My watch list
my.chemeurope.com  
Login  

Mariposite



  Mariposite is a mineral which is a chromium-rich variety of mica, which imparts an attractive green color to the generally white dolomitic marble in which it is commonly found. It was named for Mariposa, California, though it can be found in several places in the Sierra Nevada mountains, and in a few locations in Canada and Europe.

Additional recommended knowledge

It is not an officially classified mineral, but is a chromium-rich phengite, which is a high silica variety of muscovite, a mica. The chemical formula is K(Al,Cr)2(Al,Si)4O10(OH)2. It is the chromium that gives it its distinctive green color.

The term "mariposite" also refers to the stone in which the green mica is found. This stone is marble, containing varying amounts of dolomite and quartz. Larger proportions of quartz give it a more attractive, translucent appearance. It is used as a decorative construction material, in walls, monuments, and bridges. It is also made into jewelry. This jewelry is sometimes sold under the trade name "Emerald Quartz".

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mariposite". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE