Works of "Research Collection"
Place Collected: Cebollar
Place Collected: Cacheuta Mine
Place Collected: near Copiapo
Place Collected: Gongo-soco Mine
Place Collected: Baia Sprie
Place Collected: "Kara Chagyr"
Place Collected: Val di Vizze
Place Collected: Sienzinger Spitze Hollersbachtal