Talk:Magnesium
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Article changed over to new Wikipedia:WikiProject Elements format by maveric149. Elementbox converted 10:08, 23 Jun 2005 by Femto (previous revision was that of 08:01, 11 Jun 2005).
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[edit] Information Sources
Some of the text in this entry was rewritten from Los Alamos National Laboratory - Magnesium. Additional text was taken directly from USGS Magnesium Statistics and Information, USGS Periodic Table - Magnesium, from the Elements database 20001107 (via dict.org), Webster's Revised Unabridged Dictionary (1913) (via dict.org) and WordNet (r) 1.7 (via dict.org). Data for the table were obtained from the sources listed on the subject page and Wikipedia:WikiProject Elements but were reformatted and converted into SI units.
[edit] Talk
[edit] Compounds
I am interested in what compounds Magnesium might form with Silicon and Yttrium. If anyone has lab equipment suitable for experiments of this nature, would you mind trying these and posting your findings here?
Other things you might try:
- Mg + Co
- Mg + Cr
- And the Radioactive Elements
According to the ASM Hand Book
Mg-Si crystallographic data Phase Composition, wt% Si Pearson symbol Space group (Mg) 0 hP2 P63/mmc Mg2Si 36.61 cF12 Fmm (Si) 100 cF8 Fdm High-pressure phases Mg2Si(a) 36.61 . . . . . . SiII 100 . . . . . .
(a) Above 2.5 GPa and 900 °C, it forms a hexagonal structure.
Mg-Si (Magnesium - Silicon) A.A. Nayeb-Hashemi and J.B. Clark, 1988
A.A. Nayeb-Hashemi and J.B. Clark, 1988, Phase Diagramsof Binary Magnesium Alloys, ASM International, MetalsPark, OH, USA
The powder used in athletics is not the metal User:JCWF
Althetic chalk is made of magnesium carbonate. Please fix the article is it states that the metal form of magnesium is used. --mav
The article says that "Once ignited, it is difficult to extinguish, being able to burn in both nitrogen (forming magnesium nitride), and carbon dioxide."
The titanium article on this website says that only titanium can burn in nitrogen. Can magnesium not burn in a pure nitrogen atmosphere, but can still burn nitrogen when its in the air? If so, then this should be made more clear.
- Google found a number of "elements" pages that repeat the claim that only titanium burns in nitrogen. But there is a US Dept of Energy handbook on spontaneous heating and pyrophoricity that claims "Magnesium may also burn in an atmosphere of nitrogen to form magnesium nitride." [1] The same page mentions titanium as also having this property. Both metals burn in a CO2 atmosphere as well. Anyway, I tend to believe this reference. It looks like the titanium article needs updating if the DoE handbook is correct. If people have lingering doubts, maybe someone with access to CRC or some other source could find a corroborating authoritative reference.
The autoignition temperature for magnesium is nowhere close to 4000 F. It is a mere 1205 F, which corresponds to 652 C or 925 K.
Also, magnesium is the 6th most abundant metal according to Dr. Doron Aurbach of the Bar-Ilan University in Israel. Dr. Doron Aurbach is currently working on rechargeable magnesium batteries and has previously discovered several improvements to the Lithium-Ion battery used in most cell phones and other mobile devices this very moment.
I have also done my research on magnesium since I wrote an entire essay (4000 words), and its ability to combust in an atmosphere of carbon dioxide, or even within solid carbon dioxide, more commonly known as dry ice. This essay was checked for accuracy by two experts at the University of Helsinki. To the point, my sources also indicate that magnesium can burn in an atmosphere of nitrogen, as can titanium.
[edit] Insufficient magnesium
I totally disagree with the statments about insufficient magnesium intake, an healty person will very rarly be affected by severe symptoms, see source: Centre Evian pour l'eau (in French) I'm looking for an English source, but what they say is: "Acute deficiency is rare. It is never due to an insufficiency of food contribution. It is the fact of various specific diseases whose majority are rare." --Astrowob 00:22, 17 Apr 2005 (UTC)
- Your quote refers to "acute deficiency". But there is ample evidence that hypomagnesemia is common. See for example this Feb 2005 article in the Journal of Family Practice, including the footnotes referring to several relevant studies/papers.
The powder used in athletics is not the metal User:JCWF
Althetic chalk is made of magnesium carbonate. Please fix the article is it states that the metal form of magnesium is used. --mav
The article says that "Once ignited, it is difficult to extinguish, being able to burn in both nitrogen (forming magnesium nitride), and carbon dioxide."
The titanium article on this website says that only titanium can burn in nitrogen. Can magnesium not burn in a pure nitrogen atmosphere, but can still burn nitrogen when its in the air? If so, then this should be made more clear.
Google found a number of "elements" pages that repeat the claim that only titanium burns in nitrogen. But there is a US Dept of Energy handbook on spontaneous heating and pyrophoricity that claims "Magnesium may also burn in an atmosphere of nitrogen to form magnesium nitride." [1] (http://www.eh.doe.gov/techstds/standard/hdbk1081/hbk1081c.html) The same page mentions titanium as also having this property. Both metals burn in a CO2 atmosphere as well. Anyway, I tend to believe this reference. It looks like the titanium article needs updating if the DoE handbook is correct. If people have lingering doubts, maybe someone with access to CRC or some other source could find a corroborating authoritative reference. The autoignition temperature for magnesium is nowhere close to 4000 F. It is a mere 1205 F, which corresponds to 652 C or 925 K.
Also, magnesium is the 6th most abundant metal according to Dr. Doron Aurbach of the Bar-Ilan University in Israel. Dr. Doron Aurbach is currently working on rechargeable magnesium batteries and has previously discovered several improvements to the Lithium-Ion battery used in most cell phones and other mobile devices this very moment.
I have also done my research on magnesium since I wrote an entire essay (4000 words), and its ability to combust in an atmosphere of carbon dioxide, or even within solid carbon dioxide, more commonly known as dry ice. This essay was checked for accuracy by two experts at the University of Helsinki. To the point, my sources also indicate that magnesium can burn in an atmosphere of nitrogen, as can titanium.
[edit] Insufficient magnesium I totally disagree with the statments about insufficient magnesium intake, an healty person will very rarly be affected by severe symptoms, see source: Centre Evian pour l'eau (in French) (http://www.centre-evian.com/dossier_presse/index.html?contenu-medias.html?http://www.centre-evian.com/dossier_presse/dos-media/11132.html?http://www.centre-evian.com/dossier_presse/dos-media/11132.html) I'm looking for an English source, but what they say is: "Acute deficiency is rare. It is never due to an insufficiency of food contribution. It is the fact of various specific disease
i love the info. your giving but try to give it more"curb-appeal".
[edit] Uses
The extremely high temperature at which magnesium burns makes it a handy tool for starting emergency fires during outdoor recreation. Some camping equipment suppliers sell a small block of magnesium with a flint strip on one side. It is used to make camp and emergency fire. You shave the magnesium with a knife, then strike the flint with the blade to ignite it.
Description from Cabelas: This handy tool consists of a small block of solid magnesium, with a full-length flint sparking insert set into one edge. The soft magnesium is scraped with a pocket knife into a small pile, which is ignited by scraping the edge of the sparking insert with the knife. Ignites to a temperature of 5,400°F, more than enough to light the most stubborn campfire. Works even if wet. PrometheusX303 23:01, 3 March 2006 (UTC)
[edit] See Also
this should probably state that its 70% of the proven reserves, as 70% of the earth's Iron and Magnesium ore is somewhat presumptuous - NDR
