Where to Find Chalcedony in South Dakota
South Dakota has 7 mapped collecting spots that report chalcedony, spread across 5 counties. The largest share sits in Lawrence County County with 2 spots. 7 of the spots are on land mapped as publicly accessible.
Map of 7 chalcedony collecting spots in South Dakota
Best counties for chalcedony in South Dakota
Ranked by the number of mapped chalcedony spots. County links open the full rockhounding page for that county.
- Lawrence County2 spots
- Oglala Lakota County2 spots
- Fall River County1 spot
- Harding County1 spot
- Jackson County1 spot
Every chalcedony spot we track in South Dakota
Sorted by county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| ArdmoreEast Ardmore Road | Fall River County |
| 43.0107, -103.4691 | Public |
| Camp CrookSD Highway 20 | Harding County | 45.5525, -103.9650 | Public | |
| InteriorBen Reifel Road | Jackson County | 43.7320, -101.9454 | Public | |
| Spearfish CanyonUS Highway 14A | Lawrence County | 44.3470, -103.9244 | Public | |
| Whitewood CreekWhitewood Valley Road | Lawrence County | 44.5465, -103.5639 | Public | |
| Oglala | Oglala Lakota County | 43.2963, -102.9105 | Public | |
| Red ShirtTatanka Numpa Road | Oglala Lakota County | 43.6741, -102.8991 | Public |
Before you go
Read the chalcedony identification guide so you know what a keeper looks like in the field: Chalcedony in the encyclopedia.
Chalcedony in South Dakota FAQ
Where can you find chalcedony in South Dakota?+
The mapped spots concentrate in Lawrence County County, Oglala Lakota County County, and Fall River County County. Every spot on this page appears on the map above with coordinates and access notes.
How many chalcedony spots are mapped in South Dakota?+
7 spots across 5 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.
Is it legal to collect chalcedony in South Dakota?+
Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 7 of the 7 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.
Where else to find chalcedony
More minerals to hunt in South Dakota
Hunt chalcedony in South Dakota with the map in your pocket
RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.
