Chemistry of the Apollo 11 highland component

Details Chemistry of the Apollo 11 highland component Chemistry of the Apollo 11 highland component

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983lpsc...14..139l&link_type=abstract

(American Geophysical Union and NASA, Lunar and Planetary Science Conference, 14th, Houston, TX, Mar. 14-18, 1983) Journal of Ge

Mathematics

Logic

6

Apollo 11 Flight, Chemical Composition, Highlands, Lunar Rocks, Neutron Activation Analysis, Petrography, Abundance, Anorthosite, Chondrites, Europium, Gabbro, Kreep, Lunar Soil, Rare Earth Elements, Trace Elements, Moon, Samples, Lunar, Chemistry, Apollo 11, Highlands, Trace Elements, Major Elements, Minor Elements, Neutron Activation Analysis, Fragments, Inaa, Laboratory Studies, 10085, Classification, Procedure, Systematics, Petrography, Fines, Abundance, Composition, Lithophiles, Potassium, Rare Earth E

Scientific paper

Thirty-eight Apollo 11 lunar highland fragments from coarse fines 10085 have been subjected to petrologic and chemical study. Six major chemical groups are identified: (a) high-K KREEP; (b) anorthosite with a 10X chondrite positive Eu anomaly and anorthosite with 30X positive Eu anomaly; (c) ANT; (d) LKFM; (e) anorthositic gabbro with no Eu anomaly, with a positive Eu anomaly, and with a negative Eu anomaly; and (f) dominant Highland component, 2X-10X chondrite with a positive 10X-14X Eu anomaly. Newly recognized groups are presented based on the REE patterns: (a) ANT group with 5X La and a 22X positive Eu anomaly; (b) 10X flat with 14X positive Eu anomaly; and (c) 2-3X flat with a 10X positive Eu anomaly. The highland suite is very low in K and REE, and is overall quite similar to the Apollo 16 suite.

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