Talk:Northwest Africa 7034

A fact from Northwest Africa 7034 appeared on Wikipedia's Main Page in the Did you know column on 11 January 2013 (check views). The text of the entry was as follows:

Did you know... that Northwest Africa 7034 (pictured) is a type of Martian meteorite never before seen, and has more water in it than any other yet discovered?

A record of the entry may be seen at Wikipedia:Recent additions/2013/January. The nomination discussion and review may be seen at Template:Did you know nominations/Northwest Africa 7034.

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DYK nomination

Possible source

Amos, Jonathan (January 3, 2013). "Mars meteorite 'Black Beauty' is in a class of its own". BBC. Retrieved January 6, 2013.

Chris857 (talk) 04:24, 6 January 2013 (UTC)[reply]

Martian origin

If this meteorite doesn't conform to any of the known martian types, how can one say it's from Mars? This should be explained. --Piledhigheranddeeper (talk) 19:15, 11 January 2013 (UTC)[reply]

The information you are looking for is in the classification section. The iron/manganese ratio conforms with that of the other martian meteorites. The oxygen isotope data does not overlap with that of the SNC-meteorites. The NWA7034 data seems to lie along a line drawn through the SNC-meteorite data. You can look at the data on the second page of this pdf: http://www.lpi.usra.edu/meetings/lpsc2012/pdf/2690.pdf. If you think that the section is somewhat unclear I can try to add a little more explanation to it. Cheers --Tobias1984 (talk) 19:30, 11 January 2013 (UTC)[reply]

The last paragraph in the Science article covers this quite nicely. The thing to bear in mind is that, unlike SNC meteorites, this is the first martian meteorite that actually looks like typical martian crust

"Its major, minor, trace, and isotopic chemistry is inconsistent with originating from Earth, Moon, Venus, or Mercury, and it is most similar to rocks from Mars...the bulk chemistry of NWA 7034 is strikingly similar to recently collected orbital and lander data collected at the martian surface, allowing for a direct link between a martian meteorite and orbital and lander spacecraft data from Mars."

Sean.hoyland - talk 10:02, 12 January 2013 (UTC)[reply]

Water content?

"The whole rock chemistry revealed that NWA 7034 has the highest water content ever measured in a Martian meteorite." - I have seen this kind of language several times in reports on NWA 7034. But I never saw a report that actually list H2O as content. So for an encyclopedic information the language should be clearer, and as far as I understand it there is actually no water in this meteorite, but the chemical compositions points to contact with water. Do we have someone around who can say it better?Kipala (talk) 09:01, 28 December 2020 (UTC)[reply]

7034 or 7533?

The article seems to use the numbers interchangeably, with no explanation 50.24.34.222 (talk) 16:59, 10 December 2021 (UTC)[reply]