Where to Find Copper in South Dakota: 10 Mapped Sites
South Dakota has 10 documented sites where copper have been reported, and the best-known are Dexter Claim, Ashley and Nyswanger, and Gopher Lode. Every site is mapped below with GPS coordinates and links to a full report of access and what's been found there.
Last updated: — data compiled by the Rockhounding.org Research Team · methodology
Copper Map: South Dakota
All 10 copper sites in South Dakota. Click a pin for the full site report.
Where Copper Are Found in South Dakota
Look on old mine dumps in copper districts and, in the Lake Superior country, in basalt flows and glacial float. Oxidized surface zones of copper deposits also carry malachite, azurite, and cuprite.
The richest reported sites in South Dakota: Dexter Claim, Ashley and Nyswanger, Gopher Lode, Gopher Lode, Horseshoe - Comet Mine.
All Copper Sites in South Dakota
- Dexter Claim — Forest Service
- Ashley and Nyswanger — Forest Service
- Gopher Lode — Forest Service
- Gopher Lode — Forest Service
- Horseshoe - Comet Mine — Forest Service
- Jenny Gulch Mine — Forest Service
- Copper Cliff Company Mine — Forest Service
- Mastiff Group — Forest Service
- Mastiff Group MS 2032 — Forest Service
- Jenny Gulch Mine — Forest Service
How to Identify Copper
Native copper shows a salmon-red metallic gleam on any fresh or scratched surface, usually hiding under a green or black tarnish crust. It is malleable — a hammer dents it rather than shattering it — and far heavier than the rock around it. Green malachite staining on outcrop is the classic pointer to copper mineralization nearby.
Not sure what you found? Try our identification guide →Frequently Asked Questions
Where can I find copper in South Dakota?
South Dakota has 10 mapped sites where copper have been reported. The best-known are Dexter Claim, Ashley and Nyswanger, and Gopher Lode. Each listing on the map above includes GPS coordinates, access type, and what has been found there.
How many copper sites are mapped in South Dakota?
We have 10 documented copper sites in South Dakota, compiled from community submissions and published locality records and reviewed by the Rockhounding.org Research Team.
Is it legal to collect copper in South Dakota?
Casual collecting is generally allowed on BLM and National Forest land for personal, non-commercial use — the standard BLM limit is 25 lbs per day plus one specimen. National parks, monuments, and many state parks prohibit collecting, and private land always requires the owner's permission. Check the site report for each location and verify current land status before you dig.
How do I identify copper?
Native copper shows a salmon-red metallic gleam on any fresh or scratched surface, usually hiding under a green or black tarnish crust. It is malleable — a hammer dents it rather than shattering it — and far heavier than the rock around it. Green malachite staining on outcrop is the classic pointer to copper mineralization nearby.
What should I bring to collect copper?
The basics: a rock hammer, safety glasses, gloves, a bucket or padded bag for specimens, and a GPS app with the coordinates from this page. Add a spray bottle — wetting a stone makes color and banding far easier to judge in the field.
⚠️ Always verify current regulations, weather conditions, and access requirements before visiting any location. Information provided is based on community submissions and may not be current or accurate.
Data: USGS Mineral Resources Data System — reviewed and approved by the Rockhounding.org Research Team. Always verify current land status, regulations, and access before visiting any site.