Thuathe (H4/5)


Country: Lesotho
State/District: Thuathe Plateau
Date of fall/find: Fell 2002, July 21 1349 GMT
Total known weight: 45.3 kg
Number of pieces: 1029
Type: Stone. Ordinary chondrite, brecciated, light/dark structure
Shock stage: S2/3

Meteoritical Bulletin record: Click here


A meteorite travelling E to W exploded over Lesotho producing an elliptical strewn field extending 7.4 x 1.9 km (bearing: ~276°) on the W-most lobe of the Thuathe (or Berea) Plateau, ~12 km E of the capital city of Maseru (approx. strewn field apex coordinates: (W) 29°19'31"S, 27°34'37"E; (E) 29°19'54"S, 27°39'19"E; (N) 29°19'11"S, 27°37'2"E; (S) 29°20'14"S, 27°36'54"E); the explosion was accompanied by an extraordinarily loud, 15s long noise which was heard over a large (100 km radius) area of Lesotho; the fall was eye-witnessed by several people who reported sightings of dust trails of "sparkling objects" over Lesotho and the southern part of the Free State Province of South Africa; many villagers of Ha Ralimo, Boqate Ha Majara and Boqate Ha Sofonia reported falls of stones close to themselves and onto their homes; the estimated total mass of recovered material is ~30kg, including 418 stones in the 2g to 2.4kg mass range for a total of 24.673kg which were collected and catalogued by A.Ashworth and David P.Ambrose (National Univ. of Lesotho), one stone of 1.020kg held by Dr. Molisana Molisana (National University of Lesotho), 5 stones acquired by the National Museum of Lesotho in Maseru, some were collected by the Geology Department, Free State University, Bloemfontein, and several others purchased by members of the public; mineralogy and classification (W.U.Reimold, Univ. Witwatersrand; P.C.Buchanan, NIPR): most freshly cut slices from several stones show a homogeneous beige to light-grey lithology speckled with abundant and heterogeneously distributed (20% to >50 vol.%) metal particles; some cross-cut by dark shock veinlets showing brecciated structure with light grey matrix surrounding lighter coloured, well-rounded inclusions; chondrules distinctly recognizable; olivine Fa17.4±0.8; shock stage S2/3, S.S.Russell et al., Met. Bull. 87, MAPS, 2003, 38, No. 7 (Suppl.), p.A189. Description, mineralogy, W.U.Reimold et al., MAPS, 2003, 38, No. 7 (Suppl.), p.A15 (abs.). Detailed description and classification: fall and recovery circumstances, strewnfield, stone statistics, mineral chemistry, bulk chemistry, shock stage, oxygen isotopes, noble gases, cosmogenic radionuclides, W.U.Reimold et al., MAPS, 2004, 39, p.1321.



ID#: 4673
Description: Two sides cut and polished fragment with crust
Size: 7.3 x 3.2 x 2 cm
Weight: 45.9 gr

US$ 230.00

 

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