Sentence Examples

  • The islands are of ironstone formation overlying quartzite and crystalline schists.
  • Sawatch quartzite 50 350 ft.
  • The Nieuwerust beds contain quartzite, arkose and shales.
  • Examined more closely these are found to be vast accumulations of blocks of quartzite, irregular in form, but having a tendency to a rude diamond shape, from 2 to 20 ft.
  • In length, and half as much in width, and of a thickness corresponding with that of the quartzite ridges on the hills above.