The pre-atmospheric mass of the Tagish Lake meteoroid was about 2Y105 kg. Its calculated orbit indicates affinity to the Apollo asteroids with a semi-major axis in the middle of the asteroid belt, consistent with a linkage to low-albedo C, D, and P type asteroids. The mineralogy, oxygen isotope and bulk chemical composition of recovered samples of the Tagish Lake meteorite are intermediate between CM and CI meteorites. These data suggest that the Tagish Lake meteorite may be one of the most primitive solar system materials yet studied.
Revised: October 20, 2000 |
Published: October 13, 2000
Citation
Wacker J.F. 2000.The Fall, Recovery, Orbit and Composition of the Tagish Lake Meteorite : A new type of Carbonaceous Chondrite.Science 290, no. 5490:320-325.PNNL-SA-33691.