Electrical conductivity of carbonaceous chondrites and electric heating of meteorite parent bodies

Details Electrical conductivity of carbonaceous chondrites and electric heating of meteorite parent bodies Electrical conductivity of carbonaceous chondrites and electric heating of meteorite parent bodies

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sspe.nasa.....d&link_type=abstract

In NASA. Lyndon B. Johnson Space Center Space Station Planetology Experiments (SSPEX) 2 p (SEE N86-27136 17-88)

Physics

Allende Meteorite, Electrical Resistivity, Equipment Specifications, Murchison Meteorite, Pyrolysis, Space Stations, Spaceborne Experiments, Carbon, Grain Boundaries, Olivine, Oxidation, Precipitation (Chemistry), Temperature Effects

Scientific paper

The electrical conductivity of samples of the Murchison and Allende carbonaceous chondrites is 4 to 6 magnitudes greater than rock forming minerals such as Olivine up to 700 C. The remarkably high electrical conductivity of these meteorites is attributed to carbon at grain boundaries. The environment in the wake of the space station can be exploited to produce conditions which will allow pyrolysis of carbonaceous chondrites. An experimental package consisting of a one square meter shield attached to a 15 cm diameter by 40 cm long furnace and tied to a conductance bridge, furnace controller, and digital voltmeter inside the space station via umbilical cable could make the required measurements. Since heating rates as low as 0.1 C/hour are required to study kinetics of the pyrolysis reations which are the cause of the high conductivity of the carbonaceous chondrites, experimental times up to 3 months will be needed.

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