Themes > Science > Earth Sciences > Geology > Rocks and Minerals > Minerals & Rocks Additional Information > The most common metamorphic rocks > Marble

Marble
(pronounced: mar-ble)

Marble is a non-foliated, coarse, crystalline rock who parent is usually limestone.

When marble is examined by hand it closely resembles crystalline limestone. Pure marble is white composed primarily of mineral calcite. Often, limestone is not pure. These impurities color the marble pink, grey, green or black.

Under extreme deformation, the bands formed by the minerals may become very contorted and give marble that well known, swirl look.


Information provided by Patrick M. Colgan, Northeastern University
http://www.casdn.neu.edu