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Lunar Meteorite

Dhofar 1527 and unnamed 96
paired stones

Oman

 

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Two views of Dhofar 1527

(photo credit: Luc Labenne)

 

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lm_dhofar1527_4207.jpg

A slice of Dhofar 1527 under different lighting conditions. Note the large grains of metal.

(photo credit: Randy Korotev)

 

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Unnamed 96

(photo credit: anonymous finder)

 

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Lab sample of unnamed 96

(photo credit: Randy Korotev)

 

from The Meteoritical Bulletin, No. 100

Dhofar 1527

Zufar, Oman
Found: 2009 March
Mass: 42.6 g

Lunar meteorite (feldspathic breccia)

History: A complete stone recovered by Jim Labenne in March, 2009.

Petrography: (H. Haack, NHMD) Metal-rich clast-laden vitric breccia consisting of glass and fine-grained mineral debris (mostly pyroxenes, olivine, anorthite and metal), melt breccia fragments and polycrystalline igneous clasts. Clast sizes to 3 mm. Mineral clasts include anorthitic plagioclase, low-Ca pyroxene, olivine, kamacitic and troilite. Lithic clasts include rare basalts (composed of plagioclase and pyroxene) and troctolite (composed of plagioclase and olivine). Metal grains are partially oxidized. Some olivine grains are partially to totally altered by weathering. Veinlets filled with alteration products are abundant.

Geochemistry: Olivine (Fa20-37), plagioclase (An93-98), pigeonite (Fs21-29Wo8-11), and augite (Fs6-8 Wo32-36). Bulk composition: (R. Korotev, WUSL): 25% Al2O3, 8.0% FeO, 8.2% MgO, 1200 ppm Ni, 1.1 ppm Sm, 89 ppb Ir, 0.5 ppm Th.

Classification: Achondrite (lunar, feldspathic breccia).

Specimens: A total of 8.56 g is deposited at NHMD.

 

Randy Says…

Dhofar 1527 is loaded with iron-nickel metal and, consequently, has the highest concentrations of platinum-group elements of any lunar meteorite. My sample of the presumed pair (based on lithophile element concentrations) does not contain much metal.

 

More Information

Meteoritical Bulletin Database

Dhofar 1527

Map

Schematic Map of the Find Locations of the Dhofar Lunar Meteorites

References

Korotev R. L. (2012) Lunar meteorites from Oman. Meteoritics & Planetary Science 47, 1365–1402. doi: 10.1111/j.1945-5100.2012.01393.x

Korotev R. L (2013) Siderophile elements in brecciated lunar meteorites (abstract). In Lunar and Planetary Science XLIV, abstract no. 1028.

Korotev R. L and Irving A. J. (2013) Keeping up with the lunar meteorites - 2013 (abstract). In 44th Lunar and Planetary Science Conference, abstract no. 1216.

 

 

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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: 2-November-2016