Minerals from Midwest, USA

Fluorite with Galena, Calcite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Hydrocarbon coating from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Hydrocarbon inclusions from Cave-in-Rock District, Hardin County, Illinois

Fluorite with hydrocarbon inclusions (cleavage) from Cave-in-Rock District, Hardin County, Illinois

Fluorite with internal color zoning from Rosiclare Level, Annabel Lee Mine, Harris Creek District, Hardin County, Illinois

Fluorite with internal phantom from Minerva Mine, Hardin County, Illinois

Fluorite with iridescent luster from Auglaize Quarry, Junction, Paulding County, Ohio

Fluorite with Marcasite inclusions from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Marcasite inclusions from East Faircloth Vein, Mundy's Landing, eastern shore of the Kentucky River, 12 km NE of Harrodsburg, Woodford County, Kentucky

Fluorite with minor Bitumen from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with minor Calcite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Calcite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Calcite and Barite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Calcite and Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Chalcopyrite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Chalcopyrite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Chalcopyrite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with minor Dolomite from Elmwood Mine, Carthage. Smith County, Tennessee

Fluorite with minor Sphalerite from Minerva No. 1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with phantom inclusions from Cave-in-Rock District, Hardin County, Illinois

Fluorite with phantom-growth zoning from Auglaize Quarry, Junction, Paulding County, Ohio

Fluorite with Pyrite from Pint's Quarry, Raymond, Black Hawk County, Iowa

Fluorite with Pyrite from Denton Mine, Harris Creek District, Hardin County, Illinois

Fluorite with Pyrite from Pint's Quarry, Raymond, Black Hawk County, Iowa

Fluorite with Pyrite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Pyrite inclusions from Minerva #1 Mine, Rosiclare Level, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Quartz from Rosiclare District, Hardin County, Illinois

Fluorite with Quartz from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Quartz and Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Hill-Ledford Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Annabel Lee Mine, Harris Creek District, Hardin County, Illinois

Fluorite with Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Denton Mine, Harris Creek District, Hardin County, Illinois

Fluorite with Sphalerite from Rosiclare Sub-District, Hardin County, Illinois

Fluorite with Sphalerite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Mahoning Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite with Sphalerite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite and Calcite from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite and Calcite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite and Galena from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite and Quartz from Cave-in-Rock District, Hardin County, Illinois

Fluorite with Sphalerite inclusions plus Calcite from Gordonsville Mine, Carthage, Smith County, Tennessee

Fluorite with spherical Barite and Bitumen inclusions from Minerva #1 Mine, Rosiclare Level, Cave-in-Rock District, Hardin County, Illinois

Fluorite, Barite, Bitumen from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite, Barite, Sphalerite from Minerva #1 Mine, Rosiclare Level, Cave in Rock District, Hardin County, Illinois

Fluorite, Barite, Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite, Calcite Bitumen from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite, Calcite, Bitumen from Minerva No. 1 Mine, Hardin County, Illinois

Fluorite, Calcite, Chalcopyrite from Ozark-Mahoning #1 (Minerva #1) Mine, Harris Creek District, Hardin County, Illinois

Fluorite, Calcite, Dolomite, Sphalerite over Quartz from Elmwood Mine, Carthage. Smith County, Tennessee

Fluorite, Calcite, Pyrite from Cave-in-Rock District, Hardin County, Illinois

Fluorite, Calcite, Pyrite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite, Calcite, Sphalerite from Cave-in-Rock District, Hardin County, Illinois

Fluorite, Chalcopyrite, Bitumen from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Fluorite, Chalcopyrite, Bitumen from Cave-in-Rock District, Hardin County, Illinois

Fluorite, Chalcopyrite, Calcite from Cave-in-Rock District, Hardin County, Illinois

Fluorite, Quartz, Sphalerite from Rosiclare District, Hardin County, Illinois

Fluorite, Quartz, Sphalerite over Calcite from Elmwood Mine, Carthage. Smith County, Tennessee

Fluorite, Sphalerite on Quartz from Cave-in-Rock District, Hardin County, Illinois

Fluorite, Sphalerite, Dolomite from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite, Sphalerite, Galena and Quartz from Cave-in-Rock District, Hardin County, Illinois

Fluorite, Sphalerite, Quartz from Rosiclare District, Hardin County, Illinois

Fluorite, Sphalerite, Quartz from Elmwood Mine, Carthage, Smith County, Tennessee

Fluorite, Sphalerite, Quartz from Cave-in-Rock District, Hardin County, Illinois

Fossil Fern from Pennsylvanian Mazon Creek region, Carbondale Formation, Braidwood, Will County, Illinois

Fossilized Bacculite from Black Hills, South Dakota

Fossilized Discoscaphites Conradi from Fox Hills Formation, Pennington County, South Dakota

Fossilized Discoscaphites Conradi from Fox Hills Formation, Pennington County, South Dakota

Fossilized Discoscaphites Conradi from Fox Hills Formation, Pennington County, South Dakota

Fossilized Discoscaphites Conradi from Fox Hills Formation, Pennington County, South Dakota

Fossilized Discoscaphites Conradi from Fox Hills Formation, Pennington County, South Dakota

Fossilized Discoscaphites Conradi from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nebrascensis from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nebrascensis from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nebrascensis from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nebrascensis from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nicoletti from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nicoletti from Fox Hills Formation, Pennington County, South Dakota

Fossilized Hoploscaphites Nodosus from Pierre Formation, Dawson County, South Dakota

Fossilized Sphenodiscus from Fox Hills Formation, Pennington County, South Dakota

Fossilized Sphenodiscus from Fox Hills Formation, Pennington County, South Dakota

Fossilized Sphenodiscus from Fox Hills Formation, Pennington County, South Dakota

Fossilized Sphenodiscus from Fox Hills Formation, Pennington County, South Dakota

Gadolinite from Barringer Hill, Llano County, Texas

Galena from Galena, Jo Daviess County, Illinois

Galena from Tulsa Quapaw Mine, Treece, Kansas

Galena from Tri-State Lead-Zinc Mining District, Treece, Cherokee County, Kansas

Galena from Treece, Kansas

Galena from Mid-Continent Mine, Picher, Ottawa County, Oklahoma

Galena from Mid-Continent Mine, Picher, Ottawa County, Oklahoma

Galena from Baxter Springs, Tri-State District, Kansas

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Gordon Mine, Tri-State District, Joplin, Missouri

Galena from West Fork Mine, Reynolds County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Buick Mine, Bixby, Viburnum Trend, Iron County, Missouri

Galena from G10 Area, South End, Sweetwater Mine, Reynolds County, Missouri

Galena from South End, Sweetwater Mine, Reynolds County, Missouri

Galena from Buick Mine, Bixby, Viburnum Trend, Iron County, Missouri

Galena from South End, Sweetwater Mine, Reynolds County, Missouri

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Galena from Galena, Jo Daviess County, Illinois

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Galena from Galena, Tri-State District, Kansas

Galena from Baxter Springs, Cherokee County, Kansas

Galena from Gill Mine, Galena, Jo Daviess County, Illinois

Galena from Mid-Continent Mine, Cherokee County, Kansas

Galena from Mid-Continent Mine, Picher, Ottawa County, Oklahoma

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Fletcher Mine, Reynolds County, Missouri

Galena from West Fork Mine, Reynolds County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Owl Mine, Baxter Springs, Cherokee County, Kansas

Galena from Blue Goose Mine No. 1, Commerce, Ottawa County, Oklahoma

Galena from Blue Goose Mine No. 1, Commerce, Ottawa County, Oklahoma

Galena from Blue Goose Mine No. 1, Commerce, Ottawa County, Oklahoma

Galena from Blue Goose Mine No. 1, Commerce, Ottawa County, Oklahoma

Galena from Galena, Cherokee County, Kansas

Galena from Picher District, Ottawa County, Oklahoma

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Galena from Viburnum Trend, Missouri

Galena from Galena Mining District, Jo Davies County, Illinois

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Galena from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Galena from Tri-State Mining District, Douglass, Butler County, Kansas

Galena from Viburnum Trend, Reynolds County, Missouri

Galena from Cave-in-Rock District, Hardin County, Illinois

Galena from Tri-State Lead Mining District, Baxter Springs, Cherokee County, Kansas

Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri