|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 16 approved meteorites classified as C2-ung. [show all]
Search for other: Carbonaceous chondrites (type 2), Ungrouped chondrites, and Carbonaceous chondrites
|Comments:||Revised 27 Jul 2013: New specimen info added|
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).
Writeup from MB 102:
New information about Tagish Lake specimens:
The majority of the ~1 kg of the material collected by Jim Brook, which was used for classification, now resides at ROM (200 g) and UAb (643 g); the majority of the additional specimens collected between April 20 and May 8 are held by UCalg (contact A. Hildebrand) and UWO (contact P. Brown).
JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013)
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
ROM: Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario M5S 2C6, Canada (institutional address; updated 18 Oct 2011)
UCalg: University of Calgary, Calgary, Alberta T2N 1N4, Canada (institutional address; updated 27 Feb 2011)
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
UWO: Department of Earth Sciences, University of Western Ontario, 1151 Richmond St., London, Ontario, Canada N6A 5B7, Canada (institutional address; updated 4 Sep 2012)
UAb: 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada, Canada; Website (institutional address; updated 17 Oct 2011)
|References:||Published in Meteoritical Bulletin, no. 84, MAPS 35, A199-A225 (2000)|
Published in Meteoritical Bulletin, no. 102, in preparation (2013)
This is 1 of 3 approved meteorites from British Columbia, Canada (plus 2 unapproved names)
This is 1 of 62 approved meteorites from Canada (plus 5 unapproved names) (plus 31 impact craters)
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