ChalcedonyIA
Ames
Ames is a documented mineral occurrence near IA. Reported specimens include Chalcedony, Fossils. Verify land access and collecting rules before visiting.
View detailsAgate & Jasper rockhounding sites in Iowa
Where to find agates and jasper in the U.S. — Lake Superior beaches, Ellensburg blue, Wyoming Sweetwater fields, Texas Terlingua, Mojave desert beds, and colorful chalcedony shorelines.
23 agate & jasper destinations in Iowa.
Rockhounding sites in Iowa — agate & jasper: 23 spots in our directory. Sort live from your phone with near me, or browse all U.S. agate & jasper rockhounding sites and the Iowa state page.
Agate & Jasper collecting in Iowa
Where to find agates and jasper in the U.S. — Lake Superior beaches, Ellensburg blue, Wyoming Sweetwater fields, Texas Terlingua, Mojave desert beds, and colorful chalcedony shorelines.
We currently document 23 agate & jasper collecting sites in Iowa. Each listing includes original descriptions, visitor notes, and last-updated dates when available.
What to know before you collect
Agate & Jasper destinations in Iowa vary widely in access, season, and legality. Some are official recreation areas; others are informal gravel bars. Read the access and safety sections on each listing — never assume collecting is allowed without checking current signage.
For trip planning beyond this filter, browse the full Iowa state page, our guides, or use near me to sort by distance from your location.
What to pack for agate & jasper hunting
Gravel bars, desert washes, and dry lake beds — compared gear for agate and jasper field days.
Disclosure: Gear links may earn a commission as an Amazon Associate — at no extra cost to you. Learn more.
AgateIA
Bellevue
Bellevue is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate, Moss agate, Carnelian, Moonstone, Jasper, Petrified coral. Verify land access and collecting rules before visiting.
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Benton County
Benton County is a documented mineral occurrence near IA. Reported specimens include Coldwater Agate. Verify land access and collecting rules before visiting.
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Black Hawk County
Black Hawk County is a documented mineral occurrence near IA. Reported specimens include Coldwater Agate. Verify land access and collecting rules before visiting.
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Bremer County
Bremer County is a documented mineral occurrence near IA. Reported specimens include Coldwater Agate. Verify land access and collecting rules before visiting.
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Burlington (geodes)
Burlington (geodes) is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate, Quartz crystals, Geodes. Verify land access and collecting rules before visiting.
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Burlington (lake Superior Agate)
Burlington (Lake Superior agate) is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate. Verify land access and collecting rules before visiting.
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Dubuque
Dubuque is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate, Moss Agate, Oolitic agates, Moonstone, Jasper, Petrified wood, Fossils. Verify land access and collecting rules before visiting.
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Emmetsburg
Emmetsburg is a documented mineral occurrence near IA. Reported specimens include Agate, Jasper, Petrified wood. Verify land access and collecting rules before visiting.
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Fayette County
Fayette County is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate. Verify land access and collecting rules before visiting.
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Graettinger
Graettinger is a documented mineral occurrence near IA. Reported specimens include Agate, Jasper, Petrified wood. Verify land access and collecting rules before visiting.
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Guttenburg
Guttenburg is a documented mineral occurrence near IA. Reported specimens include Jasper. Verify land access and collecting rules before visiting.
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Keota
Keota is a documented mineral occurrence near IA. Reported specimens include Agate. Verify land access and collecting rules before visiting.
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La Porte City
La Porte City is a documented mineral occurrence near IA. Reported specimens include Agate. Verify land access and collecting rules before visiting.
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Lake Superior Agate Beaches Iowa
Glacial till along northwest Iowa lakes occasionally yields Lake Superior agate transported from northern source regions.
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Mount Pleasant
Mount Pleasant is a documented mineral occurrence near IA. Reported specimens include Chert, Geodes. Verify land access and collecting rules before visiting.
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Muscatine (agate)
Muscatine (agate) is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate, Moss Agate, Chalcedony, Quartz crystals. Verify land access and collecting rules before visiting.
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Nevada
Nevada is a documented mineral occurrence near IA. Reported specimens include Agate. Verify land access and collecting rules before visiting.
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New London
New London is a documented mineral occurrence near IA. Reported specimens include Agate, Jasper. Verify land access and collecting rules before visiting.
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Orient Area
Orient Area is a documented mineral occurrence near IA. Reported specimens include Agate, Quartz crystals, Petrified wood. Verify land access and collecting rules before visiting.
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Red Oak
Red Oak is a documented mineral occurrence near IA. Reported specimens include Chert, Protozoa agate. Verify land access and collecting rules before visiting.
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Shell Rock
Shell Rock is a documented mineral occurrence near IA. Reported specimens include Lake Superior Agate. Verify land access and collecting rules before visiting.
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Skunk River Gravels Near Mount Pleasant
Skunk River gravels near Mount Pleasant is a documented mineral occurrence near IA. Reported specimens include Agate. Verify land access and collecting rules before visiting.
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