Meteoritical Bulletin: Entry for Allan Hills 83017

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Allan Hills 83017

Basic information

Name: Allan Hills 83017
This is an OFFICIAL meteorite name.
Abbreviation: ALH 83017
Observed fall: No
Year found: 1983
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 0.6 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 10(2)	(1987)	L3
Meteoritical Bulletin:	MB 76	(1994)	L3.5
NHM Catalogue:	5th Edition	(2000)	L3.5
MetBase:	v. 7.1	(2006)	L3.5
Recommended:			L3.5 [explanation]

This is 1 of 95 approved meteorites classified as L3.5. [show all]
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)

Writeup

Writeup from AMN 10(2):

Sample No.: ALH83017

Location: Allan Hills

Weight (g): 0.6

Field No.: 2127

Dimensions (cm): 1 x 0.8 x 0.3 cm

Meteorite Type: L3 Chondrite

Macroscopic Description: Carol Schwarz

This tiny specimen is totally covered with fusion crust which is bubbly on one surface. The entire chip was used to make a thin section.

Thin Section (,1) Description: Brian Mason

Chondrules and chondrule fragments are abundant, ranging up to 1.8 mm across; most are granular or porphyritic olivine and olivine-pyroxene, but barred olivine and fine-grained pyroxene chondrules are also present. Nickel-iron and sulfide are present in minor amounts. The section is completely surrounded by fusion crust. Microprobe analyses show olivine ranging in composition from Fa0.8 to Fa28, with a mean of Fa19 (CV FeO is 50); pyroxene composition ranges from Fs4 to Fs20. The meteorite is an L3 chondrite (probably L3.5).

Data from:
  MB76
  Table 2
  Line 900:

Origin or pseudonym:	Middle Western
Mass (g):	0.6
Class:	L3.5
Fayalite (mol%):	0.8-28
Ferrosilite (mol%):	4-20

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):	Require SI photo
Search for this meteorite in the NASA/JSC database (U.S.):

References:

Published in Antarctic Meteorite Newsletter 10(2) (1987), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)

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Geography:

Antarctica

Coordinates:
Catalogue of Meteorites:	(76° 43'S, 159° 40'E)
Recommended::	(76° 49' 20"S, 158° 12' 22"E)

Note: the NHM and MetBase coordinates are 39.1 km apart

Statistics:
This is 1 of 43700 approved meteorites from Antarctica (plus 3802 unapproved names)

Proximity search:

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