Kahoka: Geode Digging in Clark County, Missouri

Updated June 2026

Kahoka is a mapped rockhounding spot in Clark County, Missouri. Reported finds include geode. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Clark County
State: Missouri
Nearest road: County Road 176
Postcode: 63445
Coordinates: 40.45020, -91.69861

Geology at Kahoka

This spot sits on ground mapped as limestone that formed roughly 360 to 325 million years ago. Limestone country like this is classic geode ground: cavities in the carbonate rock can line themselves with quartz or calcite crystals.

Age: 360–325 Ma (Mississippian)
Rock types: limestone
Elevation: 570 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 Kahoka

Best months: March to November. Typical highs run 87°F in midsummer and 33°F in midwinter, with winter lows near 16°F.

Climate normals: NOAA 1991-2020 monthlies, DONNELLSON station (15 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 Kahoka

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 Kahoka.

Across the state line from Kahoka

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

Kahoka FAQ

Where is Kahoka?+

Kahoka is in Clark County, Missouri, at 40.45020, -91.69861. Nearest road: County Road 176.

What rocks and minerals can you find at Kahoka?+

Kahoka is reported to produce Geode.

Is collecting allowed at Kahoka?+

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 Kahoka?+

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 Kahoka?+

The most comfortable months at Kahoka are March to November.

How do I get to Kahoka?+

Open the directions link to navigate to 40.45020, -91.69861 in Google Maps. The nearest road is County Road 176.

More rockhounding in Missouri

See all 94 Missouri spots →

Open Kahoka on the map

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