1796 BERTRANDITE, Golconda Pegmatite, Golconda District, Governador Valadares, Doce Valley, Minas Gerais, Brazil September 28, 2019 Steve Brazil South America Source D.Shannon, 1994
California North & Central Americas United States 2978 BURKEITE, Searles Lake, Trona, San Bernardino County, California, U.S.A. September 28, 2019
