Calcite is one of the most common minerals in the earth’s crust – especially associated with sedimentary rocks. This page highlights locations and the U.S. and other countries with especially nice crystals.
For more detail on the localities, use the Mindat links under the photos.
Arizona
Calcite in spheres and elongated scalenohedral crystals. Queen Mine, Bisbee, Arizona. Purchased in Bisbee in 2000. See https://www.mindat.org/loc-3318.html
California
Blue calcite, famous from the Crestmore Quarry in Riverside, California. It mostly an industrial park now. See https://www.mindat.org/loc-3449.html
Colorado
Calcite with dolomite and quartz. From a small mine south of Ouray, Colorado. Collected in August, 1980. FOV about 2 cmCalcite from La Junta, Otero Co., Colorado obtained in 2000. See https://www.mindat.org/loc-5907.html
Connecticut
Calcite with Goethite from the Cinque Quarry, East Haven, CT. See https://www.mindat.org/loc-6789.htmlCalcite (iridescent) on barite, Rt. 9 (Ellis St. and Rt. 72 interchange (Rt 72 bypass), (no longer exists) New Britain, Hartford Co., Connecticut. FOV 3 cm. Collected by Steve Garza.Calcite in large scalenohedrons and smaller needle-like crystals. Rt. 9 (Ellis St. and Rt. 72 interchange (Rt 72 bypass), (no longer exists) New Britain, Hartford Co., Connecticut. Collected by Steve Garza.
Calcite on natrolite from the Wren Quarry, Benton Co., Oregon. Received in a trade in 2000.Calcite with minor analcime, Gopher Valley Quarry, Yamhill Co., Oregon. Obtained in 2001. See https://www.mindat.org/loc-65173.htmlCalcite in basalt from Burnt Cabin Creek, Spray, Wheeler Co., Oregon. From Lanny Ream. 2 cm FOV.
Pennsylvania
Calcite with pyrite, Oak Hall Quarry, Centre Co., Pennsylvania
Calcite with striated faces on marble, from the Conklin Quarry, Lime Rock, Lincoln Co., Rhode Island. 3 cm FOV. Collected Steve Garza.Calcite pock in white marble, Lime Rock, Lincoln Co., Rhode Island. Collected Steve Garza.Green calcite from the Conklin Quarry, 2 cm view.
Calcite in large brown crystals, close to the Johannes orebody, Malmberget, Lappland, Sweden. Received in trade summer 2005 from Aksel Österlöf, Luleå, Sweden. Collected May 16, 2001.