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Jikharra 001
Basic information Name: Jikharra 001
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2022
Country: Libya
Mass:help 2.5 t
Classification
  history:
Recommended:  Eucrite-melt breccia    [explanation]

This is 1 of 63 approved meteorites classified as Eucrite-melt breccia.   [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Comments: Approved 6 Aug 2022
Revised 24 Sep 2022: Updated mass
Writeuphelp
Writeup from MB 111:

Jikharra 001        29°58’08.2’’ N, 21°52’05.0’’ E

Ajdabiya, Libya

Purchased: 2022

Classification: HED achondrite (Eucrite, melt breccia)

History: Numerous fragments reportedly totalling at least 2.5 metric tons, and possibly more that 3 T, were recovered in Northeastern Libya. Fifty kg of it were subsequently purchased by the main mass holder from a meteorite dealer in Libya.

Physical characteristics: Many brownish fragments some of which with small patches of fusion crust.

Petrography: Achondritic melt breccia composed of several cm-sized lithic clasts set in abundant recrystallized shock melt. Lithic clasts consist of calcic plagioclase and aggregates of fine-grained, 30-70 µm sized pigeonite crystals displaying patchy compositional zoning. The melt matrix is composed of recrystallized pigeonite displaying mottled compositional zoning and fine-grained, mostly fibrous feldspar. Minor phases include silica, Ti-chromite, ilmenite, and FeS. No metallic iron has been detected.

Geochemistry: patchily zoned pigeonite: Fs50.1±1.5Wo11.6±1.7 (Fs48.1-53.4Wo6.9-13.3, FeO/MnO=27-31, n=12); calcic plagioclase: An90.2±0.7 (An88.9-91.3, n=10)

Specimens:: 83.5 g at MNB; 205 g including two polished thin sections at UWB; 50 kg with M. Cimala; 63.36 kg with WangZ, 350 kg with M. Lyon, 845.8 kg with DPitt; (including a single 215 kg specimen), ~150 kg with Ali Benamar; 1000 kg with an anonymous Chinese collector.

Data from:
  MB111
  Table 0
  Line 0:
State/Prov/County:Ajdabiya
Place of purchase:Libya
Date:P 2022
Latitude:29°58'08.2'' N
Longitude:21°52'05.0'' E
Mass (g):2500000
Pieces:many
Class:Eucrite-melt breccia
Shock stage:high
Weathering grade:moderate
Ferrosilite (mol%):50.1
Wollastonite (mol%):11.6
Classifier:A. Greshake, MNB
Type spec mass (g):289
Type spec location:83.5 g MNB, 205 g UWB
Main mass:M. Cimala, WangZ, M. Lyon, DPitt, A. Benamar
Comments:Submitted by Ansgar Greshake
Institutions
   and collections
MNB: Museum für Naturkunde, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated 24 Dec 2011)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; Website (private address)
WangZ: Ziyao Wang, Hebei GEO University North Campus, Huai An dong road 127, Shijiazhuang, Hebei Province , China (private address; updated 25 Jun 2021)
Catalogs:
References: Published in Meteoritical Bulletin, no. 111, in preparation (2022)
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Libya
Coordinates:
     Recommended::   (29° 58' 8"N, 21° 52' 5"E)

Statistics:
     This is 1 of 14 approved meteorites from Ajdabiya, Libya (plus 1 unapproved name)
     This is 1 of 1531 approved meteorites from Libya (plus 23 unapproved names) (plus 2 impact craters)
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