Rocky Cometary Particulates: Their Elemental, Isotopic and Mineralogical Ingredients

  title={Rocky Cometary Particulates: Their Elemental, Isotopic and Mineralogical Ingredients},
  author={Elmar K. Jessberger},
  journal={Space Science Reviews},
The determination of the chemical composition of solid cometary dust particles was one of the prime objectives of the three missions to Comet Halley in 1986. The dust analysis was performed by time-of-flight mass-spectrometry. Within the experimental uncertainty the mean abundances of the rock-forming elements in cometary dust particles are comparable to their abundances in CI-chondrites and in the solar photosphere, i.e. they are cosmic. H, C, and N, on the other hand, in cometary dust are… 
On the Organic Refractory Component of Cometary Dust
Cometary nuclei consist of ices intermixed with dust grains and are thought to be the least modified solar system bodies remaining from the time of planetary formation. Flyby missions to Comet
Cometary dust: the diversity of primitive refractory grains
  • D. Wooden, H. Ishii, M. Zolensky
  • Physics, Geology
    Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2017
The properties of refractory materials imply there were disc processes that resulted in different comets having particular selections of primitive materials, which has implications for the diversity of materials in the protoplanetary disc present at the time and in the region where the comets formed.
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Infrared spectra of dust in cometary comae provide a way to identify its silicate constituents, and this is crucial for correctly understanding the condition under which our planetary system is
The Mineralogy of Cometary Dust
Cometary dust is a heterogeneous mixture of unequilibrated olivine and pyroxenes, amorphous silicates, Fe-Ni sulfides, and minor amounts of oxides and other minerals. While forsterite Mg2SiO4 and
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The average properties of interstellar dust have previously been inferred from remote astronomical observations of interstellar extinction and from gas depletion measurements. In addition to recent
Composition and Mineralogy of Cometary Dust
1091. Lunar and Planetary Institute, Houston (CDROM). Flynn G. J., Keller L. P., Jacobsen C., Wirick S. and Miller M. A. (2000) Interplanetary dust particles as a source of pre-biotic organic matter
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Properties of Interplanetary Dust: Information from Collected Samples
The properties of hundreds of interplanetary particles have been determined by direct laboratory analysis of recovered samples. The particles that span the 1 μm to 1 mm size range have been collected


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Re-evaluation of the chemistry of dust grains in the coma of comet Halley
THE bulk chemical composition of the dust grains in the coma of comet Halley has been determined1–11 by examination of data from the PUMA 1 and 2 and PIA mass spectrometers on the Vega and Giotto
Chemical Properties of Cometary Dust and A Note on Carbon Isotopes
On board the space probes Giotto and VEGAs and 2, which were sent through the coma of comet Halley, were the mass spectrometers PIA and PUMAs 1 and 2 for the in situ analysis of cometary dust. This
The elemental abundances in interplanetary dust particles
— We compiled a table of all major, minor, and trace-element abundances in 89 interplanetary dust particles (IDPs) that includes data obtained with proton-induced x-ray emission (PIXE), synchroton
Compositional trends in rock-forming elements of comet Halley dust.
Comprehensive study of data and consideration of the mass of dust particles reveal cometary grains of "unusual" composition: magnesium-rich and iron-rich particles.
The link between cometary and interstellar dust
From spectral observations, both interstellar and cometary dust appear to contain silicates, amorphous carbon, hydrocarbons and mantles comprised of complex organic matter (e.g. Tielens and
Carbon in Comet Halley dust particles
Comets are small bodies of the solar system containing primarily a mixture of frozen gases and carbonaceous and mineral grains. They are likely to preserve volatile mineral from cold regions of the
The present discussion of recent studies concerning cometary composition gives attention to the results obtained by in situ measurements of Comet Halley's dust composition by Vega 1's impact mass
Interstellar Grains in Primitive Meteorites: Diamond, Silicon Carbide, and Graphite
Primitive meteorites contain a few parts per million (ppm) of pristine interstellar grains that provide information on nuclear and chemical processes in stars. Their interstellar origin is proven by