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quartzite Definition

quartz·ite (kwôrtsīt′)

noun

  1. a very hard, metamorphic sandstone so firmly cemented that breakage occurs through grains rather than between them
  2. any sandstone tightly cemented with quartz

Etymology: quartz + -ite

quartzite Usage Examples

Converse of object

  • include: In past geological eras, various rocks including quartzite, grits and the Durness limestones were laid over much of the area.
  • overlie: This includes a thin tract of Torridonian together with the overlying Cambrian quartzites.
  • comprise: These comprise quartzites, sandstones and shales that are exposed at the southern end of the Malvern Hills.

Adjective modifier

  • Cambrian: To the west Cambrian quartzites lie directly above the Ben More Thrust.
  • shattered: At 023 049, a large fault is observed, trending approximately N-S, which juxtaposes shattered quartzite against shattered quartzite.
  • Precambrian: The oil was produced from fractured PreCambrian quartzite on the summits of the buried hills.
  • white: Upon a plinth of Torridonian sandstones lies the continuous cliff-line of bright white Cambrian quartzites.
  • hard: A possible basal unconformity has been observed with a fine grained conglomerate lying on the hard Devonian quartzite.
  • undeformed: Relatively undeformed quartzite far from the main fault with a single through-going microcrack.

Modifies a noun

  • pebble: A layer of white quartzite pebbles covered some graves.
  • rock: The snowy white scree is made from quartzite rock.
  • block: But a line of quartzite blocks lies hundreds of meters ahead of the hillside too.
  • scree: Beinn Eighe 57 1152 x 864 379K Beinn Eighe's white quartzite scree spills down into Coire Dubh.
  • sandstone: It and all the other articles in this chamber are of the same quartzite sandstone as the chamber.
  • boulder: Large quartzite boulder beaches lie stranded up to 50M above the current sea level.