4748 Cacoxenite, Strengite, Sitio do Castelo Mine (Folgosinho quarry), Folgosinho, Gouveia, Guarda District, Portugal October 5, 2019 Steve Europe Portugal Helmut Braith
Australasia Australia South Australia ncat VHD10, Cyrilovite, Strengite, Kidwellite, Iron Monarch Mine, Iron Knob, South Australia November 17, 2019
Australasia Australia South Australia ncat JP Kidwellite, Strengite, Iron Monarch open cut, Iron Knob, Middleback Range, Eyre Peninsula, South Australia October 4, 2024
Alabama North and Central Americas United States 2178 Strengite, Cacoxenite, Kidwellite, Rockbridgeite, Vivianite, Indian Mountain, Cherokee Co, Alabama, USA March 23, 2018
Alabama North and Central Americas United States ncat JP3661, Strengite, Kidwellite, Indian Mountain, Cherokee Co., Alabama, USA September 23, 2019
