0871 ULEXITE, U.S. Borax Open Pit, Boron, Kramer District, Kern County, California, U.S.A.

September 28, 2019 Pendleton California North & Central Americas United States

Source G.Leske, 1979

5503 GERSTLEYITE, Baker Mine, Boron, Kramer District, Kern County, California, U.S.A.

California North & Central Americas United States

5503 GERSTLEYITE, Baker Mine, Boron, Kramer District, Kern County, California, U.S.A.

September 28, 2019

5578 TANTALITE-(Mn), Ze Pinto Prospect, Conselheiro Pena, Doce Valley, Minas Gerais, Brazil

Brazil South America

5578 TANTALITE-(Mn), Ze Pinto Prospect, Conselheiro Pena, Doce Valley, Minas Gerais, Brazil

September 28, 2019

4835 NEWBERYITE, Mt. Widderin Cave, Skipton, Victoria, Australia

Australasia Australia Victoria

4835 NEWBERYITE, Mt. Widderin Cave, Skipton, Victoria, Australia

September 28, 2019

5941 MULLITE, Wannenkopfe, Ochtendung, Eifel Mountains, Rhineland-Palatinate, Germany

5941 MULLITE, Wannenkopfe, Ochtendung, Eifel Mountains, Rhineland-Palatinate, Germany

September 28, 2019