Minerals from Midwest, USA

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

Calcite and Sphalerite from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Calcite and Sphalerite on etched Fluorite from Elmwood Mine, Carthage, Smith County, Tennessee

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

Calcite in Quartz Geode from Keokuk, Lee County, Iowa

Calcite in Quartz Geode from Hamilton, Hancock County, Illinois

Calcite in Quartz geode from Keokuk Geode District, near Hamilton, Hancock County, Illinois

Calcite in Quartz Geode from Keokuk, Lee County, Iowa

Calcite including twinned crystals from Rockway Quarry, 4.5 km ESE of Colonial Heights, Sullivan County, Tennessee

Calcite on Amethyst Quartz from Guanajuato Silver Mining District, Guanajuato, Mexico

Calcite on Barite from Denton Mine, Harris Creek District, Hardin County, Illinois

Calcite on Barite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Barite from Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Calcite on Barite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Calcite from Cave-in-Rock, Hardin County, Illinois

Calcite on Calcite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Calcite from Badlands, South Dakota

Calcite on Calcite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Calcite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Calcite from Pershing Mine, Attica, Marion County, Iowa

Calcite on Calcite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Calcite from Oskaloosa area coal mines, Mahaska County, Iowa

Calcite on Calcite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Calcite from Pershing Mine, Attica, Marion County, Iowa

Calcite on Calcite from Oskaloosa area coal mines, Mahaska County, Iowa

Calcite on Calcite from Cave-in-Rock District, Hardin County, Illinois

Calcite on Calcite from Meshberger Quarry, Columbus, Bartholomew County, Indiana

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

Calcite on Calcite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Calcite from Oskaloosa area coal mines, Mahaska County, Iowa

Calcite on Chalcopyrite from Milliken Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite from Black Rock, Arkansas

Calcite on Dolomite from Fogle Quarry, Ottawa, Franklin County, Kansas

Calcite on Dolomite from Mid-Continent Mine, Picher, Ottawa County, Oklahoma

Calcite on Dolomite from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Calcite on Dolomite from Black Rock Quarry, Lawrence County, Arkansas

Calcite on Dolomite from Corydon Crushed Stone Quarry, Harrison County, Indiana

Calcite on Dolomite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Chalcopyrite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Chalcopyrite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Chalcopyrite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Chalcopyrite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Chalcopyrite and Galena from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Galena and Chalcopyrite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Dolomite with Pyrite from Meridian Quarry, Black Rock, Lawrence County, Arkansas

Calcite on Dolomite with Pyrite from Meridian Quarry, Black Rock, Lawrence County, Arkansas

Calcite on Dolomite with Pyrite from Meridian Quarry, Black Rock, Lawrence County, Arkansas

Calcite on Dolomite with Pyrite from Meridian Quarry, Black Rock, Lawrence County, Arkansas

Calcite on Fluorite from Ozark-Mahoning Mine, Hardin County, Illinois

Calcite on Fluorite from Cave-in-Rock, Hardin County, Illinois

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

Calcite on Fluorite from Denton Mine, Hardin County, Illinois

Calcite on Fluorite from Rosiclare Level, Minerva #1 Mine, Hardin County, Illinois

Calcite on Fluorite from Sub-Rosiclare Level, Minerva #1 Mine, Cave-in-Rock District, Hardin County, Illinois

Calcite on Fluorite from Ozark-Mahoning No. 1 Mine, Cave-in-Rock, Hardin County, Illinois

Calcite on Fluorite from Bethel Level, Minerva #1, Cave-in-Rock District, Hardin County, Illinois

Calcite on Fluorite from Minerva #1 Mine, Hardin County, Illinois

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

Calcite on Fluorite from Ozark-Mahoning Mine, Cave-in-Rock District, Hardin County, Illinois

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

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

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

Calcite on Fluorite from Elmwood Mine, Carthage, Smith County, Tennessee

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

Calcite on Fluorite from Denton Mine, Harris Creek District, Hardin County, Illinois

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

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

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

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

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

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

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

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

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

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

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

Calcite on Fluorite from Minerva #1 Mine, Sub-Rosiclare Level, Cave-in-Rock District, Hardin County, Illinois

Calcite on Fluorite from Rosiclare Sub-District, Hardin County, Illinois

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

Calcite on Fluorite from Denton Mine, Harris Creek District, Hardin County, Illinois

Calcite on Fluorite from Denton Mine, Sub-Rosiclare Level, Harris Creek District, Hardin County, Illinois

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

Calcite on Fluorite from Denton Mine, Harris Creek District, Hardin County, Illinois

Calcite on Fluorite from Denton Mine, Harris Creek District, Hardin County, Illinois

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

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

Calcite on Fluorite from Denton Mine, Sub-Rosiclare Level, Harris Creek District, Hardin County, Illinois

Calcite on Fluorite from Annabel Lee Mine, Harris Creek District, Hardin County, Illinois

Calcite on Fossilized Coral from Madison, Jefferson County, Indiana

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

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

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

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

Calcite on Galena from Milliken Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Hematite with Manganoan Calcite from Montreal Mine, Gogebic Iron Range, Iron County, Wisconsin

Calcite on Limestone from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Limestone from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Limestone from Paul Frank Quarry, North Vernon, Jennings County, Indiana

Calcite on Marcasite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Marcasite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Marcasite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Marcasite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Native Copper from Keweenaw Peninsula Copper District, Michigan

Calcite on Pyrite from 28 Stope, Fletcher Mine, Reynolds County, Missouri

Calcite on Pyrite from Shullsburg District, Lafayette County, Wisconsin

Calcite on Pyrite from I-80 Quarry, East Moline, Rock Island County, Illinois

Calcite on Pyrite from Sweetwater Mine, West Orebody, Viburnum Trend, Reynolds County, Missouri

Calcite on Pyrite from Rensselaer Quarry, Pleasant Ridge, 6 km east of Rensselaer, Jasper County, Indiana

Calcite on Pyrite from Viburnum Trend, Reynolds County, Missouri

Calcite on Pyrite and Chalcopyrite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Pyrite, Galena, Dolomite from Sweetwater Mine, Viburnum Trend, Reynolds County, Missouri

Calcite on Quartz from Hoosier Stone and Concrete Corp. Quarry, near Salem, Washington County, Indiana

Calcite on Quartz from Hoosier Stone and Concrete Corp. Quarry, near Salem, Washington County, Indiana

Calcite on Quartz from construction site, Interstate 75 at exit 62, Renfro Valley, Rockcastle County, Kentucky

Calcite on Sphalerite from Mid-Continent Mine, Picher, Ottawa County, Oklahoma

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

Calcite on Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Sphalerite from Denton Mine, Sub-Rosiclare Level, Harris Creek District, Hardin County, Illinois

Calcite on Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Sphalerite and Dolomite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite on Sphalerite with Chalcopyrite from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

Calcite on Sphalerite with Chalcopyrite from Tri-State Lead-Zinc Mining District, near Joplin, Jasper County, Missouri

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

Calcite over Barite from Montreal Mine, Gogebic Iron Range, Iron County, Wisconsin

Calcite over Calcite from Marion City, Linn County, Iowa

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

Calcite over Fluorite from Minerva Mine, Cave-in-Rock District, Hardin County, Illinois

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

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

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

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

Calcite over Fluorite from Denton Mine, Harris Creek District, Hardin County, Illinois

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

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

Calcite over Fluorite from Denton Mine, Harris Creek District, Hardin County, Illinois

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

Calcite over Marcasite and Sphalerite from Shullsburg District, Lafayette County, Wisconsin

Calcite over Sphalerite from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite over Sphalerite and Marcasite from American Zinc Mine, Shullsburg District, Lafayette County, Wisconsin

Calcite over Sphalerite with Bitumen from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite pseudomorph after Aragonite on Fluorite from Cave-in-Rock, Hardin County, Illinois

Calcite pseudomorph after Halite from Glass Mountains, 13 km northwest of Fairview, Major County, Oklahoma

Calcite Stalactite from Wyandotte Cave, Crawford County, Indiana

Calcite twin from Tri-State District, Baxter Springs, Kansas

Calcite twinned crystals from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite twinned crystals from Elmwood Mine, Carthage, Smith County, Tennessee

Calcite twinned crystals with Marcasite inclusions from Linwood Mine, Buffalo, Scott County, Iowa

Calcite var. Manganoan Calcite on Quartz from Montreal Mine, Gogebic Iron Range, Iron County, Wisconsin