| | Journal (article/letter/editorial) | Origin of the El Dragón Selenium Mineralization, Quijarro Province, Potosí, Bolivia Günter Grundmann...April 2017 Abstract: A re-examination of the El Dragón vein-type Se deposit using polarized light microscopy...by volcanic-hydrothermal activities around the Porco caldera, formation of the mineralization involved...endmember penroseite; vaesite; genetic sequence; El Dragón; Bolivia 1. Introduction Research on selenium minerals...for the two selenium occurrences in the Andes of Bolivia: Virgen de Surumi (also known as “Pacajake”) [12 | | | Journal (issue) | Johnston & E. R. Swoboda Sulfur from the Perticara mine area, Pesaro-Urbino, Italy . . . . . . . . . . ...Pezzotta Famous mineral localities: The Lord Brassy mine, Tasmania . . . . . . . . . . . . . . . . . . .... John Sinkankas (1915–2002) at the Pala Properties Mine Bash, 1977. Van Pelt photo. NOTICE Died, John Sinkankas...County $12 Museum, Himalaya mine $12 (Brazil), Bosch Collection v.10/#2 Jeffrey mine (Quebec), Alpine Rodingites...Lotharmeyerite (Mapimi) $12 v.15/#5 Jacupiranga mine (Brazil), v.15/#6 Bad Ems (Germany), Jensen quarry |
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