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| Werdama | |||||||||||||||||||||||||||||||
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| Basic information | Name: Werdama This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: Yes Year fell: 2006 Country: Libya Mass:  4 kg | ||||||||||||||||||||||||||||||
| Classification history: |
This is 1 of 11568 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
| Comments: | Approved 17 Apr 2008 | ||||||||||||||||||||||||||||||
| Writeup |
Writeup from MB 94:
Werdama 32° 47.839’N, 21° 47.228’E Werdama village, Al-Beda, Al-Jabal Al-Akhdar, Libya Fall: 21 May 2006, 7:30 a.m. local time (UT+2) Ordinary chondrite (H5) History (M. Abu Anbar, TantaU; R. Kryza, UTWroc, T. Przylibski, WTWroc, and G. El Bahariya, TantaU): A bombing sound and cloud of dust was observed in the village during the infall on an apple farm. A crater of 30 × 20 cm and ~10 cm deep. No exact information about the meteorite finder. (probably, the owner of the apple farm). Geologist Mohamed Abu Anbar, TantaU got a few pieces for research from the finder during his visit to the site, shortly after the fall. Physical characteristics: Reportedly, five pieces were found, with estimated total mass about 4–5 kg. The diameter of the stone was about 25 cm and it had a light gray color, a brown to black fusion crust ~1 mm thick. Petrography: (R. Kryza, UWroc; T. Przylibski, UTWroc) The stone shows a low degree of shock: locally, opaque minerals are fractured and the cracks rarely continue into the neighboring silicates. The matrix (10 vol%) has a fine, inequigranular texture. The main component is olivine, subordinate low-Ca pyroxene and Ca pyroxene. Secondary feldspar grains, 20–90 μm large, are minor. Occasionally apatite is found. Opaque minerals vary between 2 and 15 vol%. Kamacite dominates over taenite, together = 6-8 vol%. Troilite and chromite are also common. The grain sizes of the opaques are 0.01-1.5 mm. Chondrules constitute 60 vol%, with a size range of 0.23-1.86 mm (mean 0.57 mm, standard deviation = 0.33). Geochemistry: Olivine (Fo79.7, Fa19.7); pyroxene (Wo1.3En81.0Fs17.7); feldspar (Ab82.8An11.8Or5.4): kamacite (Ni 6.1–9.4 wt%); taenite (Ni = 27.4–51.8 wt%). Classification: Ordinary chondrite (H5), S1, W0. Type specimens: Main mass of 2 kg (20 cm in length) and 300 g are deposited in GMAlBeda Geological Museum, and 250 g in PDAlBeda; 2 g and four thin sections are deposited in UWroc.
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| Data from: MB94 Table 1 Line 8: |
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| Institutions and collections |
GMAIBeda: Geological Museum, Omar El-Mokhtar University, Al Beda, Libya (institutional address) PDAlBeda: Physics Department, Omar El-Mokhtar University, Al Beda, Libya (institutional address) TantaU: Tanta University, Faculty of Science, 31527 Tanta, Egypt (institutional address) UTWroc: Wroclaw University of Technology, Faculty of Geoengineering Mining and Geology, Institute of Minings, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland (institutional address) |
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| Catalogs: |
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| References: | Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
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Geography:
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Statistics: This is the only approved meteorite from Al Jabal al Akhdar, 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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