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      Collection of weekly news and commentaries from John Betts, lecturer, author, photographer, mineral collector, and mineral dealer. Practical everyday advice for mineral collectors on building and organizing mineral collections.

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    • Lead

      2018 11 8ensp;0183;ensp;Lead is a chemical element with symbol Pb (from the Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and has a relatively low melting point. When freshly cut, lead is silvery with a hint of blue; it tarnishes to a dull gray color when exposed to air. Lead has the

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