United Kingdom Wales 1553 Millerite, Chalcopyrite, Unknown, Eaglebrook Mine, Dyfed, Wales September 22, 2019
Kentucky North and Central Americas United States 9113 JP2755, Millerite, US highway 27 roadcut, Halls Gap, Lincoln Co., Kentucky, USA September 23, 2019
Nevada North and Central Americas United States 0213 Millerite, Calcite, Grays Quarry, Hamilton, Hancock Co., Illinois September 18, 2019
Bridgend United Kingdom Wales 7329 JL3020 Millerite, Park Slip West (Margam Opencast), Cefn Cribwr, Bridgend, Wales, UK December 25, 2020
