Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermal Alteration of Labile Elements in Carbonaceous Chondrites   Carbonaceous chondrite meteorites are some of the oldest Solar System
planetary materials available for study. The CI group has bulk abundances of
elements similar to those of the solar photosphere. Of particular interest in
carbonaceous chondrite compositions are labile elements, which vaporize and
mobilize efficiently during post-accretionary parent-body heating events. Thus,
they can record low-temperature alteration events throughout asteroid
evolution. However, the precise nature of labile-element mobilization in
planetary materials is unknown. Here we characterize the thermally induced
movements of the labile elements S, As, Se, Te, Cd, Sb, and Hg in carbonaceous
chondrites by conducting experimental simulations of volatile-element
mobilization during thermal metamorphism. This process results in appreciable
loss of some elements at temperatures as low as 500 K. This work builds on
previous laboratory heating experiments on primitive meteorites and shows the
sensitivity of chondrite compositions to excursions in temperature. Elements
such as S and Hg have the most active response to temperature across different
meteorite groups. Labile element mobilization in primitive meteorites is
essential for quantifying elemental fractionation that occurred on asteroids
early in Solar System history. This work is relevant to maintaining a pristine
sample from asteroid (101955) Bennu from the OSIRIS-REx mission and
constraining the past orbital history of Bennu. Additionally, we discuss
thermal effects on surface processes of near-Earth asteroids, including the
thermal history of "rock comets" such as (3200) Phaethon. This work is also
critical for constraining the concentrations of contaminants in vaporized water
extracted from asteroid regolith as part of future in situ resource utilization
for sustained robotic and human space exploration.

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The categories of this paper are: supr-con
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph
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The categories of this paper are: q-alg
2
The categories of this paper are: math