Muskingum County: Agate & Amethyst Rockhounding in Muskingum County, Ohio

Updated June 2026

Muskingum County is a mapped rockhounding spot in Muskingum County, Ohio. Reported finds include agate, amethyst, carnelian, chalcedony, chert, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Muskingum County
State: Ohio
Nearest road: I 70
Coordinates: 39.95953, -81.93476

Geology at Muskingum County

This spot sits on Allegheny and Pottsville Groups, Undivided, mapped as shale and siltstone that formed roughly 325 to 300 million years ago. Tough silica like agate, jasper, and chert typically weathers out of beds like these and collects as float in drainages and on deflation surfaces.

Mapped unit: Allegheny and Pottsville Groups, Undivided
Age: 325–300 Ma (Pennsylvanian)
Rock types: shale and siltstone
Elevation: 880 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Best time to visit Muskingum County

Best months: March to November. Typical highs run 85°F in midsummer and 38°F in midwinter, with winter lows near 22°F.

Climate normals: NOAA 1991-2020 monthlies, ZANESVILLE MUNI AP station (2 mi away).

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Muskingum County

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Muskingum County.

Across the state line from Muskingum County

Muskingum County is close enough to the Ohio border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

New MartinsvilleWetzel County, West Virginia · 59 mi awayMuscovite

Muskingum County FAQ

Where is Muskingum County?+

Muskingum County is in Muskingum County, Ohio, at 39.95953, -81.93476. Nearest road: I 70.

What rocks and minerals can you find at Muskingum County?+

Muskingum County is reported to produce Agate, Amethyst, Carnelian, Chalcedony, Chert, Flint, Jasp-agate, Jasper, Smoky Quartz, Quartz.

Is collecting allowed at Muskingum County?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Muskingum County?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

When is the best time to visit Muskingum County?+

The most comfortable months at Muskingum County are March to November.

How do I get to Muskingum County?+

Open the directions link to navigate to 39.95953, -81.93476 in Google Maps. The nearest road is I 70.

More rockhounding in Ohio

See all 38 Ohio spots →

Open Muskingum County on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.