6040 Diopside, Prehnite, Jeffrey mine, Asbestos, Quebec, Canada October 2, 2019 Steve Canada North and Central Americas Good prismatic crystals of colourless prehnite with green diopside. Ex Brian Shelton Collection.
Canada North and Central Americas 1440 Diopside, Calcite, Yates Uranium Mine, ‘Thorianite Pits’, near Otter Lake, Quebec, Canada September 22, 2019
Europe Switzerland 4677 Prehnite, Epidote, Gneiss quarries, Arvigo, Calanca Valley, Misox, Grischun, Switzerland October 5, 2019
North and Central Americas United States Virginia 10005 Hydroxyapophyllite-(K), Prehnite, Stilbite, Laumontite, Fairfax quarry, Centreville, Fairfax Co., Virginia, USA March 23, 2018
