|Basic information||Name: Tagish Lake|
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 2000
Mass: 10 kg
This is 1 of 14 approved meteorites classified as C2-ung. [show all]
Search for other: Carbonaceous chondrites (type 2), Ungrouped chondrites, and Carbonaceous chondrites
Writeup from MB 84:
British Columbia , Canada
Fell 2000 January 18, 08:43:42 pst (16:43:42 ut )
Carbonaceous chondrite (C2, ungrouped)
A brilliant fireball followed by loud detonations was widely observed over the Yukon Territory and northern British Columbia. The fireball was also detected by satellites in Earth orbit. Dust clouds from terminal fragmentation events were widely observed. Jim Brook recovered several dozen meteorites totaling ~ 1 kg on the ice of Taku Arm, Tagish Lake, on January 25 and 26 (coordinates of first find given above). Between April 20 and May 8, ~ 500 additional specimens were located on the ice of Taku Arm and a small, unnamed lake 1.5 km to the east, but only ~ 200 were retrieved as many had melted down into the ice making their collection time consuming; recovery was prioritized based on meteorites' mass and degree of disaggregation. The total mass collected was between 5 and 10 kg. The strewnfield is at least 16 × 3 km, oriented approximately S30° E. Classification and mineralogy (M. Zolensky, JSC; M. Grady, NHM): possibly CI2 group; a matrix-dominated chondrite, with a few small chondrules, CAIs, and isolated grains; matrix mainly phyllosilicates, Fe-Ni sulfides and magnetite, with abundant Ca-Mg-Fe carbonates; olivine, Fa0–29, PMD = 2%, with a peak at Fa1; pyroxene, Fs1–7, PMD = 2%, with a peak at Fs2; bulk C content 5.4 wt%, with δ13C = +24.3‰; shock stage, S1. Oxygen isotopes (R. Clayton, UChi): δ18O = +18.0 to 19.0‰, δ17O = 8.3 to 9.2‰. Specimens: majority held by UCalg (contact A. Hildebrand) and UWO (contact P. Brown).
JSC: Johnson Space Center, Houston, TX 77058, USA (institutional address)
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK (institutional address)
UCalg: University of Calgary, Calgary, Alberta T2N 1N4, Canada (institutional address)
UChi: University of Chicago, Chicago, IL 60637, USA (institutional address)
UWO: University of Western Ontario, London, Ontario N6A 3KT, Canada (institutional address)
|References:||Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)|
This is 1 of 3 approved meteorites from British Columbia, Canada (plus 2 unapproved names)
This is 1 of 61 approved meteorites from Canada (plus 5 unapproved names) (plus 30 impact craters)
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