AMBER FROM THE DOMINICAN REPUBLIC: ANALYSIS BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY

The carbon-13 NMR spectra of amber from several mining sites in the Dominican Republic show considerable variation. In certain cases the differences are sufficiently distinct to serve as a reliable indicator of provenance. The gradations within the resonances of unsaturated carbons may reflect the relative ages of the samples, because fossilization and diagenesis can remove this functionality.