Mineral-Expert: 27 Feb - 06 Mar 2017

Loučná pod Klinovcem, Chomutov District, Ústí nad Labem Region, Czech Republic

Weißeck Area, Murwinkel, Lungau, Salzburg, Austria

Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada

Trandorf, Mühldorf, Waldviertel, Lower Austria, Austria

Yaogangxian Mine, Hunan Province, China (Peoples Republic)

Rotläufchen Mine, Waldgirmes, Lahnau, Lahn-Dill, Giessen Region, Hesse, Germany

Overntjern Quarry, Modum, Viken, Norway

Le Cetine di Cotorniano Mine, Chiusdino, Siena Province, Tuscany, Italy