arfvedsonite

arfvedsonite

[ahr-vid-suh-nahyt]
noun Mineralogy.
a sodium-rich amphibole, occurring in green to black crystals in alkalic rocks.

Origin:
1830–40; named after J. A. Arfvedson (died 1841), Swedish chemist; see -ite1

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To arfvedsonite
Encyclopedia Britannica
Encyclopedia

arfvedsonite

amphibole mineral, an iron-rich sodium silicate. Lithium and magnesium replace iron in the structure to form eckermannite. Both minerals characteristically occur as dark-green crystals in alkali igneous rocks and their associated pegmatites. For chemical formula and detailed physical properties, see amphibole (table)

Learn more about arfvedsonite with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature