Find

Collect

Name

Play

Link

Home

Neighborhood Rocks                                     Search this Site

Brown Quartzite Pebbles ("KWARTZ-ite") 


Brown quartzite pebbles
These pebbles are made of grains of quartz welded together to form a really hard rock.  They were rounded smooth as they were battered and ground against each other in moving water, in a river or on a beach.

To learn more about these quartzite pebbles, scroll farther down this page.
  

  
  
bulletHow to recognize brown quartzite
bulletOther rocks that look like brown quartzite
bulletWhere brown quartzite came from
bulletHow brown quartzite formed
bulletOther names for brown quartzite
bulletLinks to Web sites about brown quartzite
  

How to recognize brown quartzite

bulletThis rock is mostly brown or tan in color, although some pieces may also be reddish, yellowish, or gray.
bulletIts grains are usually sand-sized bits of quartz -- but you usually can't see the grains, because they are welded together.  
bulletThe sand grains are so tightly welded with that the rock breaks through the grains more.  (Sandstone breaks around the grains.)
bulletYou cannot scratch quartzite with a nail or knife.  (See more about the scratch test.)
bulletQuartzite made almost entirely of the mineral quartz.
    

Other rocks that look like brown quartzite

Brown quartzite is the only rock in our neighborhood
that is this smooth and hard.
  

Where brown quartzite came from

Brown quartzite is sold under the trade name, "Alabama 
Sunset," so we're pretty sure it comes from the state of
Alabama in the southern United States.
  

How brown quartzite formed

Brown quartzite was originally a sandstone, made of grains 
of quartz sand cemented into rock.  This rock was later 
altered by heat and pressure, which sealed the grains even 
more tightly together, changing it into much tougher quartzite 
rock.
  

Other names for brown quartzite

We use the scientific name "quartzite" for this rock,
but it is also known by other names:

bulletWe've seen 50-pound bags of brown quartzite pebbles gravel sold as "Alabama Sunset."

 

Here are some ways to classify quartzite (by grouping it with similar types of rocks):
  
bulletQuartzite is a metamorphic rock, because it was changed by heat and pressure from one rock type into another.
  
bulletQuartzite is sometimes classified as a meta-sedimentary rock, because it was originally a sedimentary rock.

    

Links to Web sites about quartzite

The Volcano World Web site has a short page about quartzite.
   < http://volcano.und.nodak.edu/vwdocs/vwlessons/lessons/Slideshow/Merocks/Merock6.html >

The Stone Age Reference Collection Web site discusses 
quartzite as a raw material for making stone tools.
   < http://www.hf.uio.no/iakk/roger/lithic/quartzite.html >

The Quartzite Rock Association advocates for the use of 
quartzite in road and building construction.  (Their home
page shows a picture of a quartzite quarry.)
   < http://www.quartzite.com/index.htm >


    


Find

Collect

Name

Play

Link

Home

Copyright 2001-2002 Eric D. Gyllenhaal                                         Search this Site
Webmaster@SaltTheSandbox.org

Neighborhood Rocks is part of the Salt the Sandbox Web. 
For more information visit the Salt the Sandbox home page.

This page was created on May 2, 2001, and it was last updated on July 27, 2002.