0556 QUARTZ var. Amethyst, Valenciana Mine, Guanajuato, Durango, Mexico September 28, 2019 Steve Mexico North & Central Americas Source M.Newnham, 1998
Kansas North & Central Americas United States 3311 SPHALERITE, Baxter Springs, Cherokee County, Kansas, U.S.A. September 28, 2019
Europe Greenland 3682 THOMSENOLITE, Ivigtut Cryolite Deposit, Ivittuut, Arsuk Fjord, Sermersooq, Greenland September 28, 2019