4212 Calcite, First Sovietsky Mine, D’alnegorsk, Russia October 4, 2019 Steve Europe Russia Ambros Kissling
California North and Central Americas United States ncat JP1024, Cinnabar, Calcite, Great Eastern and Mount Jackson Mine (Sonoma Mine; Sonoma Quicksilver Mines; Guerneville Mine; Great Eastern Mine; Mount Jackson Mine), Guerneville, Guerneville District, Coast Range, Sonoma Co., California, USA September 23, 2019
Australasia Australia South Australia ncat JP562 Calcite, Quartz, Mutooroo Mine, Pine Creek – Mutooroo area, Mingary, Olary Province, South Australia September 23, 2019
Australasia Australia South Australia ncat JP1010 Malachite, Calcite, Marree, Northeast, South Australia September 23, 2019
