Jikharra 001 EUCRITA, merger gap - 175.9 g - (1)

Jikharra 001
Basic information Name: Jikharra 001.
This is the official name of a meteorite.
Abbreviation: There is no official abbreviation for this meteorite.
Drop observed: No.
Year of discovery: 2022.
Country: Libya.
Mass: help 2.5 tons.
Classification history

Meteorite Bulletin: MB 111 (2023) Melted eucrite breccia
Fused eucrite breach [explanation]

This is one of 156 approved meteorites classified as eucrite fusion breccia. [show all]
Search for others: Acondrites, Eucrites, and HED Acondrites.
Comments: Approved on August 6, 2022.
Reviewed on September 24, 2022: Updated mass.
Writing help
Summary of MB 111
Jikharra 001 29°58'08.2'' N, 21°52'05.0'' E

Ajdabiya, Libya

Purchased: 2022

Classification: Acondrite HED (Eucrite, fusion breccia)

History: Numerous fragments totaling at least 2.5 metric tons, and possibly more than 3 tons, were reported in northeastern Libya. Fifty kilograms were later acquired by the main mass carrier from a meteorite dealer in Libya.

Physical characteristics: Many brown fragments, some of which have small patches of fused crust.

Petrography: An acondritic melt breccia composed of several centimeters-sized lithic clasts embedded in abundant recrystallized shock melt. The lithic clasts consist of calcic plagioclase and aggregates of fine-grained pigeonite crystals, ranging from 30 to 70 µm in size, exhibiting irregular compositional zoning. The melt matrix is made up of recrystallized pigeonite with mottled compositional zoning and fine-grained feldspar, mainly fibrous. Minor phases include silica, Ti-chromite, ilmenite, and FeS. Metallic iron has not been detected.

Geochemistry: pigeonita divided into zones: Fs 50.1±1.5, Wo 11.6±1.7 (Fs 48.1-53.4, Wo 6.9-13.3, FeO/MnO=27-31, n=12); calcic plagioclase: An 90.2±0.7 (An 88.9-91.3, n=10).

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

Data of:
MB111
Table 0
Line 0:
State/Province/County: Ajdabiya
Purchase location: Libya
Date: P 2022
Latitude: 29°58'08.2'' N
Longitude: 21°52'05.0'' E
Mass (g): 2,500,000
Pieces: many
Class: Melted eucrite breccia
Shock stage: high
Degree of weathering: moderate
Ferrosilite (mol%): 50.1
Wollastonite (mol%): 11.6
Classifier: A. Greshake, MNB
Mass type specification (g): 289
Location of the type specification: 83.5 g of MNB, 205 g of UWB.
Main members: M. Cimala, WangZ, M. Lyon, D. Pitt, A. Benamar
Comments: Sent by Ansgar Greshake
Institutions
and collections UWB: University of Washington, Burke Museum of Natural History and Culture, P.O. Box 353010, Seattle, WA 98195, United States (institutional address; updated October 9, 2023)
MNB: Museum of Natural History, Invalidenstraße 43, D-10115 Berlin, Germany (institutional address; updated December 24, 2011)
DPitt: Darryl Pitt, 225 West 83rd Street, New York, NY 10024, United States; website (private address)
WangZ: Ziyao Wang, Campus Norte of Hebei GEO University, Huai An East Road 127, Shijiazhuang, Hebei Province, China (private address; updated June 25, 2021)
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