Magnesium is the chemical element in the periodic table that has the symbol Mg and atomic number 12 and an atomic mass of 24.31. Magnesium is the eighth most abundant element and constitutes about 2% of the Earth's crust by weight, and it is the third most plentiful element dissolved in seawater. The free element (metal) is not found in nature. Once produced from magnesium salts, this alkaline earth metal is primarily used as an alloying agent to make aluminium-magnesium alloys, sometimes called "magnalium" or "magnelium".
Isotopes
26Mg is a stable isotope that has found application in
isotopic geology, similar to that of
aluminium.
26Mg is a
radiogenic daughter product of
26Al, which has a
half-life of 717,000 years. Large enrichments of stable
26Mg have been observed in the
Ca-Al-rich inclusions of some
carbonaceous chondrite meteorites. The anomalous abundance of
26Mg is attributed to the decay of its parent
26Al in the inclusions. Therefore, the meteorite must have formed in the
solar nebula before the
26Al had decayed. Hence, these fragments are among the oldest objects in the
solar system and have preserved information about its earliest history.
It is conventional to plot 26Mg/24Mg against an Al/Mg ratio. In an isochrone plot, the Al/Mg ratio plotted is27Al/24Mg. The slope of the isochron has no age significance, but indicates the initial 26Al/27Al ratio in the sample at the time when the systems were separated from a common reservoir.
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Re: dissolve magnesium in organic solvent: You could make a Grignard reagent with a haloalkane and this should .. http://twurl.nl/xdbljz
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Antibiotics can lead to vitamin A, B-12, C, E, K, Biotin, Calcium, Iron, Magnesium, Potassium deficiencies
3. A useful source of minerals including calcium, sodium, potassium, iron, chromium, magnesium, manganese, copper and zinc.Aloesveranurse (Mandy Young) Tue, 03 Nov 2009 10:34:31 -0000
3. A useful source of minerals including calcium, sodium, potassium, iron, chromium, magnesium, manganese, copper and zinc.
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