Experimental constraints on heating and cooling rates of refractory inclusions in the early solar system

Details Experimental constraints on heating and cooling rates of refractory inclusions in the early solar system Experimental constraints on heating and cooling rates of refractory inclusions in the early solar system

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987eprs.nasaq....b&link_type=abstract

In NASA, Lyndon B. Johnson Space Center, Experiments in Planetary and Related Sciences and the Space Station 1 p (SEE N89-14998

Computer Science

Carbonaceous Chondrites, Cooling, Heating, Inclusions, Space Station Payloads, Spaceborne Experiments, Nucleation, Refractory Metals, Solar System, Space Commercialization, Vaporizing

Scientific paper

The refractory inclusions in carbonaceous chondrites were the subject of considerable interest since their discovery. These inclusions contain minerals that are predicted to be some of the earliest condensates from the solar nebula, and contain a plethora of isotopic anomalies of unknown origin. Of particular interest are those coarse-grained inclusions that contain refractory metal particles (Fe, Ni, Pt, Ru, Os Ir). Experimental studies of these inclusions in terrestrial laboratories are, however, complicated because the dense particles tend to settle out of a molten or partially molten silicate material. Heating experiments in the Space Station technology and microgravity in order to observe the effects of metal nuggets (which may act as heterogeneous nucleation sites) on nucleation rates in silicate systems and to measure simultaneously the relative volatilization rate of siderophile and lithophile species. Neither experiment is possible in the terrestrial environment.

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