Sweetwater County, WY Mining Claims & Land Ownership Map
Current BLM claim data, land ownership layers, and rockhounding-ready backcountry navigation for Sweetwater County, WY — built for the field.
Sweetwater County encompasses the vast, high-desert basin of southwestern Wyoming, stretching across the Green River Basin, the Red Desert, and the Leucite Hills. Internationally celebrated among rockhounds for world-famous Turritella agate, Sweetwater moss agates, and fossilized wood, the region draws gemstone collectors, lapidary artists, and desert prospectors. Expansive public domain lands managed primarily by the BLM Rock Springs Field Office offer open territory for surface collecting and small-scale mineral scouting.
Geologically, Sweetwater County features a dynamic environment shaped by Eocene Lake Gosiute lacustrine deposits, Tertiary volcanic ash flows, and Quaternary desert weathering. Ancient lakebed sediments of the Green River Formation produced dense fossiliferous silicified snail beds, forming prized dark-brown Turritella agate. In surrounding desert washes, weathering of volcanic and sedimentary strata yields translucent Sweetwater agates with delicate dendritic manganese inclusions, chalcedony geodes, jasper, and petrified wood.
While large-scale commercial operations extract trona and coal, hobbyist prospectors explore dry washes for alluvial placer gold and collectible mineral specimens. Navigating Sweetwater County rockhounding requires clear land status tracking. While vast desert tracts are open public domain, specific areas contain active unpatented claims, private checkerboard railroad lands, and state trust parcels. Referencing an active Sweetwater County mining claims map enables field collectors and prospectors to check current federal BLM records, verify open public domain ground, and explore desert basins with complete confidence.
6,913
Active Sweetwater County, WY Claims
54,188
Historical Sweetwater County, WY Claims
430
Sweetwater County, WY Rockhound Hotspots
61,531
Total Sweetwater 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 →
Eocene Lake Gosiute & Turritella Agate: 50-million-year-old lacustrine Green River Formation beds preserved vast quantities of Elimia tenera fossil snails, creating world-famous Turritella agate.
Sweetwater Moss Agate Deposits: Hydrothermal silica and manganese solutions formed prized Sweetwater moss agates in desert gravels, featuring delicate tree-like dendritic patterns.
Leucite Hills Volcanic Complex: Rare potassium-rich volcanic eruptions created igneous features containing unique minerals like leucite, wyomingite, and phlogopite mica.
Desert Washes & Alluvial Placers: Flash floods and arid erosion weathered surrounding mountain ranges, concentrating localized placer gold and petrified wood across dry desert washes.
BLM Rock Springs Field Office Access: Millions of acres of public domain land managed by the BLM offer open territory for non-commercial agate hunting, dry washing, and metal detecting outside active claims.
Official Prospecting Resources for Sweetwater County, WY
Sweetwater County Clerk What it is: The official county recording portal and public land document archive for Sweetwater County (located in Green River, WY)
Use case: Recording local unpatented placer and lode mining claim location certificates, filing annual Affidavits of Assessment Work, and searching local land records.
What it is: The official Bureau of Land Management field office portal overseeing public domain surface management and mineral entry across Sweetwater County.
Use case: Checking BLM surface management regulations, verifying public domain land availability around the Red Desert and Green River Basin, and inspecting active federal claims.
What it is: The state geological survey portal providing technical publications, geologic maps, and rockhounding site details for Sweetwater County.
Use case: Researching Turritella and Sweetwater agate geology, locating public collecting grounds in southwestern Wyoming, and downloading digital geologic maps.
Plans
Basic
$0/mo
Local Miner
$29.99/yr
Everything in Free, plus:
Adventure Miner
$49.99/yr
Everything in Free, plus:
Rockhound Enthusiast
$29.99/yr
Gem & crystal hunters, Midwest/East users — everything in Free, plus:
Pro Prospector
$99.99/yr
Everything in Free, plus:
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 6,913 active and 54,188 historical mining claims in Sweetwater County, WY, plus 430 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 Sweetwater County. Other Wyoming counties with a dedicated page: Fremont County, Carbon County, Park County and Albany County.
Sweetwater County Clerk is Sweetwater 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.