Meteoritical Bulletin: Entry for Allan Hills 85004

MetSoc Home Publications Contacts

Search the Meteoritical Bulletin Database
Last update: 15 Apr 2024
Search for:	Search type:	Search limits:	Display:	Publication:
Names Text Places Classes Years	Contains Starts with Exact Sounds like	NonAntarctic Falls Non-NWAs Has strewnfield		What's new in the last:
Include past classifications in search		Has photo	Limit to approved meteorite names
Search text:

Allan Hills 85004

Basic information

Name: Allan Hills 85004
This is an OFFICIAL meteorite name.
Abbreviation: ALH 85004
Observed fall: No
Year found: 1985
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass: 8.4 g

Classification
history:

Antarctic Meteorite Newsletter:	AMN 10(1)	(1987)	C2
	AMN 17(1)	(1994)	CM2
Meteoritical Bulletin:	MB 76	(1994)	CM2
NHM Catalogue:	5th Edition	(2000)	CM2
MetBase:	v. 7.1	(2006)	CM2
Recommended:			CM2 [explanation]

This is 1 of 636 approved meteorites classified as CM2. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites

Writeup

Writeup from AMN 10(1):

Sample No.: ALH85004

Location: Allan Hills

Weight (g): 8.4

Field No.: 2298

Dimensions (cm): ten pieces

Meteorite Type: C2 Chondrite

Macroscopic Description: René Martinez

ALH85004 consists of ten fragments plus many fines. All fragments are black and fine-grained.

Thin Section (,3) Description: Brian Mason

The thin section shows small chondrules, irregular aggregates, and mineral grains in a dark brown to black matrix. Practically all the chondrules, aggregates, and mineral grains consist of pale green isotropic serpentinous material; a few grains of calcite were identified. The meteorite is a C2 chondrite; the extreme degree of serpentinization is reminiscent of ALH83100.

Data from:
  MB76
  Table 2
  Line 1233:

Origin or pseudonym:	Far Western
Mass (g):	8.4
Class:	CM2
Weathering grade:	B
Comments:	83100 pairing group

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(1) (1987), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)

Find references in NASA ADS:
Find references in Google Scholar:

Geography:

Antarctica

Coordinates:
Catalogue of Meteorites:	(76° 43'S, 159° 40'E)
Recommended::	(77° 2' 6"S, 157° 10' 51"E)

Note: the NHM and MetBase coordinates are 72.4 km apart

Statistics:
This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names)

Proximity search:

Crosslinks:

This lists all records that are linked to this record and to each other.

Also see:

This lists the most popular meteorites among people who looked up this meteorite.

Revision
history:

This lists important revisions made to data for this record.

Direct link to this page