Calcite Twin Minerals

Calcite Twin from Thomasville, Pennsylvania

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

Calcite Twin from Mina La Cuerre, Rionansa, La Florida, Sierra de Arnero, Cantabria, Spain

Calcite Twin and Native Copper from National Mine, Rockland, Ontonagon County, Michigan

Calcite twin crystals from Egremont, West Cumberland Iron Mining District, Cumbria, England

Calcite Twin on Dolomite from Mina La Cuerre, Rionansa, La Florida, Sierra de Arnero, Cantabria, Spain

Calcite twin with Datolite from Barranca del Cobre, Aurora Mine, Chihuahua, Mexico

Calcite twin with Pyrite from Naica District, Saucillo, Chihuahua, Mexico

Calcite twinned crystals from Bigrigg Mine, Egremont, Cumbria, England

Calcite twinned crystals from Thomasville Crushed Stone Quarry, Jackson Township, York County, Pennsylvania

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

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

Calcite twinned crystals on Amethyst Quartz from Alto Uruguai, Rio Grande do Sul, Brazil

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

Calcite twins from Laurel Hill (Snake Hill) Quarry, Secaucus, Hudson County, New Jersey

Calcite twins from Laurel Hill (Snake Hill) Quarry, Secaucus, Hudson County, New Jersey

Calcite Twins from Sokolovskoe Iron Mine, west of Rudnyym, Kustany Oblast, Kazakhstan

Calcite Twins from Mina La Cuerre, Rionansa, La Florida, Sierra de Arnero, Cantabria, Spain

Calcite Twins from Mina La Cuerre, Rionansa, La Florida, Sierra de Arnero, Cantabria, Spain

Calcite Twins from Mina La Cuerre, Rionansa, La Florida, Sierra de Arnero, Cantabria, Spain