Permitted Pursuits
Rockhounding

Mining Claims: What Rockhounds, Gold Panners and Detectorists Need to Know (and How to Check)

An unpatented mining claim is still public land, but the minerals it was located for belong, in practice, to the claimant. BLM's own guidance ranges from "collect anything but the claimed mineral" to "generally not allowed," and placer claims almost always cover the gold. Here's what a claim does and doesn't give its holder, what happens if you collect on one, and how to check BLM's MLRS map before you go.

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Under the Mining Law of 1872, anyone can stake a claim to a "locatable" mineral deposit — gold, silver, most metals, many gemstones — on federal land that's open to mineral entry, mostly BLM land and national forests. Claims come in two kinds that matter to a hobbyist:

So an unpatented claim is public land with a private right to its minerals on top. The question for a collector is what that right covers.

What BLM says about collecting on an unpatented claim

SourceWhat it says
BLM Wyoming, Rockhounding on Public Lands (WYNF-0007)Unpatented claims "are still public lands and rockhounders may pursue their hobby on such lands as long as they do not interfere with mining activities or collect locatable minerals or gemstones for which the claim is located." A claim located for jade leaves everything but jade open — but "claimants frequently locate claims for all locatable minerals, in which case rockhounders may not collect any minerals." Patented claims are private land.
BLM national FAQ on rock collecting (February 2024)Collecting reasonable amounts is "generally not allowed" in certain areas, including "where there are active mining claims or other authorized mineral uses."
BLM Oregon/Washington, Rock Collecting Guide (2024)Advises against collecting on a claim without the claimant's consent, notes that not all claims are easy to identify in the field, and says common materials such as chert, petrified wood, obsidian and cinders aren't subject to mining claim location (see our BLM collecting guide).

The three documents don't contradict each other so much as set different defaults. The safe reading is the national one: if a claim is active, don't collect its minerals without the claimant's permission.

Gold panners and detectorists: the claim is almost always for the gold

Placer claims along western rivers and washes are located for gold. Panning, sluicing, dry-washing or detecting for gold on an active placer claim is taking exactly the mineral the claim was made for, whatever BLM office you're dealing with. That's why the classic panning streams carry the strongest warnings: the Applegate River, the washes around the Vulture Mine near Wickenburg, and Lynx Creek on Prescott National Forest. Get the claimant's permission, join a club that holds claims and lets members work them, or pan where the land manager has set ground aside for the public.

What happens if you collect on someone's claim

We found no federal statute that makes walking onto an unpatented claim, or picking up a rock there, a crime in itself, and BLM's guidance doesn't describe one. The risk is the claimant: the claimed minerals are, in BLM Wyoming's words, "for all practical purposes, their private property," so taking them exposes you to a civil claim from the holder. A patented claim is different: it's private land, and the state's trespass law applies like on any other private property. Don't move or damage claim posts and monuments either; they mark the claim under state law, and BLM's mining-claims brochure notes that each state sets its own monument rules.

One more line from BLM Wyoming is worth knowing: "A claim owner may not legally charge fees for recreational use of unpatented claims." A claimant controls the minerals, not your right to hike, camp or look at the scenery on public land.

Where claims can't exist

New claims can't be located on land withdrawn from mineral entry. BLM's brochure lists national parks, national monuments, American Indian reservations, most Bureau of Reclamation projects, military reservations and most wildlife protection areas such as national wildlife refuges. State land and private land aren't open to federal mining claims either. Withdrawal doesn't make collecting legal, though: national parks ban it entirely (see our national parks guide), and claims that existed before a withdrawal can survive it.

How to check for mining claims before you go

  1. 1

    Open BLM's MLRS Research Map

    Go to mlrs.blm.gov/s/research-map. MLRS (the Mineral & Land Records System) replaced the retired LR2000 database and covers claims on both BLM and Forest Service land.

  2. 2

    Turn on the mining claims layer and find your spot

    Look for claims that aren't closed (BLM publishes these as "Mining Claims – Not Closed"). Closed claims are void. Zoom to the wash, hillside or gravel bar you plan to work, or search by township, range and section.

  3. 3

    Remember the map is approximate

    BLM only requires claims to be identified to the quarter section, so that's usually how MLRS maps them. A claim shown on your quarter section may not cover your exact spot — and BLM says the data are "neither legal documents nor land surveys." The exact lines are in the location notice, filed with BLM and the county recorder.

  4. 4

    Read the case if a claim shows up

    Click the claim to see its name, serial number, claimant and whether it's lode or placer. Active claims must pay BLM's annual maintenance fee — $200 per lode claim, or per 20 acres of a placer claim, due September 1, 2026 for the 2027 year — or file a small-miner waiver. Without either, the claim is forfeited and void by law (30 U.S.C. § 28i).

  5. 5

    Look for posts and notices on the ground

    Claims are marked with corner posts or monuments and a location notice, usually at the discovery point. State law sets what's required, and some claims described by legal subdivision have no corner posts at all, so no posts doesn't mean no claim.

  6. 6

    Ask if you're unsure

    Call the BLM field office or Forest Service ranger district for the area. They can't give permission on the claimant's behalf, but they can tell you about public collecting areas, withdrawals and closures.

Collecting near mining claims

Frequently Asked Questions

Can I rockhound on an unpatented mining claim?

Sometimes, but don't assume it. The land is still public, and BLM Wyoming says rockhounds may collect there as long as they don't interfere with mining or take the minerals the claim was located for. BLM's 2024 national FAQ says collecting is generally not allowed where there are active claims. Many claims are located for all locatable minerals. The safe course is to get the claimant's permission.

Is it illegal to pan for gold on someone's mining claim?

Panning for gold on an active placer claim without permission takes the mineral the claim was located for, which BLM describes as, for practical purposes, the claimant's private property. That exposes you to a civil claim from the holder. On a patented claim, which is private land, state trespass law also applies.

How do I find out if land has a mining claim on it?

Use BLM's MLRS Research Map at mlrs.blm.gov/s/research-map and look for claims that aren't closed. It usually maps claims only to the quarter section, so also look for corner posts and location notices on the ground, check the county recorder, or call the BLM field office or ranger district.

What's the difference between a patented and an unpatented claim?

A patented claim has been sold by the government and is private land. An unpatented claim stays federal land; the claimant has the right to its locatable minerals and to use the surface for mining (30 U.S.C. §§ 26, 612).

Can a claim holder charge me to be on their claim?

BLM Wyoming says a claim owner may not legally charge fees for recreational use of an unpatented claim. A claimant can, however, refuse to let you take the claimed minerals, and the owner of a patented claim (private land) can charge for access.

How long does a mining claim last?

As long as the holder pays BLM's annual maintenance fee ($200 per lode claim or per 20 acres of placer claim for the 2027 assessment year, due September 1, 2026) or qualifies for a small-miner waiver. A claim whose fee isn't paid is forfeited and void by law (30 U.S.C. § 28i).

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Disclaimer

Information is provided for general guidance only. Regulations change frequently. Always verify current rules with the official jurisdiction before relying on this information for legal decisions. Permitted Pursuits is not a substitute for official agency guidance. Report an error.

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