Where to Find Calcite in Wisconsin

Wisconsin has 9 mapped collecting spots that report calcite, spread across 7 counties. The largest share sits in Grant County with 2 spots. 9 of the spots are on land mapped as publicly accessible.

Standout calcite spots in Wisconsin

Hand-picked from the full list below, with the reason each one earns a trip.

Near Saxon Falls
Iron County
The Montreal River gorge below Saxon Falls exposes Keweenawan basalt whose gas cavities are lined with zeolite minerals.
Racine
Racine County
Quarry Lake Park in Racine exposes the Silurian Racine Formation dolomite, part of the reef complex recognized as among the first fossil coral reefs described in North America.

Best counties for calcite in Wisconsin

Ranked by the number of mapped calcite spots. County links open the full rockhounding page for that county.

Grant County2 spots
Iron County2 spots
Iowa County1 spot
Polk County1 spot
Racine County1 spot
Rusk County1 spot
Waushara County1 spot

Every calcite spot we track in Wisconsin

Sorted by county. Coordinates open in Google Maps.

Spot	County	Minerals	Coordinates	Access
Hazel GreenState Highway 80	Grant County	Barite Calcite Galena Marcasite Pyrite Smithsonite Sphalerite	42.5327, -90.4359	Public
PlattevilleWest Main Street	Grant County	Barite Calcite Galena Marcasite Pyrite Smithsonite Sphalerite	42.7346, -90.4803	Public
DodgevilleCounty Highway YZ	Iowa County	Barite Calcite Galena Marcasite Pyrite Smithsonite Sphalerite	42.9757, -90.0862	Public
Montreal MineWisconsin Avenue	Iron County	Actinolite Barite Selenite Braunite Calcite Celestine Dickite Dolomite +10 more	46.4281, -90.2337	Public
Near Saxon FallsSaxon Falls Road	Iron County	Calcite Chlorite Epidote Laumontite Prehnite Thomsonite	46.5356, -90.3787	Public
Dresser Trap Rock QuarryEast Avenue North	Polk County	Actinolite Augite Bornite Calcite Chalcopyrite Chlorite Chrysotile Copper +7 more	45.3790, -92.6297	Public
RacineRacine MRK Trail	Racine County	Fossils Calcite Marcasite	42.7739, -87.8083	Public
Flambeau Copper MineKennecott Avenue	Rusk County	Calcite Chalcocite Malachite Gold Quartz Zinc	45.4427, -91.1209	Public
OshkoshDivision Street	Waushara County	Calcite Galena Marcasite Pyrite Sphalerite Fossils	44.0430, -89.0981	Public

Before you go

Read the calcite identification guide so you know what a keeper looks like in the field: Calcite in the encyclopedia.

Calcite in Wisconsin FAQ

Where can you find calcite in Wisconsin?+

The mapped spots concentrate in Grant County, Iron County, and Iowa County. Every spot on this page appears on the map above with coordinates and access notes.

How many calcite spots are mapped in Wisconsin?+

9 spots across 7 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 calcite 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. 9 of the 9 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.

Where else to find calcite

More minerals to hunt in Wisconsin

Hunt calcite 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.