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Allan Hills A76009
Basic information Name: Allan Hills A76009
     This is an OFFICIAL meteorite name.
Abbreviation: ALHA76009
This meteorite may also be called Allan Hills 76009 (ALH 76009) in publications.

Observed fall: No
Year found: 1976 or 1977
Country: Antarctica [Collected jointly by ANSMET (US) and NIPR (Japan)]
Mass:help 407 kg
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 1(3)  (1978)  L6
Meteoritical Bulletin:  MB 56  (1979)  L6
MB 76  (1994)  L6
NHM Catalogue:  5th Edition  (2000)  L6
NIPR Catalogue:  2000 Edition  (2000)  L6
MetBase:  v. 7.1  (2006)  L6
Recommended:  L6    [explanation]

This is 1 of 10989 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from MB 56:
Warning: the following text was scanned and may contain character recognition errors. Refer to the original to be sure of accuracy.

DISCOVERY OF THE ALLAN HILLS A76009, ANTARCTICA, STONY METEORITE

Name: ALLAN HILLS A76009

Place of find: West of Allan Nunatak on the edge of the Polar plateau, Victoria Land, Antarctica.

76°42'26"S., 159°07'43"E.

Date of find: January 20, 1977.

Class and type: Stone. Olivine-hypersthene chondrite (L6). Olivine Fa24.1.

Number of individual

specimens: 33

Total weight: 407 kg

Circumstances of find: Found during a helicopter search over an area of bare ice during the 1976-1977 season of the U.S.-Japan Joint Antarctic Expedition.

Source: K. Yanai, 1978. First meteorites found in Victoria Land, Antarctica, December 1976 and January 1977. Mem. Nat. Inst. Polar Res., Special Issue No. 8, 51-69.

Note: Also known as Allan Nunatak No. 9 and as Allan Hills No. 9. Allan Hills A76009 is the name approved by the Nomenclature Committee of the Meteoritical Society.

See also: W.A. Cassidy, E. Olsen and K. Yanai, 1977. Antarctica: a deep-freeze storehouse for meteorites. Science 198, 727-731, where the coordinates of the find site are given as 76°43'14"S., 159°17'39"E., and E. Olsen etal., 1978. Eleven new meteorites from Antarctica, 1976-1977. Meteoritics 13, 209-225.


[From Antarctic Meteorite Newsletter 4(1):]

Sample No.: ALHA76009

Location: Allan Hills

Field No.:

Weight (gms): 3950.5

Meteorite Type: L6 Chondrite

 

Physical Description:

Stone possesses remnants of a black fusion crust (~1 mm thick). Much of the crust is fractured in a polygonal pattern. The specimen is fractured. One large, severely weathered fracture runs through the meteorite. Dimensions: 18 x 13 x 7.6 cm.

 

Petrographic Description:

This meteorite described as Allan Hills #9 in Olsen et al., 1978.

Data from:
  MB76
  Table 2
  Line 9:
Origin or pseudonym:Main icefield
Mass (g):407 kg
Class:L6
Weathering grade:B
Fayalite (mol%):24
Ferrosilite (mol%):21
Comments:26Al=65±5; NTL=10.4±0.1
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 1(3) (1978), JSC, Houston
Published in Meteoritical Bulletin, no. 56, Meteoritics 14, 161-175 (1979)
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Mike Bandli   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Aeroliths Collection Theodossiou   
akira1988   
Alan Mazur   
Argus Rocks   
bphd   
Brice D. Hornback   
Corey Kuo   
David Hardy   
David L. Ribeca      
Franco Vignato   
Gerald Armstrong   
Kamil Maciag (meteoryt)   
MeteoriteCollector.org - AMNH - New York   
MeteoriteCollector.org - FCOM - Russ Finney      
MeteoriteCollector.org - NIPR - Polar Research   
Michael S. Scherman      
Phil Schmitz   
Robert Zdancewicz   
Wang Ziyao      
Woreczko Jan & Wadi   
Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 43'S, 159° 40'E)
     Recommended::   (76° 43'S, 159° 40'E)

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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Synonymshelp: ALHA769 (Added by JNG 2/23/06)
Allan Hills No. 9 (Added by JNG 2/23/06)
Allan Nunatak No. 9 (Added by JNG 2/23/06)

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