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Element Abundances in the Moon

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Element

Average

Terrae

Maria

Oxygen

60.9%

61.1 ± 0.9 % 

60.3 ± 0.4 %

Silicon

16.4%

16.3 ± 1.0 % 

16.9 ± 1.0 %

Aluminum

 9.4%

10.1 ± 0.9 % 

 6.5 ± 0.6 %

Calcium

 5.8%

 6.1 ± 0.6 % 

 4.7 ± 0.4 %

Magnesium

 4.2%

 4.0 ± 0.8 % 

 5.1 ± 1.1 %

Iron

 2.3%

 1.8 ± 0.3 % 

 4.4 ± 0.7 %

Sodium

 0.4%

 0.4 ± 0.1 % 

 0.4 ± 0.1 %

Titanium

 0.3%

0.15 ± 0.08 %

 1.1 ± 0.6 %

Reference    (Click the button next to a value above to see complete citation information for that entry)

Turkevich, Anthony L. "The Average Chemical Composition of the Lunar Surface." pp. 1159–1168 in Proceedings of the Fourth Lunar Science Conference, volume 2. Houston, TX, March 5–8, 1973. Edited by W. A. Gose. Oxford: Pergamon Press, 1973.

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