Where to Find Agatized Wood in South Dakota
South Dakota has 6 mapped collecting spots that report agatized wood, spread across 4 counties. The largest share sits in Fall River County with 3 spots. 5 of the spots are on land mapped as publicly accessible.
Every agatized wood spot we track in South Dakota
Best spotArdmoreFall River County, South DakotaPublic access · Fairburn Agate, Agatized Wood, Jasper +2- Best spotOelrichsFall River County, South DakotaPublic access · Fairburn Agate, Jasper, Calcite +1
- Best spotFairburnCuster County, South DakotaPublic access · Fairburn Agate, Agatized Wood, Yellow Jasper
- Best spotMobridgeWalworth County, South DakotaPublic access · Opalized Wood, Agatized Wood
MissionTodd County, South DakotaPermission required · Opalized Wood, Agatized Wood, Fossil
Parker PeakFall River County, South DakotaPublic access · Agatized Wood, Silicified Wood
Standout agatized wood spots in South Dakota
Hand-picked from the full list above, with the reason each one earns a trip.
Fairburn
Custer County
These are the classic Fairburn agate beds, the type locality for South Dakota's official state gem, sitting in the eroded badlands and surface gravels just east of the village of Fairburn.
Ardmore
Fall River County
The badlands and surface gravels east and southeast of the near-ghost town of Ardmore are a well-documented Fairburn agate locality, producing Fairburn agate, agatized wood, jasper, chalcedony, and rose quartz.
Oelrichs
Fall River County
The grassland south and east of Oelrichs is a long-recognized Fairburn agate area, also producing jasper, cone-in-cone calcite, and agatized wood.
Mobridge
Walworth County
The Missouri River banks and gravels around Mobridge are one of the few South Dakota localities that produce opalized wood, a blend of petrified wood and silica or precious opal, along with agatized wood.
Best counties for agatized wood in South Dakota
Ranked by the number of mapped agatized wood spots. County links open the full rockhounding page for that county.
- Fall River County3 spots
- Custer County1 spot
- Todd County1 spot
- Walworth County1 spot
Before you go
Read the agatized wood identification guide so you know what a keeper looks like in the field: Agatized Wood in the encyclopedia.
Agatized Wood in South Dakota FAQ
Where can you find agatized wood in South Dakota?+
How many agatized wood spots are mapped in South Dakota?+
Is it legal to collect agatized wood in South Dakota?+
Where else to find agatized wood
More minerals to hunt in South Dakota
Hunt agatized wood 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.
