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  • Article - 12 May 2014
    Tremolite is a member of the amphibole group of silicate minerals. It is formed by metamorphism of quartz and dolomite-rich sediments. It was first discovered in 1789 in Campolungo, Piumogna Valley,...
  • Article - 3 Jun 2014
    Andesine, a member of the plagioclase feldspar solid solution group, was first discovered in 1841 for an occurrence in Marmato, the Marmato mine, Colombia, Chocó Department and Cauca.

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