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Lunar Meteorite

Dhofar 1769

Oman

 





Dhofar 1769. Rounded clasts such as that in the bottom image are rare in lunar meteorites.

(photo credit: anonymous finder)

 

lm_dhofar1769_2823m.jpg

Lab sample of Dhofar 1769. Click on image for enlargement.

(photo credit: Randy Korotev)

 

 

from The Meteoritical Bulletin, No. 104

Dhofar 1769

Zufar, Oman
Found: 2012 October 28
Mass: 125.4 g

Classification: Lunar meteorite

History: A single stone was found by an anonymous finder Oct. 28, 2012

Petrography: The anorthositic highland breccia contains clasts up to 1 cm, which are mainly anorthositic lithologies and crystalline impact melt breccias. It also contains glassy fragments, some of which are highly vesicular, veins, and impact spherules (mostly devitrified) embedded in a fine-grained, clastic matrix. The spherules indicate an origin at the lunar surface. Accessory minerals: ilmenite (abundant), troilite, FeNi metal (rare), and zircon (very rare).

Geochemistry: SEM-EDS-analyses revealed that plagioclase in the bulk rock is anorthitic with a mean of An93.4±5.1 (total range: An70-97; n = 32). Olivine is highly variable in composition Fo20-60 (mean: Fo40±9; n = 16; Fe/Mn = approx. 110 (EDS)). Low-Ca pyroxene also shows variable composition with Fs20-58En29-77Wo2.5-15 (mean: Fs37.5±10En54.6±10Wo7.8±3.3; n = 28; Fe/Mn = approx. 60 (EDS). Some analyzed Ca-pyroxenes have Fs18-34En28-45Wo33-41. The meteorite is moderately weathered.

Classification: Lunar meteorite (anorthositic breccia)

 

Randy Says…

This is a new one. 

 

More Information

Meteoritical Bulletin Database

Dhofar 1769

Map

Schematic Map of the Find Locations of the Dhofar Lunar Meteorites

References

Korotev R. L. and Irving A. J. (2017) Still not keeping up with the lunar meteorites – 2017. 48th Lunar and Planetary Science Conference, abstract no. 1498.

 

 

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Prepared by
: Randy L. Korotev
 
Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don't contact me about the meteorite you think you've found until you read this and this.


e-mail
korotev@wustl.edu

Last revised: 17-February-2017