Sentence Examples

  • The rocks are probably of quartz, i.e.
  • Brewster, apply the name of amethyst to all quartz which exhibits this structure, regardless of its colour.
  • Galena occurs in veins in the Cambrian clay-slate, accompanied by copper and iron pyrites, zinc-blende, quartz, calcspar, iron-spar, &c.; also in beds or nests within sandstones and rudimentary limestones, and in a great many other geological formations.
  • In East Siberia gold is obtained almost exclusively from gravel-washings, quartz mining being confined to three localities, one near Vladivostok and two in Transbaikalia.
  • The prevailing formations appear to be granites which are veined with white quartz, and underlie old sedimentary brown sandstone and limestone formations.

How would you define quartz? Add your definition here.

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