TrekGEO > Mineral Trail > Occurrence > Amber

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Biological Process

Required Geological Setting

Neogene and Quaternary sediments, Paleogene and older sediments


Amber, a kind of fossil of resins associated with coal. As amber is subjected to enough diagenesis in sediments older than Neogene, it contains large amount of succinic acid. Copal is easily weathered in the air to be clouded or powdered. Amber is observed on the coal of tree trunks and branches, and also in the same stratigraphic horizons of coal. Amber also drifts with the wave at seashores near outcrops producing it.

Mineral Assemblages

Amber, Coal


  • Choshi (Amber)
  • Kuji (Amber)

Related Occurrences

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