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  2. Quartzite - Wikipedia

    en.wikipedia.org/wiki/Quartzite

    Quartzite is a very hard rock composed predominantly of an interlocking mosaic of quartz crystals. The grainy, sandpaper-like surface is glassy in appearance. Minor amounts of former cementing materials, iron oxide, silica, carbonate and clay, often migrate during recrystallization, causing streaks and lenses to form within the quartzite. [ 1 ]

  3. Quartz - Wikipedia

    en.wikipedia.org/wiki/Quartz

    Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent and has often been used for hardstone carvings, such as the Lothair Crystal. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. [ 37 ]

  4. Metamorphic rock - Wikipedia

    en.wikipedia.org/wiki/Metamorphic_rock

    Quartzite is sufficiently hard and dense that it is difficult to quarry. However, some quartzite is used as dimension stone, often as slabs for flooring, walls, or stairsteps. About 6% of crushed stone, used mostly for road aggregate, is quartzite. [4] Marble is also prized for building construction [48] and as a medium for sculpture. [6]

  5. What's the Difference Between Quartz and Quartzite? - AOL

    www.aol.com/whats-difference-between-quartz...

    Quartzite, on the other hand, is a 100 percent natural material. It comes straight from the earth. Quartzite begins as metamorphic sandstone that gets buried underground, according to Use Natural ...

  6. Is Limestone or Quartzite Better for a Fireplace Surround ...

    www.aol.com/limestone-quartzite-better-fireplace...

    Quartzite is an attractive, durable, and heat-resistant material that looks great in most homes, but it comes with a higher price tag than limestone. However, the difference in price may not be as ...

  7. Sioux Quartzite - Wikipedia

    en.wikipedia.org/wiki/Sioux_quartzite

    Sioux Quartzite at Falls Park, Sioux Falls, South Dakota Cross-bedding in the Sioux Quartzite, Blue Mounds State Park, Minnesota, United States.. The Sioux Quartzite is a Proterozoic quartzite that is found in the region around the intersection of Minnesota, South Dakota, and Iowa, and correlates with other rock units throughout the upper midwestern and southwestern United States.

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