Green River

Green River is the Sweetwater County seat in southwestern Wyoming, sitting on I-80 along the river of the same name. The batch coordinate lands on the town itself rather than one named mine or outcrop — this is a gateway to surrounding BLM public land, not a single pinned dig site. The Eocene Green River Formation and the overlying Bridger Formation, both well exposed across Sweetwater County, shed silicified wood, chalcedony, jasper, and agate into desert gravels for miles around town. Nearby Cedar Mountain and Firehole Canyon are documented for a different, well-known Wyoming specialty — small pyrope garnets and chromian diopside found in anthills on the Bridger Formation — which confirms this general area is genuinely mineral-rich, even though it's a different specimen than this listing's agate/jasper focus.

Green River town sits on I-80 in Sweetwater County. Surrounding BLM land is reached via unpaved county and BLM roads off US-30/191; a high-clearance vehicle is recommended for backcountry gravel benches. No single named trailhead is tied to this coordinate — this is regional public land, not one dig site.

General-area inference: surface picking on exposed gravel and wind-deflated desert pavement is the standard method for agate/jasper/silicified wood across this part of Wyoming's Red Desert. No digging or heavy equipment needed for float material.

This is BLM land, administered locally by the BLM Rock Springs Field Office. Confirm current collecting guidance directly through BLM Wyoming rather than relying on any third-party quantity figures. Don't confuse this locality with the separately named "Sweetwater agate field," which lies roughly 150 miles northeast along the Sweetwater River near Riverton and South Pass City — same county-name root, different place.