Question

Which of the following rock types, the Quartzite is related to ?
1. Igneous Rocks
2. Sedimentary Rocks
3. Metamorphic Rocks
4. None of the above

Answer 1

Correct Answer - Option 3 : Metamorphic Rocks

The correct answer is Metamorphic rock.

• The Quarzite is a metamorphic rock formed from pure quartz sandstone.
• It is white to grey in colour.
• Orthoquartzite is a very pure quartz sandstone composed of usually well-rounded quartz grains cemented by Silica.
• Orthoquartzite is often 99% SiO2 with only very minor amounts of iron oxide and trace resistant minerals such as zircon, rutile and magnetite.
• Quartzite is very resistant to chemical weathering and often forms ridges and resistant hilltop​

• Uses of Quarzite-
  • It is a decorative stone used in stairsteps, titles etc.
  • Crushed quartzite is used in road construction.
  • In ancient times it is used in making stones.
  • Its prolonged inhaling may cause chronic diseases like Silicosis and Pulmonary fibrosis.