Sentence Examples


  • Cambrian, Ordovician and Silurian beds have been recognized, the Upper Cambrian consisting of a limestone which is very rich in metalliferous ores (especially galena and calamine).
  • The government let the mines to contractors for forty years and then took them over; but in the period from 1720 to 1840 only 14,620 tons of galena were extracted and 2772 of lead.
  • The most important minerals are lead and zinc, obtained in lodes in the forms of galena and calamine respectively.
  • Nickel, cobalt and antimony minerals have been identified as inclusions in the abundant primary sulfides galena and chalcopyrite.
  • Minerals that were of economic importance included galena (lead) and zinc and the associated spar minerals fluorspar and barytes.

How would you define galena? Add your definition here.

comments powered by Disqus