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.
Calcite with dolomite and quartz. From a small mine south of Ouray, Colorado. Collected in August, 1980. FOV about 2 cm
Calcite (iridescent) on barite, Rt. 9 (Ellis St. and Rt. 72 interchange (Rt 72 bypass), New Britain, Hartford Co., Connecticut. FOV 3 cm. 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
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
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
Red Cliff Campground in Gallatin Co., MT – now off-limits to collecting
Red Cliff on Mindat
Calcite with pyrite, Oak Hall Quarry, Centre Co., Pennsylvania
Oak Hall Quarry on Mindat
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.
Conklin Quarry on Mindat
Sand Calcite, Rattlesnake Butte, Jackson Co., South Dakota. Calcite formed in a sandy environment.
Rattlesnake Butte on Mindat
Calcite in parallel crystals, Gordonsville mine, Elmwood district, Smith Co., Tenn. Obtained in 1998.
Gordonsville Mine on Mindat
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
Egremont is long famous for chisel-shaped calcite crystals
Egremont on Mindat
Calcite in simple rhombic crystals from the Ojuela Mine, Mapimi, Durango, Mexico. 3 cm FOV.
Ojuela Mine on Mindat
Cobaltian Calcite, Bou Azzer district, Tazenakht, Ouarzazte Prov., Souss-Mass-Draâ Region, Morocco
Bou Azzer on Mindat
Manganoan Calcite (pink elongate scalenohedrons), Pachapaqui District, Bolognesi Province, Dept. of Ancash, Peru.
Pachapaqui on Mindat
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