8125 Posnjakite, Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, Cumbria, England October 5, 2019 Steve Cumbria England United Kingdom ex Bernie and Margaret Day Collection
Scotland United Kingdom 4247 Lautenthalite, Posnjakite, Serpierite, Meadowfoot Smelter, Wanlockhead, Dumfriesshire, Scotland October 4, 2019
Australasia Australia Tasmania 2461 Posnjakite, Hercules Mine, Williamsford, Tasmania September 22, 2019
Cornwall England United Kingdom ncat JP2520 Posnjakite, South Wheal Basset, Carnkie, Carn Brea, Cornwall, England, UK October 8, 2019
