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MINERAL OF THE MONTH

February 2008: Amazonite

Amazonite, sometimes called Amazonstone, is a layered form of microcline feldspar; it was originally named after the Amazon River when similar green stones were found there. However, no deposits of Amazonite have ever been found near the Amazon River. Amazonite is a rare mineral. Originally, it was obtained from the Limen Mountains in Russia. More recently, it has been mined in the Pike’s Peak area of Colorado as well as in Madagascar, Canada, Italy, and Brazil.

Amazonite

Although Amazonite does exhibit a beautiful green color when polished, it is difficult to fashion into jewelry because it easily fractures. Most people believed that the blue-green color was due to copper compounds. Scientists discovered in the mid-1980s, though, that the color is caused by small quantities of lead and water.

Amazonite is a relatively soft stone, ranging from 5-6 on the Mohs scale. It has a specific gravity of around 2.56. It has a vitreous luster and can be translucent, or opaque if it contains a greater amount of impurities. It has a conchoidal fracture, but an also split between the layers. Because of the crystal structure within the mineral, it produces the schiller effect similar, but not quite as dramatic, as Labradorite.

It is thought that amazonite is a soothing stone that can improve self-confidence. It can also inspire confidence and positive attitude, and therefore can also diminish fear and anxiety.


Mineral of the Month Archives

May 2007 Rainbow Fluorite

June 2007 Lake Superior Michipicoten Agate

July 2007 Labadorite

August 2007 Rain Flower Agate

Fall 2007 Malachite

December 2007 Nepheline Syenite

January 2008 Native Copper

February 2008 Amazonite

March 2008 Lake Superior Agate

April 2008 Shadow Agate

May 2008 Apohpylite

June 2008 Ocean Jasper

Summer 2008 Marra Mamba Tiger's Eye

September 2008 Mohawkite

October 2008 Mexican opal

November 2008 Prehnite

December 2008 Picture Jasper

January 2009 Sea Shell Jasper

February 2009 Polychrome Jasper

March 2009 Selenite Desert Rose

Spring 2009 Coyamito Agate

July 2009 Obsidian Needles

August 2009 Goethite

September 2009 Banded Iron Formation

Fall 2009 Fairburn Agate

February 2010 Kentucky Agate

March 2010 Fossilized Dinosaur Bone

April/May 2010 Kentucky Agate


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Gitche Gumee Museum.
E21739 Brazel Street
Grand Marais, Michigan 49839

 


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