Where to Find Marcasite in Wisconsin
Wisconsin has 7 mapped collecting spots that report marcasite, spread across 5 counties. The largest share sits in Grant County with 3 spots. 7 of the spots are on land mapped as publicly accessible.
Every marcasite spot we track in Wisconsin
Best spotRacineRacine County, WisconsinPublic access · Fossil, Calcite, Marcasite
Montreal MineIron County, WisconsinPublic access · Actinolite, Barite, Selenite +15- DodgevilleIowa County, WisconsinPublic access · Barite, Calcite, Galena +4
- Hazel GreenGrant County, WisconsinPublic access · Barite, Calcite, Galena +4
- PlattevilleGrant County, WisconsinPublic access · Barite, Calcite, Galena +4
- WerleyGrant County, WisconsinPublic access · Barite, Dogtooth Calcite, Galena +4
- OshkoshWaushara County, WisconsinPublic access · Calcite, Galena, Marcasite +3
Standout marcasite spots in Wisconsin
Hand-picked from the full list above, with the reason each one earns a trip.
Best counties for marcasite in Wisconsin
Ranked by the number of mapped marcasite spots. County links open the full rockhounding page for that county.
- Grant County3 spots
- Iowa County1 spot
- Iron County1 spot
- Racine County1 spot
- Waushara County1 spot
Before you go
Read the marcasite identification guide so you know what a keeper looks like in the field: Marcasite in the encyclopedia.
Marcasite in Wisconsin FAQ
Where can you find marcasite in Wisconsin?+
The mapped spots concentrate in Grant County, Iowa County, and Iron County. Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many marcasite spots are mapped in Wisconsin?+
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 marcasite in Wisconsin?+
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 marcasite
More minerals to hunt in Wisconsin
Hunt marcasite in Wisconsin 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.
