The fall, recovery, orbit, and composition of the Tagish Lake meteorite: Anew type of carbonaceous chondrite

Authors
Brown, PG Hildebrand, AR Zolensky, ME Grady, M Clayton, RN Mayeda, TK Tagliaferri, E Spalding, R MacRae, ND Hoffman, EL Mittlefehldt, DW Wacker, JF Bird, JA Campbell, MD Carpenter, R Gingerich, H Glatiotis, M Greiner, E Mazur, MJ McCausland, PJA Plotkin, H Mazur, TR
Citation
Pg. Brown et al., The fall, recovery, orbit, and composition of the Tagish Lake meteorite: Anew type of carbonaceous chondrite, SCIENCE, 290(5490), 2000, pp. 320-325
Citations number
30
Categorie Soggetti
Multidisciplinary,Multidisciplinary,Multidisciplinary
Journal title
SCIENCE
ISSN journal
00368075 → ACNP
Volume
290
Issue
5490
Year of publication
2000
Pages
320 - 325
Database
ISI
SICI code
0036-8075(20001013)290:5490<320:TFROAC>2.0.ZU;2-N
Abstract
The preatmospheric mass of the Tagish Lake meteoroid was about 200,000 kilo grams. Its calculated orbit indicates affinity to the Apollo asteroids with a semimajor axis in the middle of the asteroid belt, consistent with a lin kage to low-albedo C, D, and P type asteroids. The mineralogy, oxygen isoto pe, and bulk chemical composition of recovered samples of the Tagish Lake m eteorite are intermediate between CM and Cl meteorites. These data suggest that the Tagish Lake meteorite may be one of the most primitive solar syste m materials yet studied.