Meteoritical Bulletin: Entry for Acfer 234

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Acfer 234

Basic information

Name: Acfer 234
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 1991
Country: Algeria
Mass: 621 g

Classification
history:

NHM Catalogue:	5th Edition	(2000)	Iron
MetBase:	v. 7.1	(2006)	Iron-finest octahedrite
Meteoritical Bulletin:	MB 99	(2011)	Iron, IAB-ung
Recommended:			Iron, IAB-ung [explanation]

This is 1 of 68 approved meteorites classified as Iron, IAB-ung. [show all]
Search for other: IAB complex irons, Iron meteorites, and Metal-rich meteorites

Comments:

Approved 26 Aug 2010

Writeup

Writeup from MB 99:

Acfer 234 27°30’4"N, 4°5’55"E

Tamanghasset, Algeria

Found: 1991

Classification: Iron meteorite (IAB, ungrouped)

Petrography (F. Brandstaetter, NHMV): Kamacite bandwidth 0.082 mm; swathing kamacite around troilite up to > 200 μm. Inclusions are troilite, schreibersite and phosphates. Troilite is most abundant forming "nodules" 1 to 3 mm. No silicates were recognized. Two different (Fe, Mn, Mg, Na) phosphates are present.

Geochemistry: Co (mg/g) 4.48, Ni (mg/g) 87.3, Ga (µg/g) 21.2, Ge (µg/g) ~100, As (µg/g) 12.7, Ir (µg/g) 5.01, Au (µg/g) 1.28

Data from:
  MB99
  Table 0
  Line 0:

State/Prov/County:	Tamanghasset
Date:	1991
Latitude:	27°30'4"N
Longitude:	4°5'55"E
Mass (g):	621
Pieces:	1
Class:	Iron, IAB-ung
Classifier:	Wasson
Type spec mass (g):	535
Type spec location:	NHMV
Main mass:	NHMV
Comments:	Submitted by Wasson

Institutions
and collections

NHMV: Naturhistorisches Museum, Burgring 7, 1010 Wien, Austria, Austria; Website (institutional address; updated 18 Jan 2019)

Catalogs:

Search for specimens in the Smithsonian Institution collection (U.S.):

References:

Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]

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Geography:

Algeria

Coordinates:
Recommended::	(27° 30' 4"N, 4° 5' 55"E)

Statistics:
This is 1 of 426 approved meteorites from Tamanghasset, Algeria (plus 2 unapproved names) (plus 2 impact craters)
This is 1 of 1306 approved meteorites from Algeria (plus 30 unapproved names) (plus 4 impact craters)

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