Talk:Carbonaceous chondrite

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Comments[edit]

CI group This group, named after the Ivuna meteorite, are considered the least altered of all carbonaceous chondrites. They typically contain a high proportion of water (up to 20%), and organic matter in the form of amino acids and PAHs.

http://en.wikipedia.org/wiki/PAH This article is about the gene named PAH. For the chemical compound, see polycyclic aromatic hydrocarbon.

This is a poor redirect. It seems to imply that PAHs the gene exists in carbonaceous chondrites rather than the polycyclic aromatic hydrocarbon. If the gene does exist - wow - please clarify. Thanks

Densities?[edit]

What are the range of densities exhibited by these meteorites? The link to Olivene tells me about 3.5, but the other components would change that (reduce it I assume). Thanks. -84user (talk) 15:18, 19 June 2008 (UTC) I found this table of densities for ordinary chondrites and it shows:

Meteorite type   Grain density   Bulk density  Average porosity
H                3.84            3.4           11.5%
L                3.75            3.34          10.8%
LL               3.56            3.19          10.4%

So, would it be safe to say the bulk desnity of Carbonaceous chondrites should fall in the range 3 to 4? -84user (talk) 15:28, 19 June 2008 (UTC)


Organic matter[edit]

Can someone give more of an explanation how Organic matter such as kerogen is found on extraterrestrial materials? What is this synthetic pathway? thank you --OxAO (talk) 17:48, 3 June 2009 (UTC)