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.
Colorado
Calcite with dolomite and quartz. From a small mine south of Ouray, Colorado. Collected in August, 1980. FOV about 2 cm Connecticut
Calcite (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. Rt 9 New Britain on Mindat
Newington, Hartford Co., CT – calcite from a former site where Wendy’s restaurant was located. Collected by Steve Garza. Newington on Mindat
Iowa
Brown (and a few white) calcite crystals coat dark gray limestone (incorrectly labeled as basalt). From a quarry in Oskaloosa, Mahaska Co., Iowa. Oskaloosa Iowa on Mindat
Missouri
Calcite with chalcopyrite, Pea Ridge Iron Mine, Sullivan, Missouri Pea Ridge Iron Mine on Mindat
Calcite and marcasite, Sweetwater mine, Reynolds Co., Missouri Sweetwater Mine on Mindat
Montana
Calcite from the Red Cliff Campground in Gallatin Co., MT – now off-limits to collecting. Red Cliff on Mindat
Pennsylvania
Calcite with pyrite, Oak Hall Quarry, Centre Co., Pennsylvania Oak Hall Quarry on Mindat
Rhode Island
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. Conklin Quarry on Mindat
South Dakota
Sand Calcite, Rattlesnake Butte, Jackson Co., South Dakota. Calcite formed in a sandy environment. Rattlesnake Butte on Mindat
Tennessee
Calcite in parallel crystals, Gordonsville mine, Elmwood district, Smith Co., Tenn. Obtained in 1998. Gordonsville Mine on Mindat
Australia (Queensland)
Calcite (~4 cm long, brownish-yellow) with quartz xl., Biggenden, Queensland, Australia. Biggenden on Mindat
Congo (Dem. Rep.) formerly Zaire
Manganoan Calcite in scalenohedral xls with micro-malachite crystals, Katanga (formerly Shaba Prov.). Katanga on Mindat
England
Egremont is long famous for chisel-shaped calcite crystals Egremont on Mindat
Mexico
Calcite in simple rhombic crystals from the Ojuela Mine, Mapimi, Durango, Mexico. 3 cm FOV. Ojuela Mine on Mindat
Morocco
Cobaltian Calcite, Bou Azzer district, Tazenakht, Ouarzazte Prov., Souss-Mass-Draâ Region, Morocco Bou Azzer on Mindat
Peru
Manganoan Calcite (pink elongate scalenohedrons), Pachapaqui District, Bolognesi Province, Dept. of Ancash, Peru. Pachapaqui on Mindat
Sweden
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. Malmberget on Mindat