ncat JL0275 Dioptase, Calcite, Christmas Mine, Gila Co., Arizona, USA October 15, 2019 Steve Arizona North and Central Americas United States Click for full sized image…
North and Central Americas Ohio United States ncat Fluorite, Calcite, Marblehead Quarry, Marblehead, Ohio September 23, 2019
Cumbria England United Kingdom 1307 Calcite, Winscales Mine, Egremont, Cumbria, England September 22, 2019
