County~63 miNew York · 5 spotsTop: Bloodstone, Arsenopyrite, Blue Corundum
- Delaware County~67 miPennsylvania · 8 spotsTop: Quartz, Amethyst, Feldspar
Middlesex County FAQ
Where can I rockhound in Middlesex County, New Jersey?+
RockHoundR tracks 1 rockhounding spot in Middlesex County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.
What rocks and minerals are common in Middlesex County?+
Spots in Middlesex County most often produce Marcasite, Petrified Wood, Pyrite. Individual spots can vary widely.
Are these Middlesex 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 Middlesex County rockhounding trip
Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.
