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Where to Find Pyrolusite in Utah

Pyrolusite is the principal manganese ore mineral in Utah and shows up as black, fibrous, or massive crusts in the oxidized zones of several iron and copper districts. The Three Kids area near Henderson stretches into northwest Utah's Lakeside Mountains, and small bedded manganese deposits at Erickson Pass in Tooele County carry pyrolusite with psilomelane. The San Rafael Swell exposes manganese-stained sandstone with dendritic pyrolusite on bedding planes, particularly in the Summerville and Morrison formations. Surface specimens are sooty and stain hands and clothing, so bag them separately and rinse before storage.

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

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Every pyrolusite spot we track in Utah

Standout pyrolusite spots in Utah

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

Best counties for pyrolusite in Utah

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

Before you go

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

Pyrolusite in Utah FAQ

Where can you find pyrolusite in Utah?+
The mapped spots concentrate in Grand County, Juab County, and Piute County. Known collecting areas include Erickson Pass manganese beds (Tooele County), San Rafael Swell sandstone dendrites (Emery County), and Lakeside Mountains (Box Elder County). Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many pyrolusite spots are mapped in Utah?+
24 spots across 14 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 pyrolusite in Utah?+
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. 19 of the 24 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.

More minerals to hunt in Utah

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