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Industry Resources - Fun Facts

Granite Fun Facts!

  • The word "granite" comes from the Latin "granum", a coarse grain.
  • Granite forms a major part of the earth’s continental crust.
  • Granite is an igneous rock formed by the magma of volcanoes.
  • America’s first railroad, The Granite Railway, was formed in the 1820’ to haul granite from Quincy, Massachusetts.
  • Granite is prized by rock-climbers because of its steepness, soundness, crack systems and friction.

Limestone Fun Facts!

  • Limestone is a sedimentary rock composed largely of the mineral calcite.
  • Limestone can recrystallize into marble.
  • The world’ largest limestone quarry is in Rogers City, Michigan.
  • The city of Kingston in Ontario, Canada is called the "Limestone City" because so many buildings were built with limestone.
  • Limestone is partially soluble, so it can erode to create many different landscapes.
  • Limestone quarries in northwestern Europe can extend for over a hundred kilometers.

Sandstone Fun Facts!

  • Sandstone is a sedimentary rock that can take on almost any color.
  • Because of its hardness, sandstone is often used to make grindstone wheels.
  • Sandstone formations begin with sand from the sea or desert, and solidify by pressure over time.
  • There are 3 broad groups of sandstone: arkosic, quartzose and argillaceous.
  • The fine grain of sandstone allows running water to filter out pollutants from the rock. Sandstone formations, like the Navajo Sandstone in the Southwestern US, can grow to 2000 feet.

Source:  (c) 2014; Used with permission of Backyard Adventures.