Placer Au |
Alaska |
Alaska |
Placer |
Cassiterite; Gold; Monazite/xenotime; PGE; Zircon |
gold; thorium; yttrium |
Placer Au and PGE |
Alaska |
Alaska |
Placer |
Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
gold; thorium; yttrium |
Placer Au and Sn |
Alaska |
Alaska |
Placer |
Cassiterite; Gold; Monazite/xenotime; PGE; Zircon |
gold; thorium; yttrium |
Placer Au and Ti |
Alaska |
Alaska |
Placer |
Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
gold; thorium; yttrium |
Placer PGE and Au |
Alaska |
Alaska |
Placer |
Cassiterite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
gold; thorium; yttrium |
Kennebec River barrier beaches |
Northeast |
Maine |
Placer |
Garnet; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
garnet gems and abrasives; thorium; yttrium |
Pennsylvania fluvial placers |
Northeast |
Delaware; Maryland; Pennsylvania |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
thorium; yttrium |
Port Leyden mine area |
Northeast |
New York |
Placer |
Ilmenite/rutile/leucoxene; Zircon |
iron |
American River Placers |
Northwest |
California |
Placer |
Gold; PGE |
gold |
Coastal Oregon beach placers |
Northwest |
Oregon |
Placer |
Gold; Ilmenite/rutile/leucoxene; PGE; Zircon |
gold |
Cretaceous heavy-mineral placer sandstones (black sandstones) |
Northwest; North Central; Rocky Mountains |
Montana; North Dakota; South Dakota; Wyoming |
Placer |
Columbite/tantalite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Wolframite/scheelite; Zircon |
gold; iron; thorium; uranium; yttrium |
Gravel Range Mining District |
Northwest |
Idaho |
Placer |
Cassiterite; Gold |
gold; silver |
Idaho Critical Mineral Placers |
Northwest |
Idaho |
Placer |
Columbite/tantalite; Garnet; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
garnet; thorium; yttrium |
Klamath River Placers |
Northwest |
California |
Placer |
Gold; PGE |
gold |
Mount Chopaka |
Northwest |
Washington |
Placer |
Gold; PGE |
gold |
Nevada County Placers |
Northwest |
California |
Placer |
Gold; PGE |
gold |
Oregon stream placers |
Northwest |
Oregon |
Placer |
Gold; Ilmenite/rutile/leucoxene; PGE |
gold |
Trinity County Placers |
Northwest |
California |
Placer |
Gold; PGE |
gold |
Washington Heavy Mineral Placers |
Northwest |
Washington |
Placer |
Columbite/tantalite; Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; PGE; Zircon |
thorium; yttrium |
Yuba River Placer District |
Northwest |
California |
Placer |
Gold; PGE |
gold |
Bald Mountain paleoplacers |
Rocky Mountains |
Wyoming |
Placer |
Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
gold; thorium; yttrium |
Bates Hole area fluvial paleoplacers |
Rocky Mountains |
Wyoming |
Placer |
Monazite/xenotime; Uraninite, autunite-group minerals |
thorium; uranium; yttrium |
Fox Hills Sandstone heavy mineral placers |
Rocky Mountains |
Colorado |
Placer |
Garnet; Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
garnet; thorium; yttrium |
Medicine Bow Mountains |
Rocky Mountains |
Colorado; Wyoming |
Placer |
Monazite/xenotime; Uraninite, autunite-group minerals |
thorium; uranium; yttrium |
Sierra Madre |
Rocky Mountains |
Colorado; Wyoming |
Placer |
Monazite/xenotime; Uraninite, autunite-group minerals |
thorium; uranium; yttrium |
Arkansas River alluvial sands |
South Central |
Arkansas |
Placer |
Ilmenite/rutile/leucoxene |
(none) |
McNairy Sand placers |
South Central |
Kentucky; Mississippi; Missouri; Tennessee |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
thorium; yttrium |
Tertiary Heavy Mineral Sands |
South Central |
Tennessee |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
thorium; yttrium |
Tokio Cretaceous placers |
South Central |
Arkansas; Oklahoma |
Placer |
Ilmenite/rutile/leucoxene |
(none) |
Blue Ridge placers |
Southeast |
Georgia; North Carolina; South Carolina; Tennessee |
Placer |
Gold; Ilmenite/rutile/leucoxene; Monazite/xenotime |
gold; thorium; yttrium |
Fall Zone Placers |
Northeast; Southeast |
Alabama; Delaware; Georgia; Maryland; New Jersey; North Carolina; Pennsylvania; South Carolina; Virginia |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
thorium; yttrium |
Lower Shoreline Placers |
Northeast; Southeast |
Delaware; Florida; Georgia; Maryland; New Jersey; North Carolina; South Carolina; Virginia |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
thorium; yttrium |
Middle Shoreline Placers |
Northeast; Southeast |
Georgia; Maryland; North Carolina; South Carolina; Virginia |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
thorium; yttrium |
Piedmont fluvial placers |
Southeast |
Alabama; Georgia; North Carolina; South Carolina; Virginia |
Placer |
Gold; Monazite/xenotime |
gold; thorium; yttrium |
Puerto Rico Gold-PGE placers |
Southeast |
Puerto Rico |
Placer |
Gold; PGE |
gold |
Puerto Rico shoreline placers |
Southeast |
Puerto Rico |
Placer |
Ilmenite/rutile/leucoxene |
(none) |
Virginia nelsonites |
Southeast |
Virginia |
Placer |
Ilmenite/rutile/leucoxene |
(none) |
Arizona-New Mexico Cretaceous placers |
Southwest |
Arizona; Colorado; New Mexico |
Placer |
Columbite/tantalite; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Zircon |
thorium; uranium; yttrium |
Coal Cliffs |
Southwest |
Utah |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
iron; thorium; yttrium |
Elizabethtown-Baldy Mining District |
Southwest |
New Mexico |
Placer |
Gold; Wolframite/scheelite |
gold |
Kaiparowits placer |
Southwest |
Utah |
Placer |
Columbite/tantalite; Ilmenite/rutile/leucoxene; Monazite/xenotime; Uraninite, autunite-group minerals; Wolframite/scheelite; Zircon |
thorium; uranium; yttrium |
Lake Bonneville Beach Gravels |
Southwest |
Utah |
Placer |
Ilmenite/rutile/leucoxene; Monazite/xenotime; Zircon |
iron; thorium; yttrium |
Ortiz Mountains (Old Placers-New Placers districts) |
Southwest |
New Mexico |
Placer |
Fluorspar; Gold; Wolframite/scheelite |
gold; iron; silver |
Petaca placers |
Southwest |
New Mexico |
Placer |
Columbite/tantalite; Monazite/xenotime; Zircon |
thorium; yttrium |
Precambrian Franklin Mountain tin |
Southwest |
Texas |
Placer |
Cassiterite |
(none) |
Southern California tungsten placers |
Southwest |
California |
Placer |
Gold; Wolframite/scheelite |
gold |
Taylor Creek Mining District |
Southwest |
New Mexico |
Placer |
Cassiterite |
(none) |
Texas beach placer titanium |
Southwest |
Texas |
Placer |
Ilmenite/rutile/leucoxene |
(none) |
White Oaks Mining District |
Southwest |
New Mexico |
Placer |
Fluorspar; Gold; Wolframite/scheelite |
gold |
Mount Baldy mining district |
Southwest |
California |
Placer |
Wolframite/scheelite |
(none) |
Gorman tin district |
Southwest |
California |
Placer |
Cassiterite |
(none) |