United Kingdom Wales 5420 Calcite, Dolyhir Quarry, Old Radnor, Presteigne, Powys, Wales, UK October 2, 2019
New Mexico North and Central Americas United States ncat SE Calcite, Red Cloud copper mine, Gallinas Mountains, Red Cloud District, Lincoln County, New Mexico, USA January 19, 2025
Australasia Australia New South Wales ncat VHD15, Calcite, Ben Lomond, New South Wales November 17, 2019
