1859 Cumengeite, Boleite, Amelia Mine, Santa Rosalia (El Boleo), Boleo District, Mun. de Mulege, Baja California Sur (BC Sur), Mexico September 22, 2019 Steve Mexico North and Central Americas Six crystals/clusters, including a star formed by cumengite crystals epitaxially overgrown on boleite.
Australasia Australia New South Wales 7464 JL0818 Boleite, Daydream Mine, Apollyon Valley, New South Wales July 26, 2021
Mexico North and Central Americas Type Locality 0022 Boleite, Pseudoboleite, Boleo District, Santa RosalĂa, MulegĂ© Municipality, Baja California Sur, Mexico December 9, 2021
Cornwall England United Kingdom 3621 Cumengeite, Padstow Consols, Padstow, Cornwall, England October 3, 2019
Cornwall England United Kingdom 4462 Cumengeite, Penpol Lead Smelter, Point, Penpol, Cornwall, England October 5, 2019