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Dar al Gani 983 | |||||||||||||||||||
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Basic information | Name: Dar al Gani 983 This is an OFFICIAL meteorite name. Abbreviation: DaG 983 Observed fall: No Year found: 2002 Country: Libya Mass: 933 g | ||||||||||||||||||
Classification history: |
This is 1 of 408 approved meteorites classified as Eucrite-pmict. [show all] Search for other: Achondrites, Eucrites, and HED achondrites | ||||||||||||||||||
Writeup |
Writeup from MB 87:
Dar al Gani 983 Libya Found 2002 March 23 Achondrite (eucrite, polymict) A single stone of 933 g, partially covered with a shiny black fusion crust, was found on the Dar al Gani plateau during a German-Libyan expedition by J. Schlüter, F. Thiedig, L. Schultz and Abd Elfatah M. Abu Agreb. Mineralogy and classification (J. Schlüter, Hamburg). The cut stone shows a bright grey surface with strong brecciation with open cracks and some melt veins with vesicles. Cracks and vesicles occasionally contain white aggregates of gypsum microcrystals. The meteorite consists of mineral and lithic clasts set in a fine-grained fragmental matrix. Clasts include: 1) megacrysts of pigeonite, Fs37.9Wo4.4 (range Fs31.1–51.1; Wo1.5–7.2), and plagioclase An94.8 (range An92.7–95.4) up to 10 mm in size; 2) equigranular, pigeonite, and plagioclase-bearing cumulate eucrite; pigeonite, Fs54.6Wo3.1 (range Fs48.5– 56.7; Wo1.5–9.8), with augitic (Fs25.0Wo40.9)) exsolution lamellae up to 7 micrometers wide and maskelinitized plagioclase, An93.6 (range An88.7–96.4) are present in equal proportions; 3) dark, recrystallized impact melt with a spinifex-like texture consisting mainly of pigeonite, Fs55.3Wo2.13 (range Fs54.1–56.4; Wo1.6–3.1) and plagioclase, An84.3 (An75.5–90.6). Diogenitic components have not been found. The opaque components show only slight weathering. Accessory minerals including ilmenite, chromite and troilite have been observed. The bulk composition of the meteorite is similar to Sioux County or Juvinas. Specimens: type specimens 281 g, Hamburg, 20 g, MPI, main mass, Industrial Research Center (IRC), Tripoli, Libya | ||||||||||||||||||
Data from: MB87 Table 7 Line 56: |
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Institutions and collections |
Ham: Museum der Natur Hamburg - Mineralogie, Grindelallee 48, D-20146 Hamburg, Germany; Website (institutional address; updated 18 Jan 2024) IRC: Industrial Research Center, Tripoli, Libya (institutional address) MPI: Max-Planck-Institut für Chemie, Abteilung Kosmochemie, Postfach 3060, D-55020 Mainz, Germany; Website (institutional address; updated 7 Nov 2015) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
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Geography: |
Statistics: This is 1 of 1046 approved meteorites from Al Jufrah, Libya This is 1 of 1553 approved meteorites from Libya (plus 24 unapproved names) (plus 2 impact craters) | ||||||||||||||||||
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Revision history: |
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