Formic Acid and Monmorillonite Clay in an Early Earth Environment (<10 GPa, <1000K)

Details Formic Acid and Monmorillonite Clay in an Early Earth Environment (<10 GPa, <1000K) Formic Acid and Monmorillonite Clay in an Early Earth Environment (<10 GPa, <1000K)

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmmr54a..05m&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #MR54A-05

Other

3934 Optical, Infrared, And Raman Spectroscopy, 5215 Origin Of Life, 6240 Meteorites And Tektites (1028, 3662), 9810 New Fields (Not Classifiable Under Other Headings)

Scientific paper

Ambient temperature experiments have shown that silicate minerals such as Na-montmorillonite clay ((Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O) can act as templates for the creation of ordered organic macro-molecules, a mechanism promoted for the origin of replication and chirality of prebiotic molecules. As montmorillonite clay is a weathering product of mafic and intermediate rocks, it was present early in Earth's history, along with organic material delivered by meteorites and interplanetary dust particles, and as such both materials would have been subject to high pressures and temperatures due to burial, subduction or impacts. Infrared spectroscopy of the reaction between montmorillonite and formic acid (HCOOH) in the diamond anvil cell at pressures up to 10 GPa has shown the irreversible formation of peaks not seen in either material. Larger volumes of reacted sample for quantitative analytical study can be created in the piston-cylinder press.

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