Bonner Springs: Geode Digging in Wyandotte County, Kansas

Updated June 2026

Bonner Springs is a mapped rockhounding spot in Wyandotte County, Kansas. Reported finds include geode. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Wyandotte County
State: Kansas
Nearest road: Macgrantwood Street
Postcode: 66012
Coordinates: 39.07076, -94.86995

Geology at Bonner Springs

This spot sits on Kansas City Group, mapped as limestone and shale that formed roughly 325 to 300 million years ago. Limestone country like this is classic geode ground: cavities in the carbonate rock can line themselves with quartz or calcite crystals.

Mapped unit: Kansas City Group
Age: 325–300 Ma (Pennsylvanian)
Rock types: limestone and shale
Elevation: 840 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 Bonner Springs

Best months: March to November. Typical highs run 87°F in midsummer and 38°F in midwinter, with winter lows near 18°F.

Climate normals: NOAA 1991-2020 monthlies, BONNER SPRINGS station (1 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 Bonner Springs

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

Geode Encyclopedia →

Nearby rockhounding spots

Other rockhounding spots within driving distance of Bonner Springs.

Across the state line from Bonner Springs

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

Bonner Springs FAQ

Where is Bonner Springs?+

Bonner Springs is in Wyandotte County, Kansas, at 39.07076, -94.86995. Nearest road: Macgrantwood Street.

What rocks and minerals can you find at Bonner Springs?+

Bonner Springs is reported to produce Geode.

Is collecting allowed at Bonner Springs?+

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 Bonner Springs?+

Bring a crack hammer, a chisel, safety glasses, and a bucket. Candidates are rounder and lighter than solid rock; a soil pipe cutter opens them cleaner than a flat smash.

When is the best time to visit Bonner Springs?+

The most comfortable months at Bonner Springs are March to November.

How do I get to Bonner Springs?+

Open the directions link to navigate to 39.07076, -94.86995 in Google Maps. The nearest road is Macgrantwood Street.

More rockhounding in Kansas

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Open Bonner Springs on the map

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