Tagish Lake – 0.040g

$70.00

1 in stock

Category:

Description

C2 chondrite

Fragment – 0.040g – 95% crusted
Sold in a collection box with label/certificate of authenticity.59°42’16’’N, 134°12’5’’W


Canada
Fell january 18, 2000
C2 ungrouped carbonaceous chondrite
Total mass : about 10 kg
Specimens in collection > 6.3 g
The Tagish Lake C2 (ungrouped) carbonaceous chondrite fall
of January 18, 2000, delivered about 10 kg of one of the most
primitive and physically weak meteorites yet studied. In this
paper, we report the detailed circumstances of the fall and
the recovery of all documented Tagish Lake fragments from
a strewnfield at least 16 km long and 3 to 4 km wide. Nearly
1 kg of “pristine” meteorites were collected one week after the
fall before new snow covered the strewnfield; the majority of the
recovered mass was collected during the spring melt. Ground
eyewitnesses and a variety of instrument-recorded observations
of the Tagish Lake fireball provide a refined estimate of the
fireball trajectory. From its calculated orbit and its similarity to
the remotely sensed properties of the D- and P-class asteroids, the
Tagish Lake carbonaceous chondrite apparently represents these
outer belt asteroids. The cosmogenic nuclide results and modeled
production indicate a prefall radius of 2.1–2.4 m (corresponding
to 60–90 tons) consistent with the observed fireball energy release.