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Neodymium was nominated as a good article, but it did not meet the good article criteria at the time (May 18, 2024, reviewed version). There are suggestions on the review page for improving the article. If you can improve it, please do; it may then be renominated.

Neodymium was nominated as a good article, but it did not meet the good article criteria at the time (June 7, 2022). There are suggestions on the review page for improving the article. If you can improve it, please do; it may then be renominated.

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Table "Solar System abundances" appears to be WP:OR

The table of Solar System abundances shows the relative abundance of Neodymium. This table does not appear in the source. No comparison to Neodymium is even made in the article. Thus the selection of rows, the values in the columns, and the implied significance of the comparison are all inventions.

Sources don't report the relative abundance of rare elements because they vary widely with source. Giving the ratio to three significant figures is completely unscientific. Johnjbarton (talk) 16:13, 14 April 2024 (UTC)[reply]

I'm not well acquainted with the methods of measuring elemental abundances in the solar system - is this a better source, as it states "Only elements with an accuracy of the solar abundance determination of better than 25% were included"? Recon rabbit 16:25, 14 April 2024 (UTC)[reply]

Thanks! The study of the abundance of elements is critical to cosmology so there are many studies of various kinds going back nearly a hundred years. The key question here is whether the particulars of the table are significant or just an invention by an enterprising editor. Johnjbarton (talk) 20:33, 15 April 2024 (UTC)[reply]

Puzzling change labeled "+ per GAN"?

In this recent change, @Praseodymium-141 changed a sentence related to glass impurities to one related to lanthanide separation. The new sentence seems out of context. I don't understand the change nor the cryptic edit summary. Why this change? Is it still supported by the ref? Johnjbarton (talk) 14:03, 16 April 2024 (UTC)[reply]

The change was requested because the ref never supported the statements about glass impurities; it never mentions glass in the first place. I recommended the change in order to better reflect the information in the source; it probably needs additional work to put it in context with the rest of the paragraph. Information on historical neodymium glass production was not forthcoming. Recon rabbit 14:40, 16 April 2024 (UTC)[reply]

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+== Table "Solar System abundances" appears to be [[WP:OR]] ==
-Article changed over to new [[Wikipedia:WikiProject Elements]] format by [[user:schneelocke|schnee]]. Elementbox converted 11:05, 10 July 2005 by [[User:Femto|Femto]] (previous revision was that of [http://en.wikipedia.org/enwiki/w/index.php?title=Neodymium&oldid=18464046 13:32, 9 July 2005]).
+The table of Solar System abundances shows the relative abundance of Neodymium. This table does not appear in the source. No comparison to Neodymium is even made in the article. Thus the selection of rows, the values in the columns, and the implied significance of the comparison are all inventions.
-=== Information Sources ===
+Sources don't report the relative abundance of rare elements because they vary widely with source. Giving the ratio to three significant figures is completely unscientific. [[User:Johnjbarton|Johnjbarton]] ([[User talk:Johnjbarton|talk]]) 16:13, 14 April 2024 (UTC)
-Data for the table was obtained from the sources listed on the subject page and [[Wikipedia:WikiProject Elements]] but was reformatted and converted into [[SI]] units.
+:I'm not well acquainted with the methods of measuring elemental abundances in the solar system - is [https://par.nsf.gov/servlets/purl/10036398 this] a better source, as it states "Only elements with an accuracy of the solar abundance determination of better than 25% were included"? [[User:Reconrabbit|<span style="color:#6BAD2D">Recon</span>]][[User talk:Reconrabbit|<span style="color:#2F3833">rabbit</span>]] 16:25, 14 April 2024 (UTC)
-------
+::Thanks! The study of the abundance of elements is critical to cosmology so there are many studies of various kinds going back nearly a hundred years. The key question here is whether the particulars of the table are significant or just an invention by an enterprising editor. [[User:Johnjbarton|Johnjbarton]] ([[User talk:Johnjbarton|talk]]) 20:33, 15 April 2024 (UTC)
+== Puzzling change labeled "+ per GAN"? ==
-=== Talk ===
+In [https://en.wikipedia.org/enwiki/w/index.php?title=Neodymium&diff=prev&oldid=1219182991 this] recent change, @[[User:Praseodymium-141|Praseodymium-141]] changed a sentence related to glass impurities to one related to lanthanide separation. The new sentence seems out of context. I don't understand the change nor the cryptic edit summary.  Why this change? Is it still supported by the ref? [[User:Johnjbarton|Johnjbarton]] ([[User talk:Johnjbarton|talk]]) 14:03, 16 April 2024 (UTC)
-== Neodymium ==
+:The change was requested because the ref never supported the statements about glass impurities; it never mentions glass in the first place. I recommended the change in order to better reflect the information in the source; it probably needs additional work to put it in context with the rest of the paragraph. Information on historical neodymium glass production was not forthcoming. [[User:Reconrabbit|<span style="color:#6BAD2D">Recon</span>]][[User talk:Reconrabbit|<span style="color:#2F3833">rabbit</span>]] 14:40, 16 April 2024 (UTC)
-I'll bring back the misspelling information that was recently removed. The misspelling "neodynium" is not notable in Wikipedia because I've corrected all of its occurrences (except one that is in a reference title on [[IntraLASIK]]) since I started editing here. Google "neodynium" and you'll find many serious scientific papers using it. The misspelling "praseodynium" can be seen much less frequent but is still worth mentioning too, I think. [[User:Warut|Warut]] ([[User talk:Warut|talk]]) 22:40, 22 November 2007 (UTC)
-== morse code ==
-:''Didymium glass was used during World War I to send Morse Code across the battlefields. The glass filter caused only imperceptible fluctuation in the overall light intensity, but the intended receiver had a set of binoculars fitted with a spectroscope wherewith to see the neodymium absorption bands flashing on and off.''
-Seems unlikely. Removed pending citations etc. [[Special:Contributions/24.95.50.240|24.95.50.240]] ([[User talk:24.95.50.240|talk]]) 06:47, 25 November 2007 (UTC)
-there is perhaps more nonsence in old glas section. Leo vel Ludvig die 1916 and the Czech "Moser Company" glass was awrded in Paris in 1925 thus before "its discovery"  in 1927 a s the article claim . http://www.moser-glass.com/en/tradition/glass-museum  <small>—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/24.15.124.119|24.15.124.119]] ([[User talk:24.15.124.119|talk]]) 23:44, 14 April 2008 (UTC)</small><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
-The book "Moser 1857 - 1997" officially published by the Moser company, by Jan Mergl and Lenka Pankova, describe the 1927 experiments, and reference the Leo Moser papers now in the Corning Glass Museum, Corning New York.  The 1925 Award had nothing whatsoever to do with rare earth glass coloration.  <span style="font-size: smaller;" class="autosigned">—Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/98.244.71.39|98.244.71.39]] ([[User talk:98.244.71.39|talk]]) 01:27, 4 November 2009 (UTC)</span><!-- Template:UnsignedIP --> <!--Autosigned by SineBot-->
-==Not Discovered in 1885==
-Apparently Neodymium was discovered in 1925 by C.F. Aver von Welsbach as detailed at http://www.chemicalelements.com/elements/nd.html [[Special:Contributions/203.206.36.108|203.206.36.108]] ([[User talk:203.206.36.108|talk]]) 12:43, 15 October 2009 (UTC)
-:That what they say. [[Carl Auer von Welsbach]] died in 1929 and was not that active (experimentally) in his last years. Materialscientist ([[User talk:Materialscientist|talk]]) 00:05, 16 October 2009 (UTC)
-== Meh? ==
-Sorry if the de-redlinking was uncalled for. But why? Redlinks are ugly. Are they there to inform people, encourage them to write about them? Answer yes/no. [[User:2D Backfire Master|'''<span style="color:black">2J Bäkkvire Maestro</span>]]''' <sup>[[User talk:2D Backfire Master|<span style="color:#800000">Test UR Skill!</span>]]</sup> <sub>[[Special:Contributions/2D Backfire Master|What I've Done]]</sub> 04:58, 15 February 2010 (UTC)
-:Please read [[WP:REDLINK]]. The whole issue causes me a certain amount of anger, I admit, since I have argued that redlinks be green since red causes many people to think that they are ugly or distracting and that they need to be removed for that reason alone. In that argument I alway get some idiot who says "not so!". And then I go back to WP and find people like yourself who are removing redlinks precisely for that reason. [[User:Sbharris|<font color="blue">S</font>]][[User:Sbharris|<font color="orange">B</font>]][[User:Sbharris|H]][[User:Sbharris|arris]] 23:51, 24 February 2011 (UTC)
-== there is no neodym in Bastnäsite ?  ==
-from the banästite link: "There is bastnäsite-(Ce) with a more accurate formula of (Ce, La)CO3F. There is also bastnäsite-(La) with a formula of (La, Ce)CO3F. And finally there is bastnäsite-(Y) with a formula of (Y, Ce)CO3F."
-so, it should be mentioned in banästit and on neodym, that most rare earths are very similar and occur in mixed contributions. In truth, it seems even to be a Wrong citation: from the banästit link, the mineral "parisite" should be used as Banästite does Not contain neodymium as seems.  "Bastnäsite is closely related to the mineral series parisite.[6] The two are both rare earth fluorocarbonates, but parisite's formula of Ca(Ce, La, Nd)2(CO3)3F2 contains calcium (and a small amount of neodymium) and a different ratio of constituent ions. Parisite could be viewed as a formula unit of calcite (CaCO3) added to two formula units of bastnäsite. In fact, the two have been shown to alter back and forth with the addition or loss of CaCO3 in natural environments.[citation needed]" --[[User:Wikistallion|Wikistallion]] ([[User talk:Wikistallion|talk]]) 12:37, 3 February 2013 (UTC)
-:I don't fully understand your point. As far as I know, any lanthanide, including Nd substitutes "La" in the bastnäsite structure, La is just more common, same for parisite. The difference between bastnäsite and parisite is mainly in the crystalline structure, not in the content of a particular lanthanide (which rather depends on geological factors). Materialscientist ([[User talk:Materialscientist|talk]]) 12:47, 3 February 2013 (UTC)
-:This article gives the {{doi:10.1111/j.1751-3928.2008.00068.x}} gives the bastenasite from Mountain Pass with 33.79% La; 45.59%; Pr 4.65%; Nd 15.82% (100% = REO+Y2O3).--[[User:Stone|Stone]] ([[User talk:Stone|talk]]) 20:41, 4 February 2013 (UTC)
-==Recycling method for neodymium and samarium==
-Perhaps mention in article, see [http://www.recyclinginternational.com/recycling-news/6976/research-and-legislation/belgium/new-liquid-extraction-frontier-rare-earths Recycling of neodymium and samarium]
-[[User:KVDP|KVDP]] ([[User talk:KVDP|talk]]) 07:58, 1 June 2013 (UTC)