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Guelb Dahmani 001
Basic information Name: Guelb Dahmani 001
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2020
Country: Algeria
Mass:help 728 g
Classification
  history:
Recommended:  L5    [explanation]

This is 1 of 8581 approved meteorites (plus 4 unapproved names) classified as L5.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 6 Aug 2022
Writeuphelp
Writeup from MB 111:

Guelb Dahmani 001        26.254°N, 4.070°W

Adrar, Algeria

Find: 2020 Dec 12

Classification: Ordinary chondrite (L5)

History: Found by a team of Algerian hunters represented by David Lehman.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Sparse chondrules aoccur within a recrystallized assemblage containing kamacite (typically altered), taenite (less altered), troilite, sodic plagioclase, chlorapatite (some grains up to 150 µm) and merrillite.

Geochemistry: Olivine (Fa25.0±0.2, range Fa24.8-25.3, N = 5), low-Ca pyroxene (Fs21.1±0.1Wo1.4±0.1, range Fs21.0-21.2Wo1.2-1.5, N = 4), augite (Fs7.6±0.9Wo45.6±0.9, range Fs6.8-8.8Wo46.3-44.6, N = 3).

Classification: Ordinary chondrite (L5).

Specimens: 34.4 g including one polished thin section at UWB; remainder with Mr. D. Lehman.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Adrar
Date:2020 Dec 12
Latitude:26.254°N
Longitude:4.070°W
Mass (g):728
Pieces:1
Class:L5
Shock stage:S2
Weathering grade:W2
Fayalite (mol%):25.0±0.2
Ferrosilite (mol%):21.1±0.1
Wollastonite (mol%):1.4±1.1
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):34.4
Type spec location:UWB
Main mass:D. Lehman
Comments:Work name DL 1081; submitted by A. Irving
Institutions
   and collections		 UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
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Geography:

Algeria
Coordinates:
     Recommended::   (26° 15' 14"N, 4° 4' 12"W)

Statistics:
     This is 1 of 187 approved meteorites from Adrar, Algeria (plus 1 unapproved name)
     This is 1 of 1270 approved meteorites from Algeria (plus 29 unapproved names) (plus 4 impact craters)
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