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Zerhamra 002
Basic information Name: Zerhamra 002
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2023
Country: Algeria
Mass:help 238 g
Classification
  history:
Recommended:  CO3    [explanation]

This is 1 of 646 approved meteorites (plus 2 unapproved names) classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Approved 10 Jun 2024
Writeuphelp
Writeup from MB 113:

Zerhamra 002        29.597018, -2.8375106

Bechar, Algeria

Find: 2022 Dec 27

Classification: Carbonaceous chondrite (CO3)

History: The fragments were found by meteorite hunter M. Efenido during a search in Western Algeria and subsequently purchased by the main mass holder from a meteorite dealer in Morocco.

Physical characteristics: Many black fragments partly to completely covered with fusion crust.

Petrography: (A .Greshake, MNB, H. Bates, A. King, NHM, and E. Bonato, DLR) The meteorite is predominantly composed of abundant small chondrules (mean diameter of about 170 µm), CAIs, and mineral fragments, most of which are surrounded by fine-grained rims, set into a fine-grained dark grayish to black matrix. X-ray diffraction analyses of a 100 mg powder (NHM) identified olivine, pyroxene, FeS, abundant magnetite, and some metal and did not reveal the presence of any hydrous phases.

Geochemistry: Oxygen isotopic composition (J. Gattacceca, C. Sonzogni, D. Au Yang, CEREGE) from analysis of one acid-washed 2.65 mg aliquot of a powdered 80 mg bulk sample is δ17O=-6.047, δ18O=-2.354, Δ17O=-4.823 (slope 0.52, analytical uncertainties 0.115, 0.062, 0.005 respectively, all values in permil).

Classification: Carbonaceous chondrite (CO3, magnetite-rich)

Data from:
  MB113
  Table 0
  Line 0:
State/Prov/County:Bechar
Place of purchase:Morocco
Date:2022 Dec 27
Latitude:29.597018
Longitude:-2.8375106
Mass (g):238
Pieces:many
Class:CO3
Shock stage:S1
Weathering grade:low
Fayalite (mol%):14.4±11.3 (0.7-39.6, n=15)
Ferrosilite (mol%):1.3±0.2 (1.1-1.7, n=12)
Wollastonite (mol%):0.9±0.1 (0.9-1.0, n=12)
Classifier:A. Greshake, MNB
Type spec mass (g):21.8
Type spec location:MNB
Main mass:Philippe Schmitt-Kopplin
Comments:Submitted by Ansgar Greshake
Plots: O isotopes:  
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 10 Jun 2023)
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
Catalogs:
References: Published in Meteoritical Bulletin, no. 113, in preparation (2024)
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Geography:

Algeria
Coordinates:
     Recommended::   (29° 35' 49"N, 2° 50' 15"W)

Statistics:
     This is 1 of 37 approved meteorites from Bechar, Algeria (plus 1 unapproved name)
     This is 1 of 1368 approved meteorites from Algeria (plus 31 unapproved names) (plus 4 impact craters)
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