Sheffler Rock Shop & Geode Mine
Keokuk geodes · Quartz crystals · Calcite · Chalcedony
Geode digging is by appointment only; call before traveling
Read evidence and missing details →Missouri field pilot.
A manageable set of trips to test the full experience. Two destinations have newly checked planning details; other Missouri listings still need parking, walking and current-condition evidence. Reference check: 2026-08-31.
Mark Twain National Forest — Potosi District
Drusy quartz · Chert · Dolomite · Common invertebrate fossils
Use National Forest land open to public entry; confirm the exact parcel and current restrictions with the district office
Read evidence and missing details →Mark Twain National Forest — Eleven Point District
Brachiopods · Crinoid fragments · Chert · Dolomite
Verify National Forest boundaries and current conditions with the Eleven Point ranger office before collecting
Read evidence and missing details →Missouri Mines State Historic Site
Galena displays · Historic mining equipment · Mozarkite displays · Missouri mineral gallery
Visit the museum and preserved Federal Mill complex during posted seasonal hours
Read evidence and missing details →Lake of the Ozarks State Park Public Beach
Beach finds · Modern coins · Jewelry · Metal litter
Complete the free annual registration and detect only on the designated sand beach and adjacent shoreline
Read evidence and missing details →Stockton State Park Public Beach
Beach finds · Modern coins · Jewelry · Metal litter
Register annually and detect only on the designated sand beach and shoreline during listed hours
Read evidence and missing details →Watkins Mill State Park Public Beach
Beach finds · Modern coins · Jewelry · Metal litter
Register annually and call the park at least 24 hours ahead so staff can confirm access to the designated beach
Read evidence and missing details →Missouri State Parks generally prohibit taking rocks without written permission from the state park director. Designated metal-detecting beaches have a separate registration process; that does not authorize general rock collecting. Park rules · Detecting rules
Local clubs & operators
Public contact directory—not confirmed TerraDiscovery partners. No organization has been contacted or enrolled. Listed research leads are not collecting permissions.
St. Louis Mineral and Gem Society
St. Louis, Missouri
Mineral education, youth activities and member field trips. Check the club’s current participation requirements.
Visit their public page ↗Central Missouri Rock & Lapidary Club
Columbia, Missouri
Rock, mineral, fossil and lapidary activities, including a youth program. Contact the club for current details.
Visit their public page ↗Sheffler Rock Shop & Geode Mine
Alexandria, Missouri
Appointment-only geode digging. Contact the operator directly for availability and fees.
Visit their public page ↗Haunted Ridge Rocks
Cadet, Missouri
Local operator research lead. Current entry, pricing and access have not been fully rechecked; confirm directly before planning a visit.
Visit their public page ↗West Druse Rock & Farm
Potosi, Missouri
Local operator research lead. Use the operator’s booking information; do not assume walk-in or unrestricted access.
Visit their public page ↗Submit your club, mine or guide information →
Beta field test
- Choose a feasible destination using the planner.
- Confirm access, appointment, budget, parking and terrain directly with the operator.
- Download the field pack and open it with airplane mode on before leaving.
- Compare directions and site details with what you actually encounter; respect posted rules.
- Send factual feedback about missing information, confusing controls or changed conditions.
No beta-test results are claimed yet; these are tasks for volunteer testers.