Steel City: Agate & Chalcedony Rockhounding in Jefferson County, Nebraska

Updated June 2026

Steel City is a mapped rockhounding spot in Jefferson County, Nebraska. Reported finds include agate, chalcedony, jasper, petrified wood. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Jefferson County
State: Nebraska
Nearest road: Romeo Road
Postcode: 68350
Coordinates: 40.04045, -97.03476

Geology at Steel City

This spot sits on Dakota Group, mapped as sandstone and shale that formed roughly 145 to 100 million years ago. Sedimentary beds like these are the typical host for petrified and silicified wood, which weathers out as durable float on slopes and in washes.

Mapped unit: Dakota Group
Age: 145–100 Ma (Early Cretaceous)
Rock types: sandstone and shale
Elevation: 1,270 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 Steel City

Best months: March to November. Typical highs run 89°F in midsummer and 37°F in midwinter, with winter lows near 15°F.

Climate normals: NOAA 1991-2020 monthlies, FAIRBURY 7S station (8 mi away), adjusted for elevation.

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 Steel City

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 Steel City.

Across the state line from Steel City

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

Steel City FAQ

Where is Steel City?+

Steel City is in Jefferson County, Nebraska, at 40.04045, -97.03476. Nearest road: Romeo Road.

What rocks and minerals can you find at Steel City?+

Steel City is reported to produce Agate, Chalcedony, Jasper, Petrified Wood.

Is collecting allowed at Steel City?+

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 Steel City?+

A rock hammer, sturdy gloves, and a padded bag cover petrified wood hunting. Most pieces are surface float, so walking slopes and washes beats digging.

When is the best time to visit Steel City?+

The most comfortable months at Steel City are March to November.

How do I get to Steel City?+

Open the directions link to navigate to 40.04045, -97.03476 in Google Maps. The nearest road is Romeo Road.

More rockhounding in Nebraska

See all 32 Nebraska spots →

Open Steel City on the map

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