DISTINGUISHING AMBER AND COPAL CLASSES BY PROTON MAGNETIC RESONANCE SPECTROSCOPY

Joseph B. Lambert · Charlie Tsai · Anna E. Hurtley · Jorge A. Santiago‐Blay

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Cultural Heritage Materials Analysis Mineralogy and Gemology Studies Spectroscopy and Chemometric Analyses

Abstract

Fossilized resin, or amber, has been examined from 120 worldwide sources by 1D and 2D proton magnetic resonance spectroscopy in solution. These spectra fall into five categories, corresponding to the classes already established by mass spectrometry and carbon‐13 magnetic resonance spectroscopy. The wide availability of this technique provides a straightforward method to classify amber rapidly and inexpensively.

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References

1986Spectroscopic Investigations of Amber 1985AMBER FROM THE DOMINICAN REPUBLIC: ANALYSIS BY NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2008RECONSTRUCTING ANCIENT YEMENI COMMERCIAL ROUTES DURING THE MIDDLE AGES USING STRUCTURAL CHARACTERIZATION OF TERPENOID RESINS*2002Amber: the Organic Gemstone 2008The Qatna lion: scientific confirmation of Baltic amber in late Bronze Age Syria 2005ARCHAEOLOGICAL AMBERS FROM NORTHERN ITALY: AN FTIR–DRIFT STUDY OF PROVENANCE BY COMPARISON WITH THE GEOLOGICAL AMBER DATABASE*2010Non-destructive analysis of amber artefacts from the prehistoric Cioclovina hoard (Romania)1988ANALYSIS OF EUROPEAN AMBER BY CARBON‐13 NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY

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