Printer Friendly
Dictionary, Encyclopedia and Thesaurus - The Free Dictionary
3,922,959,112 visitors served.
forum Join the Word of the Day Mailing List For webmasters
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

Pallasite

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
pallasite [′palĀ·ə‚sīt]
(geology)
A stony-iron meteorite composed essentially of large single glassy crystals of olivine embedded in a network of nickel-iron.
An ultramafic rock, of either meteoric or terrestrial origin, which contains more than 60% iron in the former, or more iron oxides than silica in the latter.

Pallasite 

a rare stony-iron meteorite, named after the first extant meteorite of this type, Pallas iron, discovered in Siberia by the schoolteacher Medvedev and brought to St. Petersburg on the instructions of P. S. Pallas in 1772. Pallasites are composed of approximately equal quantities of nickel iron and olivine. The unique pallasite structure indicates that these meteorites were formed during the absence of gravitational force, or at least of significant gravitational force.



Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.
?Page tools
Printer friendly
Cite / link
Feedback
Mentioned in?  References in periodicals archive?   Encyclopedia browser?   Full browser?
No references found
 
It has the world's largest handdug well and the world's largest pallasite meteorite (the 1,000-pound meteorite was reported missing after the tornado, but it turned up a few days later, buried under the rubble of the town museum, where it had been on display).
The 45-year-old, of Milton of Balgonie, Fife, stumbled across the pallasite meteorite, containing iron and nickel, while in Yorkshire with wife Irene.
The most unusual peridot comes from meteorites (space rocks that hit Earth) called pallasites.
 
 
 
Encyclopedia
?

Terms of Use | Privacy policy | Feedback | Advertise with Us | Copyright © 2012 Farlex, Inc.
Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.