Northwest Africa 7325: Difference between revisions
Appearance
Content deleted Content added
Jaredinbali (talk | contribs) →References: thumbnail photo |
m copy edits |
||
Line 21: | Line 21: | ||
|Image2_caption= |
|Image2_caption= |
||
}} |
}} |
||
'''Northwest Africa 7325''', also known as '''NWA 7325''' is the first [[meteorite]] believed to have originated from [[Mercury (planet)|Mercury]]. Found in a marketplace in [[Erfoud]], [[Morocco]] in 2012,<ref name="NASA">[http://www.lpi.usra.edu/meteor/metbull.php?code=55627 Northwest Africa 7325]. ''Meteoritical Bulletin Database''. [[Lunar and Planetary Institute]], Houston, Texas. Accessed 2013-03-30.</ref> |
'''Northwest Africa 7325''', also known as '''NWA 7325''' is the first [[meteorite]] believed to have originated from [[Mercury (planet)|Mercury]]. Found in a marketplace in [[Erfoud]], [[Morocco]] in 2012,<ref name="NASA">[http://www.lpi.usra.edu/meteor/metbull.php?code=55627 Northwest Africa 7325]. ''Meteoritical Bulletin Database''. [[Lunar and Planetary Institute]], Houston, Texas. Accessed 2013-03-30.</ref> the meteorite is composed of 35 fragments with a combined weight of approximately {{convert|345|g|oz}}.<ref name="NBC">Major, Jason. March 29, 2013. "[http://www.nbcnews.com/id/50712511/ns/technology_and_science-space/t/greenish-rock-may-be-first-meteorite-mercury/ Greenish rock may be meteorite from Mercury]". ''NBC News''. New York. Accessed 2013-03-30.</ref> Investigation of the meteorite by [[Anthony Irving]] at the [[University of Washington]] determined that the meteorite's composition is consistent with that of Mercury as determined by the [[MESSENGER]] spacecraft.<ref>{{Cite journal|last1=Irving|first1= A. J. |last2=Kuehner|first2= S. M. |last3=Bunch|first3= T. E. |last4=Ziegler|first4= K. |last5=Chen|first5= G. |last6=Herd|first6= C. D. K. |last7=Conrey|first7= R. M. |last8= Ralew|first8=S.|title = Ungrouped Mafic Achondrite Northwest Africa 7325: A Reduced, Iron-Poor Cumulate Olivine Gabbro from a Differentiated Planetary Parent Body| journal = Proc. 44th Lunar and Planetary Science Conference (2013)|date = March 2013|volume = 1719| pages = 2164|url = http://www.lpi.usra.edu/meetings/lpsc2013/pdf/2164.pdf |bibcode=2013LPICo1719.2164I }}</ref><ref name="NBC"/> Irving cautioned, however, that NWA 7325 could also have come from a smaller but Mercury-like body.<ref name="Yahoo">Kramer, Miriam. March 29, 2013. "[http://news.yahoo.com/green-meteorite-may-mercury-first-145455980.html Green Meteorite May Be from Mercury, a First]". ''Yahoo! News''. Accessed 2013-03-30.</ref> NWA 7325 is estimated to be 4.56 billion years old and was likely ejected from Mercury on an Earth-intersecting trajectory by an impact.<ref name="Yahoo"/> |
||
==References== |
==References== |
Revision as of 15:41, 24 June 2013
Northwest Africa 7325 | |
---|---|
Type | Achondrite |
Country | Morocco |
Region | Northwest Africa |
Observed fall | No |
Found date | 2012 |
TKW | 345 grams (12.2 oz) |
Northwest Africa 7325, also known as NWA 7325 is the first meteorite believed to have originated from Mercury. Found in a marketplace in Erfoud, Morocco in 2012,[1] the meteorite is composed of 35 fragments with a combined weight of approximately 345 grams (12.2 oz).[2] Investigation of the meteorite by Anthony Irving at the University of Washington determined that the meteorite's composition is consistent with that of Mercury as determined by the MESSENGER spacecraft.[3][2] Irving cautioned, however, that NWA 7325 could also have come from a smaller but Mercury-like body.[4] NWA 7325 is estimated to be 4.56 billion years old and was likely ejected from Mercury on an Earth-intersecting trajectory by an impact.[4]
References
- ^ Northwest Africa 7325. Meteoritical Bulletin Database. Lunar and Planetary Institute, Houston, Texas. Accessed 2013-03-30.
- ^ a b Major, Jason. March 29, 2013. "Greenish rock may be meteorite from Mercury". NBC News. New York. Accessed 2013-03-30.
- ^ Irving, A. J.; Kuehner, S. M.; Bunch, T. E.; Ziegler, K.; Chen, G.; Herd, C. D. K.; Conrey, R. M.; Ralew, S. (March 2013). "Ungrouped Mafic Achondrite Northwest Africa 7325: A Reduced, Iron-Poor Cumulate Olivine Gabbro from a Differentiated Planetary Parent Body" (PDF). Proc. 44th Lunar and Planetary Science Conference (2013). 1719: 2164. Bibcode:2013LPICo1719.2164I.
- ^ a b Kramer, Miriam. March 29, 2013. "Green Meteorite May Be from Mercury, a First". Yahoo! News. Accessed 2013-03-30.
External links
- Beatty, Kelly (1 February 2013). "The First-Ever Meteorite from Mercury?". skyandtelescope.com. Retrieved 30 March 2013.