0783 Calcite, Agate Creek, Etheridge Shire, Queensland September 20, 2019 Steve Australasia Australia Queensland Cluster of calcite crystals from inside a geode
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