Pyroxene

From CAMEO
Jump to: navigation, search
Pyroxene

Description

One of the major classes of silicate minerals. Pyroxenes, in general, a series of doubly hydrated silicates usually containing either calcium, magnesium, or iron. They are distinguished from amphiboles, a second major class, by their cleavage planes. Amphiboles have cleavage angles of 56 and 124 degrees while pyroxenes have cleavage angles of 5 and 93 degrees. Pyroxenes are commonly found in both igneous and metamorphic rocks. Examples of some augite, enstatite, diopside, pyroxenite, jadeite, spudomene, and rhodonite.

Synonyms and Related Terms

pyroxenite; Pyroxen (Deut.); piroxeno (Esp.);pyroxène (Fr.); pyroxenen (Ned.); pirokseny (Pol.); piroxena (Port.); pyroxeen (Ned.)

Sources Checked for Data in Record

  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • R.F.Symmes, T.T.Harding, Paul Taylor, Rocks, Fossils and Gems, DK Publishing, Inc., New York City, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

Retrieved from "http://cameo.mfa.org/index.php?title=Pyroxene&oldid=54703"