Physics
Scientific paper
Jan 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996gecoa..60..305j&link_type=abstract
Geochimica et Cosmochimica Acta, Volume 60, Issue 2, p. 305-314.
Physics
5
Scientific paper
Natural hematite 001 surfaces, exposed by fracturing large specular samples, were characterized using a number of spectroscopic, microscopic, and diffraction methods: X-ray Photoelectron Spectroscopy (XPS), Scanning Force Microscopy (SFM), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), and Low-Energy Electron Diffraction (LEED). It was found that the 001 fracture surface represents a terminated growth face, which in all cases is contaminated with adventitious material and/or secondary phases. The contamination is due to air and aqueous solution infiltration along grain boundaries. Exposure experiments, designed to test the stability of hematite surfaces with respect to hydrated phases (particularly goethite), were conducted under N2, air, humid air, and deionized water for up to three months. Hematite was found to be relatively inert in these exposure experiments, with the exception of the accumulation of adventitious carbon and oxygen. In no instance was goethite observed to form at the expense of hematite, even on the top few monolayers of the sample.
Hochella Michael F.
Junta-Rosso Jodi L.
No associations
LandOfFree
The chemistry of hematite 001 surfaces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The chemistry of hematite 001 surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The chemistry of hematite 001 surfaces will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-970735