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The Shergotty meteorite is the first example of the shergottite Mars meteorite family.

The Shergotty meteorite, a 5 kg martian meteorite, fell to Earth at Shergotty, Gaya, Bihar, India on August 25, 1865 and was retrieved by witnesses almost immediately.[1] This meteorite is relatively young; radiometric dating indicates that it solidified from a volcanic magma about 4.1 billion years ago.[2] It is composed mostly of pyroxene and is thought to have undergone preterrestrial aqueous alteration for several centuries. Certain features in its interior suggest to be remanents of biofilm and their associated microbial communities.[3] Work is in progress on searching for magnetites within alteration phases.

References

  1. ^ Shergotty Meteorite - JPL, NASA
  2. ^ Bouvier, A.; et al. (2009). "Martian meteorite chronology and the evolution of the interior of Mars.". Earth and Planetary Science Letters 280: 285-295. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V61-4VPKR15-2&_user=56861&_coverDate=04/15/2009&_alid=972474355&_rdoc=2&_fmt=high&_orig=search&_cdi=5801&_sort=r&_docanchor=&view=c&_ct=5&_acct=C000059542&_version=1&_urlVersion=0&_userid=56861&md5=03c14d4bde6ba2d6e9b1ece135335a33.  
  3. ^ Evidence for ancient Martian life. E. K. Gibson Jr., F. Westall, D. S. McKay, K. Thomas-Keprta, S. Wentworth, and C. S. Romanek, Mail Code SN2, NASA Johnson Space Center, Houston TX, USA.

See also

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