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 ____________ I'm not sure if this is where I should add a comment. I'm not an expert on wikipedia at all but I saw this article https://www.dailymail.co.uk/sciencetech/article-9578359/Extremely-rare-Winchcombe-meteorite-goes-display-Londons-Natural-History-Museum.html?offset=1&max=100&jumpTo=comment-694642689#comment-694642689 and thought that some of the content especially on famous meteorites should list this one — Preceding unsigned comment added by 82.23.16.93 (talk) 17:15, 14 May 2021 (UTC)[reply]

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:[reply]

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)[reply]

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)[reply]

If you're still here ... the short answer is that "no one really knows". You also have to be a little careful with that phrase "organic matter". There is at the moment no proof, not even a suggestion yet, that these somehow came from living things. That is NOT the conclusion. — Preceding unsigned comment added by 60.229.91.197 (talk) 07:32, 13 March 2018 (UTC)[reply]

External links modified[edit]

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A personal reflection.[edit]

Look, this has nothign to do with an "Encyclopedia", so putting it here rather than on the main page. These "rocks" have a fabulous .... searches for the right word ... "Organic" almost ... "crude oil" smell. So suggestive. So full of possibilities. Worthwhile going to a museum to experience it for yourselves, just for that. A very personal observation. — Preceding unsigned comment added by 60.229.91.197 (talk) 07:34, 13 March 2018 (UTC)[reply]

To add to article[edit]

To add to this article: information from this article, published on August 13, 2020.

173.88.246.138 (talk) 03:32, 19 August 2020 (UTC)[reply]

Wiki Education assignment: Organic Geochemistry 2023[edit]

This article was the subject of a Wiki Education Foundation-supported course assignment, between 3 April 2023 and 11 June 2023. Further details are available on the course page. Student editor(s): SpaceStones (article contribs).

— Assignment last updated by SpaceStones (talk) 19:19, 1 May 2023 (UTC)[reply]