Data for High-resolution Raman spectroscopy of calcium phosphate apatite along the F-OH, F-Cl, and Cl-OH binaries
Description
Raman spectra of synthetic calcium phosphate apatite crystals. The dataset includes each of the pure end-members fluor-, chlor- and hydroxy-apatites, as well as a range of solid-solution compositions along each of the three respective binary joins between these end-members.
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Unpolarized Raman spectra were collected using a JY Horiba LabRam HR (800 mm focal-length) Raman microprobe at Virginia Tech, equipped with a 100 mW 514.57 nm Ar laser. Analyses were conducted using a 100x objective, a confocal aperture of 400 μm, a 150 μm slit width, and an 1800 lines·mm-1 grating. Spectra were collected using a single spectral window centered at 1000 cm-1. Correction for drift was achieved by simultaneously collecting an emission line of Ne (918.66 cm-1) during every apatite analysis. Each analysis comprised a 30-second dwell time over three acquisitions, averaged to the final reported spectrum. All Raman peaks were fitted using a Gaussian+Lorentzian Sum (Area) model in Peakfit v. 4.12 from SYSTAT Software Inc.
Institutions
- Virginia Polytechnic Institute and State University
- University of Vermont
- University of Alberta
- Deutsches Geoforschungszentrum Potsdam