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Photo: 13 green quartzite






Description: When sandstone becomes buried and is subjected to pressure, the quartz crystals and cementing material are aligned at right angles to the pressure forming alternating layers. Recystallization as mica gives the rock its shiny reflective sheen



cbh45
cbh45
  • Title: 13 green quartzite
  • Photo added by cbh45, Nov 6 2008, 6:45 AM EST , and last updated by cbh45, Nov 6 2008, 7:34 AM EST
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