Rocks & minerals reported in Iowa
20 rocks, minerals, gemstones, and fossils reported across 49 mapped rockhounding spots in Iowa. Each entry links to a field-ID guide; the state-specific links open the list of spots known to produce that material in Iowa.
Most-reported in Iowa
Ranked by the number of Iowa spots in this dataset that mention each material.
Geodecommonsedimentary · Mohs 7white, gray, brown
Agatecommonmineral · Mohs 6.5-7white, gray, blue
Lake Superior Agatecommonmineral · Mohs 6.5-7red, orange, yellow
Jaspercommonmineral · Mohs 6.5-7red, yellow, brown
Keokuk Geodecommonmineral · Mohs 7clear, white, gray
Petrified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Calcitecommonmineral · Mohs 3white, colorless, yellow
Chalcedonycommonmineral · Mohs 6.5-7white, gray, blue
Limonitecommonmineral · Mohs 4-5.5yellow, brown, reddish-brown
Moss Agatecommonmineral · Mohs 6.5-7white, green, brown
Pyritecommonmineral · Mohs 6-6.5brass-yellow, pale-gold
Quartzcommonmineral · Mohs 7colorless, white, gray
Where in Iowa to find each
State-specific spot lists. Each link opens the Iowa subset of mapped rockhounding spots for that mineral.
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