Amber is a fossilized plant resin, predominantly from coniferous trees, that has undergone polymerization and oxidation over millions of years to form a stable, amorphous solid. Chemically, it consists mainly of complex mixtures of labdane-type diterpenoid and triterpenoid compounds, including succinic acid in Baltic amber (succinite). It is characterized by low density, electrical insulating properties, and a glass transition behavior rather than a true melting point. Amber’s macromolecular network structure and inclusion-trapping capacity make it valuable in paleobiology, while its well-defined spectroscopic signatures (e.g., FTIR, Raman) are used to distinguish provenance and diagenetic history.
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