Where to Find Agate in Michigan

Michigan has 7 mapped collecting spots that report agate, spread across 7 counties. The largest share sits in Chippewa County with 1 spot. 5 of the spots are on land mapped as publicly accessible.

Spot list checked against source data on April 1, 2026.

Standout agate spots in Michigan

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

Charles Mears State Park Beach
Oceana County
Charles Mears State Park puts almost 2,000 feet of Lake Michigan beach within easy reach in Pentwater, where wave-sorted gravel turns up Petoskey stones and other glacially transported Great Lakes specimens.
Presque Isle Shoreline
Presque Isle County
The Presque Isle peninsula on Lake Huron is documented for an unusual mix of agate, chalcedony geodes, and brown sandstone veined with calcite, finds that gather along its rocky shoreline after summer storms.

Best counties for agate in Michigan

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

Every agate spot we track in Michigan

Sorted by county. Coordinates open in Google Maps.

Spot	County	Minerals	Coordinates	Access
Whitefish PointWest North Shore Road	Chippewa County	Granite Agate Magnetite	46.7731, -84.9661	Public
Maple Creek	Gogebic County	Granite Agate Banded Iron Formation Native Copper	46.6534, -90.1133	Public
Wolverine MineMayflower Road	Houghton County	Copper Agate	47.2678, -88.4106	Permission
Tobin Harbor AreaStoll Trail	Keweenaw County	Agate Carnelian Quartz	48.1654, -88.4635	Permission
Summit Park	Mason County	Petoskey Stone Charlevoix Stone Agate Fossil	43.8560, -86.4321	Public
Charles Mears State Park BeachNorth Lakeshore Drive	Oceana County	Petoskey Stone Agate Fossil	43.7343, -86.4729	Public
Presque Isle Shoreline	Presque Isle County	Agate Chalcedony Geode Sandstone With Calcite Vein	45.3504, -83.5516	Public

Before you go

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

Agate in Michigan FAQ

Where can you find agate in Michigan?+

The mapped spots concentrate in Chippewa County, Gogebic County, and Houghton County. Every spot on this page appears on the map above with coordinates and access notes.

How many agate spots are mapped in Michigan?+

7 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 agate in Michigan?+

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. 5 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 agate

More minerals to hunt in Michigan

Hunt agate in Michigan 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.