Meteorite could hold solar clues ttp://news.bbc.co.uk/1/hi/sci/tech/7465044.stm
From: KutchScience
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Dear EDITORIALS, Friends of the Science and ASTRONOMY.

A rare type of meteorite that could hold clues to the birth of our Solar System
has been bought by London's Natural History Museum. The Ivuna meteorite,
obtained from a US private collection, has the same chemical make-up from which
the Solar System formed 4.5 billion years ago. It landed in Tanzania in 1938 as
one 705g stone, since split into samples.
Pieces from the UK sample, the largest in any public collection in the world,
will be removed for study.
Most Ivuna samples are held in private collections, or by the Tanzanian
government.






It's a particularly important specimen to science because it's been so well
preserved

Dr Caroline Smith,Natural History Museum Ivuna's chemical make-up, which matches
the Sun, is extremely rare - just nine of the 35,000 known meteorites, or 0.03%,
have this solar composition.
Dr Caroline Smith, meteorite curator at the Natural History Museum (NHM), told
BBC News: "These types of meteorite are very susceptible to alteration on Earth.
Changes in humidity, for example, can change their composition.
"But this meteorite is important as it fell relatively recently and has been
kept under nitrogen in a sealed environment for the last two or three decades.
"It's a particularly important specimen to science because it's been so well
preserved. We're all incredibly excited about it because it's so pristine."
Monica Grady, professor of planetary sciences at the Open University in Milton
Keynes, commented: "This is fantastic for the UK's meteorite experts. This
material represents the crumbs from the foundation of the Solar System. It's an
unbelievable opportunity to study it in close-up.
"The museum has been very bold in acquiring it."
One question that Ivuna could help answer is how the chemical building blocks
for life came to Earth.
Important components of so-called pre-genetic material, the amino acids
b-alanine and glycine, were found in Ivuna in a 2001 study.
Last week, scientists at Imperial College London confirmed that a meteorite
called Murchison contained extra-terrestrial molecules that were the precursors
to DNA and RNA.
In addition to being used for research, Ivuna will be a star specimen in a new
meteorites gallery, which the NHM is planning for the near future.
"The plan is to take the meteorite to Nasa's Johnson Space Center in Houston,
where we'll have a 20g piece taken off and that will be sub-divided into two 10g
pieces," Dr Smith explained.
"One piece will be put to one side. The other will be divided into 200mg
allocations - less than the size of your fingernail - for researchers to study."
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