Pierre Haenecour

Assistant Professor

Pierre grew up in Brussels (Belgium) and graduated with B.A. and M.S. degrees in Geology and Geochemistry from the Free University of Brussels. He then moved to St. Louis (Missouri) and obtained a M.A. degree and a Ph.D. in Earth and Planetary Sciences from Washington University in St. Louis. His background is in geochemistry and cosmochemistry, from terrestrial samples (e.g., Pb and Zn isotopes in Archean komatiitic lava flows) to primitive extraterrestrial samples (e.g., meteorites and micrometeorites), using a variety of analytical techniques (e.g., multi-collector inductively coupled plasma mass spectrometry and secondary ion mass spectrometry, Auger and Raman spectroscopy, and electron microscopy). As an Assistant Professor at LPL, his research interests focus on the identification and coordinated micro-analytical study of circumstellar (presolar) grains and organics in primitive planetary materials, such as meteorites, micrometeorites and interplanetary dust particles.


  • Ph.D., 2016 Washington University in St. Louis
  • M.S., 2012 Washington University in St. Louis
  • B.S. & M.S. Free University of Brussels (Belgium)
  1. Zega T. J., Haenecour P., Floss, C. An in-situ investigation of several circumstellar oxide and silicate grains in carbonaceous chondrites. Meteoritics & Planetary Sciences, in press. https://doi.org/10.1111/maps.13418
  2. Leitner J., Metzler K., Vollmer C., Floss C., Haenecour P., Kodolanyi J., Harries D., Hoppe P. The Presolar Grain Inventory of the Mighei-type (CM) Chondrites. Meteoritics & Planetary Sciences, in press. https://doi.org/10.1111/maps.13412
  3. Bernal J. J., Haenecour P., Howe J. Y., Zega T. J., Amari S., Amari S., Ziurys L. M. (2019). Formation of Interstellar C60 from Silicon Carbide Circumstellar GrainsThe Astrophysical Journal Letters 883, 2, L43, 6 pp. 10.3847/2041-8213/ab4206
  4. Haenecour P., Howe J. Y., Zega T. J., Amari S., Lodders K., José J., Kaji K., Sunaoshi T., and Atsushi M. (2019). Laboratory identification of co-condensed O- and C-rich meteoritic stardust grains from nova outburstsNature Astronomy 3, 626-630. https://doi.org/10.1038/s41550-019-0757-4
  5. Haenecour P., Floss C., Zega T.J., Croat K. T., Jolliff B.L and Carpenter P. (2018). Presolar Silicates in the Matrix and Fine-grained Rims Around Chondrules in Primitive CO3.0 Chondrites: Evidence for Pre-Accretionary Aqueous Alteration of the Rims in the Solar Nebula. Geochimica Cosmochimica Acta 221, pp. 379-405.  https://doi.org/10.1016/j.gca.2017.06.004
  6. Haenecour P., Floss C., José J., Amari S., Lodders K., Wang A., Jadhav M., Gyngard F. (2016). Coordinated Analysis of Two Graphite Grains from the CO3.0 LAP 031117 Meteorite: First Identification of a CO Nova Graphite and a Presolar Iron Sulfide Subgrain. The Astrophysical Journal 825, 88. https://doi.org/10.3847/0004-637X/825/2/88
  7. Floss C. & Haenecour P. (2016). Presolar Silicate Grains: Abundances, Isotopic and Elemental Compositions, and the Effects of Secondary Processing. The Geochemical Journal 50, pp. 3-25. https://doi.org/10.2343/geochemj.2.0377
  8. Zega T. J., Haenecour P., Floss C., Stroud R. M. (2015). Circumstellar magnetite from the LAP 031117 CO3.0 chondrite. The Astrophysical Journal 808, 55. https://doi.org/10.1088/0004-637X/808/1/55
  9. Siegel C., Arndt N.T., Barnes S.J., Henriot, A-L., Haenecour P., Debaille V., Mattielli N. (2014). Fred's Flow (Canada) and Murphy Well (Australia): thick komatiitic lava flows with contrasting compositions, emplacement mechanisms and water contents. Contributions to Mineralogy and Petrology 168, pp. 1084. https://doi.org/10.1007/s00410-014-1084-5
  10. Haenecour P., Zhao X., Floss C., Lin Y. and Zinner E. (2013). First laboratory observation of silica grains from core-collapse supernovae. The Astrophysical Journal Letters 768, L17. https://doi.org/10.1088/2041-8205/768/1/L17
  11. Debaille V., O’Neill C., Brandon A. D., Haenecour P., Yin Q-Z., Mattielli N., and Treiman A. H. (2013). Stagnant-lid tectonics in early earth revealed by 142Nd variations in late Archean rocks. Earth and Planetary Science Letters 373, pp. 83-92. https://doi.org/10.1016/j.epsl.2013.04.016