- Alabama
Marble - Alabama
Hematite - Alabama
Little River - Alaska
Gold - Arizona
Copper - Arkansas
Quartz Crystal - Arkansas
Bauxite - California
Gold - California
Serpentine - Colorado
Rhodochrosite - Colorado
Yule Marble - Connecticut
Almandine Garnet - D.C.
Potomac Bluestone - Delaware
Sillimanite - Georgia
Staurolite - Illinois
Dolostone - Illinois
Fluorite - Indiana
Wabash River - Indiana
Limestone - Iowa
Geode - Kentucky
Kentucky Agate - Kentucky
Coal - Louisiana
Agate - Massachusetts
Roxbury Puddingstone - Massachusetts
Babingtonite - Massachusetts
Plymouth Rock - Massachusetts
Dighton Rock - Massachusetts
Granite - Massachusetts
Rolling Rock - Michigan
Petoskey Stone - Mississippi
Mississippi Opal - Mississippi
Petrified Wood - Missouri
Mozarkite - Missouri
Galena - Nebraska
Prairie Agate - Nebraska
Platte River - Nevada
Sandstone - Nevada
Silver - New Hampshire
Granite - New Hampshire
Beryl - North Carolina
Granite - North Carolina
Gold - Oklahoma
Hourglass Selenite Crystal - Oklahoma
Rose Rock - Oregon
Thunderegg - Oregon
Oregonite & Josephinite - Rhode Island
Cumberlandite - Rhode Island
Bowenite - South Carolina
Blue Granite - South Dakota
Black Hills Gold - South Dakota
Rose Quartz - Tennessee
Limestone - Tennessee
Agate - Texas
Silver - Texas
Petrified Palmwood - Utah
Copper - Utah
Coal - Vermont
Granite - Vermont
Marble - Vermont
Slate - Vermont
Talc - Virginia
Nelsonite - Washington
Palouse Falls - West Virginia
Bituminous Coal - Wisconsin
Galena - Wisconsin
Red Granite