Sentence Examples


  • Galena and other lead ores are abundant in veins in the limestone, but they are now only worked on a large scale at Mill Close, near Winster; calamine, zinc blende, barytes, calcite and fluor-spar are common.
  • Galena and other lead ores are abundant in veins in the limestone, but they are now only worked on a large scale at Mill Close, near Winster; calamine, zinc, blende, barytes, calcite and fluor-spar are common.
  • Scheele had done, and because he was employing a glass vessel he got "fluor acid air" (silicon fluoride).
  • Fluor-spar when heated shines with considerable brilliancy. Various
  • Fluor-spar), or the absorption and giving out again of sun-rays. In

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