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Lunar Meteorite

Dhofar 490 & 1084
(paired stones)

Oman

 

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lm_dhofar1084_haberer_n.jpg

Dhofar 1084 in the field.

(photo credit: Siegfried Beutel)

 

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Slices of Dhofar 490 (top) and Dhofar 1084 (bottom)

(photo credit: Randy Korotev)

 

from The Meteoritical Bulletin, No. 87, Meteoritics & Planetary Science 38, A189–A248 (2003)

Dhofar 490

Oman
Found: 2001 March 17
Mass: 34.05 g  

Lunar meteorite (anorthositic fragmental breccia) 

A dark grey, crusted stone weighing 34.05 g was found in the Dhofar region of Oman.

Classification and mineralogy (A. Greshake, MNB and M. Kurz, Kurz): meteorite is an anorthositic fragmental breccia consisting of clasts of various lithologies embedded into a glassy, partly devitrified fine-grained matrix; the clast size is generally below 3 mm; vesicles are abundant; feldspar: An96.0-99.3; pyroxene: Fs11.5-35.7Wo8.2-44.9 and olivine: Fa30.6-50.0; augites dominate over Ca-poor pyroxenes and often contain pigeonite exsolution lamellae; accessory phases are Fe-Ni metal and ilmenite; crystalline fragments include microporphyritic impact melt breccias, intersertal impact melt clasts, gabbroic anorthosites, and large feldspar; no mare basalt clasts and no glass spherules have been identified; feldspar generally shows pronounced undulatory extinction and sometimes mosaicism indicating strong shock metamorphism; the meteorite is moderately weathered; gypsum, celestite and calcite occur in cracks and holes; Dhofar 490 may be paired with Dhofar 280 since they were found nearby* and have similar mineralogical characteristics; specimens: 7 g and one thin section, MNB; main mass with anonymous finder.


* Randy's note: The reported find locations are separated by 76 km. Dhofar 490/1084 and Dhofar 081/280/910 are not paired.

 

from The Meteoritical Bulletin, No. 88, Meteoritics & Planetary Science 39, A215–A272 (2004) (Table 5)

Dhofar 1084

 

lunar rock type

date found

mass
(g)

number
of pieces

An

Fa

Fs

Dhofar 908

breccia

? Jan 2003

245

9

93-99

31±9

27±7.5

Dhofar 909

breccia

2 Feb 2003

3.9

1

94-98

26.5±5

24±5

Dhofar 910

breccia

142

1

94-100

34±9

30±7

Dhofar 911

breccia

194

9

93-98

26±3

22±5

Dhofar 1084

10 Apr 2003
4 Oct 2003*

90

1

92-98

43±5

30±9

Dhofar 1085

1 Oct 2003

197

4

93-99

34±10

31±8


* fide: Siegfried Beutel

 

Randy Says…

Compositionally, Dhofar 490/1084 is a typical feldspathic lunar meteorite.

 

More Information

Meteoritical Bulletin Database

Dhofar 490 | 1084

Map

Schematic Map of the Find Locations of the Dhofar Lunar Meteorites

References

Fritz J. (2012) Impact ejection of lunar meteorites and the age of Giordano Bruno. Icarus 221, 1183-1186.

Korotev R. L. (2005) Lunar geochemistry as told by lunar meteorites. Chemie der Erde 65, 297–346.

Korotev R. L. (2006) New geochemical data for a some poorly characterized lunar meteorites (abstract). In Lunar and Planetary Science XXVII, number 1404, Lunar and Planetary Institute, Houston.

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. (2017) Update (2012–2017) on lunar meteorites from Oman. Meteoritics & Planetary Science 52, 1251-1256.
All Korotev data on Omanian lunar meteorites.

Korotev R. L., Irving A. J., and Bunch T. E. (2008) Keeping up with the lunar meteorites – 2008 (abstract). In Lunar and Planetary Science XXXIX, abstract no. 1209, 39th Lunar and Planetary Science Conference, Houston.

Nishiizumi K. and Caffee M. W. (2006) Constraining the number of lunar and martian meteorite falls (abstract). In Meteorit. Planet. Sci. 41, p. A133, 69th Annual Meeting, Meteoritical Society.

 

 

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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: 28-June-2017