Fremont County, WY Mining Claims & Land Ownership Map
Current BLM claim data, land ownership layers, and rockhounding-ready backcountry navigation for Fremont County, WY — built for the field.
Fremont County occupies the rugged heart of central Wyoming, anchored by the Wind River Range, the Granite Mountains, and the historic South Pass gold belt. Renowned as the epicenter of Wyoming's 1860s gold rush, the region draws panners, detectorists, and lapidary enthusiasts to historic districts like Atlantic City, Miner's Delight, and Lewiston. Public domain lands managed by the BLM Lander Field Office and the Shoshone National Forest offer expansive mountain and high-desert territory for recreational prospecting outside recorded claim boundaries.
Geologically, Fremont County features ancient Precambrian greenstone belts intruded by granitic batholiths. Hydrothermal activity injected gold-bearing quartz fissure veins into schists and amphibolites, while deep fluvial erosion weathered these hard-rock lodes into alluvial placer gravels along the Sweetwater River, Willow Creek, and Strawberry Creek. Beyond placer gold, the county is world-famous for yielding gem-grade Wyoming nephrite jade ("slicks"), Sweetwater moss agates, jasper, and quartz crystals from weathered metamorphic shear zones and desert washes.
Navigating Fremont County prospecting requires strict spatial boundary tracking. Active unpatented lode and placer claims line proven gold streams and jade grounds, intermingling with private ranches and the Wind River Indian Reservation where collecting is prohibited. Utilizing an active Fremont County mining claims map enables panners, detectorists, and rockhounds to check live federal BLM records, verify open public domain land, and navigate backcountry access routes legally and safely.
7,147
Active Fremont County, WY Claims
54,581
Historical Fremont County, WY Claims
813
Fremont County, WY Rockhound Hotspots
62,541
Total Fremont County, WY Claims & Hotspots
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Save any map area while you have cell service, then navigate active BLM mining claims, land ownership boundaries, and optional layers like elevation contours, roads, and creeks — with zero connectivity out in the field. Offline downloads are included on every paid plan. See plans below →
1867 South Pass Gold Strike: Carissa lode discovery near South Pass City ignited Wyoming's primary gold rush, establishing boomtowns like Atlantic City and Lewiston along the Sweetwater River watershed.
Archean Greenstone Belt Geology: The South Pass mining district is underlain by 2.8-billion-year-old Archean metamorphic schists and greenstones, fractured by gold-bearing quartz fissure veins.
World-Famous Wyoming Nephrite Jade: Metamorphic contact zones in the Granite Mountains and Green Mountains produced North America's premier nephrite jade deposits, yielding wind-polished "slicks" and olive-green boulders.
Sweetwater River Alluvial Placers: Glacio-fluvial carving and desert erosion concentrated heavy placer gold and coarse nuggets in alluvial gravel benches along the Sweetwater River, Willow Creek, and Rock Creek.
Public Domain Access: Vast tracts managed by the BLM Lander Field Office and Shoshone National Forest provide open access for non-powered gold panning, metal detecting, and surface gem collecting outside active claims.
Official Prospecting Resources for Fremont County, WY
Fremont County Clerk - Land Recording Information What it is: The official county recording portal and public land document archive for Fremont County (located in Lander, WY). Use case: Recording local unpatented placer and lode claim location certificates, filing annual Affidavits of Assessment Work (Proof of Labor), and searching courthouse land title records.
BLM Lander Field Office What it is: The official Bureau of Land Management field office portal overseeing public domain surface management and mineral entry across Fremont County. Use case: Verifying open BLM public domain land availability around South Pass and the Granite Mountains, checking 43 CFR 3809 surface management rules, and inspecting active federal claims.
Wyoming State Geological Survey - Gemstones What it is: The state geological survey portal providing technical publications, historical mine maps, and mineral occurrence data for Wyoming gemstones including jade and agates. Use case: Researching South Pass lode mine geology, locating nephrite jade and Sweetwater agate outcrops in Fremont County, and downloading digital geologic maps.
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Staked Maps isn't crowd-sourced guesswork. Active and historical claim boundaries are parsed directly from the Bureau of Land Management's own MLRS/LR2000 case-recordation system — the same records BLM state offices use internally — and kept in sync with our database on a regular schedule. Rockhound Hotspots draw from the USGS Mineral Resources Data System (MRDS), cross-referenced by material so you can see exactly what's been found at a given site. For legal filings, always confirm current status directly with your BLM state office of record; Staked Maps is a research and navigation tool, not a substitute for the official record.
Directly from the Bureau of Land Management's official MLRS/LR2000 case-recordation records, synced into our database on a regular schedule — not scraped or crowd-sourced.
Yes. The free tier gives you the interactive claims map, land ownership overlays, and basemap layers for your current state, auto-detected via GPS — no subscription required. Paid plans add more states plus premium data like full legal descriptions, historical claims, offline downloads, and Rockhound Hotspots.
Active claims currently have valid, in-good-standing filings with the BLM. Historical claims are expired or closed filings — still useful for understanding an area's mining history and past activity.
Free users can search by county. Paid plans add search by claim serial number, plus each claim's full legal (aliquot) description and BLM records link.
A premium map layer of known mineral and gem collecting sites — sourced from USGS records and labeled by material where available (e.g. turquoise, opal, jasper) — for rockhounds looking for their next find.
Staked Maps currently tracks 7,147 active and 54,581 historical mining claims in Fremont County, WY, plus 813 Rockhound Hotspots — synced on a regular schedule directly from the BLM's own MLRS records.
Yes — the live map covers all of Wyoming, not just Fremont County. Other Wyoming counties with a dedicated page: Carbon County, Sweetwater County, Park County and Albany County.
Fremont County Clerk - Land Recording Information is Fremont County, WY's primary office for filing and researching mining claims — see the Official Filing & Information Links section above for the direct link and more resources.
Information hosted on Staked Maps is compiled from publicly available data streams provided by the Bureau of Land Management (BLM) and relevant state geographic clearinghouses. Staked Maps accepts no liability for the content of this geospatial data, or for the consequences of any real-world exploration, land entry, or staking actions taken on the basis of the information provided via this application interface.
Staked Maps makes no warranty, expressed or implied, including the warranties of merchantability and fitness for a particular purpose, nor assumes any legal liability or responsibility for the pinpoint accuracy, reliability, completeness, latency, or programmatic utility of these geospatial data layers, or for the improper interpretation of these data grids.
These mapping layers and related graphics are visual convenience aids only; they are not legal documents and must never be used as such. The data may not be used to legally determine title, mineral ownership, valid description boundaries, jurisdictional authorities, or land restrictions in place on public or private land. Natural backcountry hazards may or may not be depicted on topographies, and land users are strictly mandated to exercise caution. Federal records are dynamic and change constantly. The end-user is exclusively responsible for validating current land classifications with local BLM field offices and managing compliance accordingly.