Sentence Examples


  • The rocks are probably of quartz, i.e.
  • Gold is obtained chiefly from quartz reefs, but there are still some important alluvial deposits being worked.
  • The greatest development of quartz reefing is found in Victoria, some of the mines being of great depth.
  • The conglomerates consist almost entirely of pebbles of quartz set in a hard 2 At the Standerton gauge on the Vaal in 1905-1906, a year of extreme drought, the total flow was 8,017,000,000 cub.
  • Jacquerod and Perrot have found that quartz-glass is freely permeable to helium below a red-heat (Comet.